Kubota Tractors
BX23S, LA340, BT603
Service Manual & Owner's Manual
YEAR: 2017 & Up
After Purchase A link will be sent to your eBay message to Download.
Note: PDF File not printed Material
Kubota service manual WSM Workshop Manual
Kubota owners' ops manual
Contents Below
INFORMATION
SAFETY FIRST
Safety first
Before you start service
Start safely
Operate safely
Protect against high pressure spray
Avoid hot exhaust
Exhaust filter cleaning
Prevent a fire
Keep a good airflow in the work area
Discard fluids correctly
Prevent acid burns
Prepare for emergencies
SAFETY LABEL
Safety labels for BX tractor
Safety labels for mower
Safety labels for loader
Safety labels for backhoe
SPECIFICATIONS
BX tractor specifications
Mower specifications
Bucket specifications
Dimensional specifications of loader
Operational specifications of loader
Backhoe dimensions
Backhoe lift capacity
TRAVELING SPEEDS
DIMENSIONS
GENERAL
IDENTIFICATION
Tractor identification
Checking serial number and hour meter
Cylinder number
Checking mower identification
Checking loader identification
Checking backhoe identification
GENERAL PRECAUTIONS
HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING
LUBRICANTS, FUEL AND COOLANT
BX tractor
Lubricants, fuel, and coolant
Fuel
Engine oil
Transmission oil
Overview of biodiesel fuel (BDF)
Mower
Lubricants
TIGHTENING TORQUES
General use screws, bolts and nuts
Stud bolts
Metric screws, bolts and nuts
American standard screws, bolts and nuts with UNC or UNF threads
Plugs
Adapters, elbows and others
MAINTENANCE CHECK LIST
BX tractor service intervals
Mower service intervals
CHECK AND MAINTENANCE
Periodic service
Opening bonnet
Daily check
Walk around inspection
Checking fuel gauge and refueling
Checking engine oil level
Checking transmission fluid level
Checking coolant level
Cleaning panel and radiator screen
Checking brake pedal
Checking gauges, meters, and Easy Checker™
Checking head light, hazard light, and tail light
Checking seat belt and ROPS
Checking and cleaning electrical wiring and battery cables
Checking movable parts
Check points of initial hours
Changing engine oil
Replacing engine oil filter
Replacing transmission oil filter
Changing transmission fluid
Cleaning transmission strainer
Check points of every hours
Greasing
Checking engine start system
Checking operator presence control (OPC) system
Checking wheel bolt torque
Cleaning lock lever shaft
Check points of every hours
Checking battery condition
Cleaning air cleaner element
Checking fuel filter
Adjusting fan belt tension
Adjusting HST neutral spring
Adjusting brake pedal
Check point of every hours
Replacing engine oil filter
Changing engine oil
Replacing transmission oil filter
Adjusting toe in
Check points of every hours
Adjusting front axle pivot
Changing transmission fluid
Cleaning transmission strainer
Changing front axle case oil
Replacing fuel filter element
Check points of every hours
Adjusting engine valve clearance
Check points of every hours or year
Replacing air cleaner element
Check points of every hours
Checking injection pressure of fuel injection nozzle
Check points of every hours or years
Flushing cooling system and changing coolant
Antifreeze
Check points of every hours
Checking injection pump
Check points of every year
Checking intake air line
Checking radiator hoses and hose clamps
Checking power steering line
Checking fuel lines
Checking engine breather hose
Check points of every years
Replacing radiator hose
Replacing fuel hose
Replacing power steering hose
Replacing intake air line
Replacing engine breather hose
Service as required
Bleeding fuel system
Replacing fuse
Replacing light bulb
Mower
Check points of daily or each use
Re tightening mower blade screw
Checking mower blade
Checking mower belt
Checking gear box oil level
Greasing spindle shafts, belt tension pivot and tension pulley
Greasing front and rear antiscalp rollers
Greasing universal joint
Check points of initial hours
Changing gear box oil
Check point of every hours
Changing gear box oil
Check points of every year
Checking gear box oil seal
Check point of every years
Replacing gear box oil seal
Front loader
Check points of daily or each use
Checking transmission fluid level
Checking hydraulic hoses
Check points of every hours
Greasing loader
Check points of every hours
Checking torque of main frame bolt and nut
Backhoe
Check points of daily or each use
Checking transmission fluid level
Checking hydraulic hoses
Checking backhoe mounting pin
Check points of every hours
Greasing backhoe
Check points of every hours
Checking torque sub frame bolt and nut
TIRES, WHEELS, AND BALLAST
Tires
Inflation pressure of tires
Dual tires
Wheel tread
Front wheels
Rear wheels
Ballast
Front ballast
Rear ballast
IMPLEMENT LIMITATIONS
Implement limitation tables
SPECIAL TOOLS
Special tools for engine
Special use puller set
Diesel engine compression tester (for injection nozzle)
Nozzle tester
Injection pump pressure tester
Valve guide replacing tool
Bushing replacing tool
Flywheel stopper
Crankshaft bearing replacing tool
Special tools for tractor
Tierod end lifter
Independent PTO clutch spring compression tool
Disassembling and assembling stand (/)
Disassembling and assembling stand (/)
Check and high pressure relief valve assembly tool
ENGINE
MECHANISM
Engine body
Function of cylinder block
Function of closed breather
Function of halffloating head cover
Function of piston
Function of piston ring
Function of connecting rod
Function of crankshaft
Function of camshaft
Function of rocker arm
Function of flywheel
Function of timing gears
Lubricating system
Overview of lubricating system
Function of oil strainer
Function of oil pump
Function of oil filter
Function of relief valve
Function of oil pressure switch
Cooling system
Overview of cooling system
Function of water pump
Function of radiator
Function of radiator cap
Fuel system
Overview of fuel system
Function of fuel filter
Function of fuel feed pump
Function of injection nozzle
SERVICING
Troubleshooting for engine
Servicing specifications for engine
Tightening torques for engine
Checking and adjusting
Engine body
Checking compression pressure
Checking valve clearance
Lubricating system
Checking engine oil pressure
Cooling system
Checking fan belt tension
Checking fan belt damage and wear
Checking radiator cap air leakage
Checking radiator water leakage
Checking thermostat valve opening temperature
Fuel system
Checking injection timing
Checking fuel tightness of pump element
Checking fuel tightness of delivery valve
Checking nozzle spraying condition
Checking fuel injection pressure
Checking valve seat tightness
Checking nozzle holder
Disassembling and assembling
Separating engine
Draining engine oil
Removing battery
Removing bonnet
Disconnecting wiring harness and ground cables
Disconnecting fuel hoses
Disconnecting accelerator wire
Disconnecting propeller shaft assembly
Separating engine
Draining coolant and removing outer engine parts
Disassembling the engine
Cylinder head and valve
Gear case and timing gears
Piston and connecting rod
Flywheel and crankshaft
Servicing
Cylinder head and valve
Checking top clearance
Checking cylinder head surface flatness
Checking cylinder head flaw
Checking valve recessing
Checking clearance between valve stem and valve guide
Replacing valve guide
Checking valve seating
Correcting valve
Correcting valve seat
Lapping valve
Checking free length and tilt of valve spring
Checking valve spring setting load
Checking oil clearance between rocker arm and rocker arm shaft
Checking push rod alignment
Checking oil clearance between tappet and tappet guide bore
Timing gears, camshaft and governor gear
Checking timing gear backlash
Checking idle gear side clearance
Checking camshaft side clearance
Checking camshaft alignment
Checking cam height
Checking oil clearance of camshaft journal
Checking oil clearance between idle gear shaft and idle gear bushing
Replacing idle gear bushing
Piston and connecting rod
Checking piston pin bore ID
Checking oil clearance between piston pin and small end bushing
Replacing small end bushing
Checking connecting rod alignment
Checking piston ring gap
Checking clearance between piston ring and piston ring groove
Crankshaft
Checking crankshaft side clearance
Checking crankshaft alignment
Checking oil clearance between crankpin and crankpin bearing
Checking oil clearance between crankshaft journal and crankshaft bearing
Replacing crankshaft bearing
Checking oil clearance between crankshaft journal and crankshaft bearing and crankshaft bearing
Cylinder
Checking cylinder wear
Correcting cylinder (Oversize)
Oil pump
Checking rotor lobe clearance
Checking clearance between outer rotor and pump body
Checking clearance between rotor and cover
Relief valve spring
Checking relief valve
TRANSAXLE
MECHANISM
Structure of transaxle
Traveling system
Hydrostatic transmission
Structure of hydrostatic transmission
Oil flow of hydrostatic transmission
Structure of HST control linkage
Speed set linkage
Range gear shift section
Structure of range gear shift
Front wheel drive section
Structure of front wheel drive
Differential gear section
Structure of differential gears
Structure of differential lock
Brake section
Structure of brake system
PTO system
Structure of PTO system
Function of PTO clutch relief valve
Engaged function of PTO clutch
Disengaged function of PTO clutch
Structure of mid and rear PTO
Others
Hydraulic pump drive gear section
Structure of hydraulic pump drive gear
SERVICING
Troubleshooting for transaxle
Servicing specifications for transaxle
Tightening torques for transaxle
Checking and adjusting
Adjusting maximum speed
Adjusting HST neutral position
Checking and adjusting HST neutral spring (dynamic braking)
Checking charge relief pressure
Checking high relief pressure (Forward)
Checking high relief pressure (Reverse)
Readjusting relief valve (When HST does not work due to its loose hexagon socket head screw)
Checking PTO clutch operating pressure
Adjusting brake pedal free travel
Disassembling and assembling
Separating transaxle
Draining transmission fluid
Removing battery
Removing lift rod and lower link
Removing ROPS
Removing seat
Removing step
Removing fender
Removing fuel tank
Removing rear wheel
Removing fender center stay
Removing fender bracket and hitch plate
Removing transaxle assembly
Removing brake pedal
Removing propeller shaft
Removing differential lock pedal
Removing speed control pedal, HST damper, and cruise rod
Hydrostatic transmission
Removing levers and mower lift arm
Removing PTO clutch valve
Removing oil cooler cover
Removing center section and valve plates
Removing check and high pressure relief valve plug
Checking check and high pressure relief valve
Removing cylinder block
Removing cylinder block and piston
Removing swashplate and trust roller bearing
Removing WD detent ball
Removing neutral arm and trunnion arm
Hydraulic cylinder
Removing hydraulic cylinder
Transaxle shafts
Removing transaxle case front cover
Removing hydraulic pump assembly
Removing rear PTO cover assembly
Disassembling rear axle (LH)
Removing rear axle case (RH)
Removing T final gear
Removing rear axle case, RH and brake
Removing PTO clutch assembly
Assembling shafts
Assembling select arms and HST pump shaft (PTO clutch shaft)
Assembling front wheel drive shaft, shifter, spiral bevel pinion shaft and midPTO shaft
Servicing
Hydrostatic transmission
Checking center section
Checking charge relief valve
Checking check and high pressure relief valve
Checking cylinder block assembly
Checking thrust washer, thrust roller bearing, thrust plate and cradle bearing
Checking pump shaft (PTO clutch shaft)
Checking needle bearing
Transaxle case
Checking bearing
Checking PTO clutch disc wear
Checking separate plate and back plate wear
Checking flatness of clutch piston, pressure plate and steel plate
Checking clutch spring free length
Checking PTO brake disc wear
Checking PTO brake plate
Checking clearance between differential case and differential side gear
Checking clearance between differential pinion shaft and differential pinion
Checking backlash between differential pinion and differential side gear
Checking backlash between spiral bevel pinion gear and bevel gear
Checking brake cam lever movement
Checking flatness of actuator and bearing holder
Checking height of cam plate and ball
Checking brake disc and friction plate wear
FRONT AXLE
MECHANISM
Structure of front axle
Front wheel alignment
Camber of front axle
Kingpin angle of front axle
Caster of front axle
Toein of front axle
SERVICING
Troubleshooting for front axle
Servicing specifications for front axle
Tightening torques for front axle
Checking and adjusting
Adjusting toein
Adjusting front axle rocking force
Adjusting front wheel steering angle
Disassembling and assembling
Separating front axle assembly
Draining front axle case oil
Removing battery
Removing bonnet
Removing front wheel and propeller shaft cover
Disconnecting propeller shaft
Removing front axle assembly
Front axle assembly
Removing power steering cylinder
Removing bevel gear case and front gear case
Removing front gear case cover
Removing T bevel gear and front axle shaft
Removing front gear case and bevel gear case
Removing bevel pinion shaft and differential gear assembly
Removing differential gear
Servicing
Checking clearance between differential case and differential side gear
Checking clearance between differential pinion shaft and differential pinion
Checking backlash between differential pinion and differential side gear
Checking turning torque of bevel pinion shaft
Checking backlash between bevel pinion shaft and bevel gear
Checking backlash between T bevel gear and T bevel gear
Checking clearance between center pin and pin support bushing
STEERING
MECHANISM
Structure of steering system
Hydraulic circuit of steering
Steering controller
Structure of steering controller
Control valve
Metering device
Relief valve
Steering cylinder
Structure of steering cylinder
SERVICING
Troubleshooting for steering
Servicing specifications for steering
Tightening torques for steering
Checking and adjusting
Checking relief valve operating pressure
Disassembling and assembling
Power steering cylinder
Removing adapter and tierod
Disassembling steering cylinder
Separating power steering controller
Removing battery
Removing steering wheel
Removing upper panel
Removing steering controller
Separating power steering cylinder
Removing bonnet
Removing front axle assembly
Removing power steering cylinder
Servicing
Checking steering cylinder ID
Checking clearance between rod and guide
HYDRAULIC SYSTEM
MECHANISM
Structure of hydraulic system
Hydraulic circuit
Hydraulic pump
Outline of hydraulic pump
Structure of hydraulic pump
Specification of hydraulic pump
Control valve
Outline of control valve
Function of control valve
Control valve in neutral position
Control valve in lift position
Control valve in down position
Flow priority valve
Outline of flow priority valve
Structure of flow priority valve
Specification of flow priority valve
Relief valve
Outline of relief valve
Structure of relief valve
Function of relief valve
Specification of relief valve
Hydraulic cylinder
Structure of hydraulic cylinder
Hydraulic block type outlet
Structure of hydraulic block type outlet
Mower linkage
Structure of mower linkage
Front loader valve
Structure
Structure of front loader valve and pipe
Structure of front loader control valve
Front loader hydraulic circuit
Function of loader control valve
Loader control lever in neutral position
Loader control lever in up position
Loader control lever in down position
Loader control lever in floating position
Loader control lever in rollback position
Loader control lever in dump position
SERVICING
Troubleshooting for hydraulic system
Servicing specifications for hydraulic system
Tightening torques for hydraulic system
Checking and adjusting
Relief valve
Checking relief valve setting pressure
Pump and priority valve
Checking hydraulic pump oil flow
Checking power steering oil flow
Mower lift linkage
Adjusting mower lift linkage
Disassembling and assembling
Hydraulic pump
Removing battery
Removing lift rod and lower link
Removing ROPS
Removing seat
Removing step
Removing fender
Removing fuel tank
Removing fender center stay
Removing hydraulic pump
Hydraulic cylinder block
Removing battery
Removing lift rod and lower link
Removing ROPS
Removing step
Removing fender
Removing fuel tank
Removing fender center stay
Removing mower linkage and wire harness
Removing hydraulic cylinder block
Hydraulic cylinder and control valve
Removing control valve
Removing control valve lever
Removing lift arm, hydraulic arm shaft and hydraulic arm
Removing hydraulic piston
Removing lowering speed adjusting valve
Mower lift linkage
Disassembling mower linkage
Control valve (Front loader)
Removing battery
Removing ROPS
Removing seat
Removing step
Removing fender
Removing control valve
Disassembling control valve
Servicing
Hydraulic pump
Checking clearance between tip of gear tooth and casing
Checking clearance between bushing and shaft
Checking side plate thickness
Hydraulic cylinder
Checking hydraulic cylinder bore
Checking hydraulic arm shaft bushing
ELECTRICAL SYSTEM
MECHANISM
Wiring diagram of BX tractor
Electrical connector chart
Reading electrical circuit diagrams
How to read wiring diagram
Layout of connector diagrams
Precautions on handling electrical connectors
Starting system
Electrical circuit of starting system
Function of relay
Function of starter
Function of glow plug
Function of safety switch
Function of fuel pump
OPC (Operator Presence Control) system
Electrical circuit of OPC timer
Charging system
Electrical circuit for charging system
Function of IC regulator (P connector type)
Lighting system
Electrical circuit for lighting system
Gauges
Electrical circuit of gauge system
Meter panel
Function of hour meter
Function of tachometer
Function of fuel gauge
Function of coolant temperature gauge
Function of fuel level sensor
Function of coolant temperature sensor
Function of oil pressure switch
Others
Electrical circuit for accessory
Function of DC outlet
SERVICING
Troubleshooting for electrical system
Servicing specifications for electrical system
Tightening torques for electrical system
Checking and adjusting
Battery
Checking battery voltage
Checking battery terminal connection
Checking battery specific gravity
Main switch
Checking main switch connector voltage
Checking main switch continuity at off position
Checking main switch continuity at on position
Checking main switch continuity at preheat position
Checking main switch continuity at start position
Starter
Checking motor
Testing starter magnet switch (pullin, holding coils)
Glow plug
Checking glow plug lead terminal voltage
Checking glow plug continuity
Safety switch
Checking PTO shift lever switch continuity
Checking HST neutral switch continuity
Operator presence control (OPC) system
Checking seat switch and seat turnover switch continuity
Checking OPC timer
Fuel pump
Checking fuel pump connector voltage
Checking fuel pump continuity
Engine stop solenoid
Testing engine stop solenoid
Timer relay
Checking timer relay connector voltage
Testing timer relay
Charging system
Checking battery charging current
Combination switch
Removing combination switch
Checking combination switch connector voltage
Checking head light switch continuity when setting switch at OFF position
Checking head light switch continuity when setting switch at ON position
Checking turn signal light switch continuity when setting switch knob at OFF position
Checking turn signal light switch continuity when setting switch knob at RIGHT position
Checking turn signal light switch continuity when setting switch knob at LEFT position
Checking hazard switch continuity when setting switch knob at OFF position
Checking hazard switch continuity when setting switch knob at ON position
Checking flasher unit connector voltage
Testing flasher unit actuation
Gauge
Checking charge lamp (charging circuit)
Checking engine oil pressure lamp
Checking engine oil pressure switch continuity
Checking fuel level sensor continuity
Checking coolant temperature sensor connector voltage
Checking coolant temperature sensor continuity
Checking hour meter and tachometer
Accessory
Checking DC outlet connector voltage
Checking DC outlet continuity
Meter panel
Checking connector voltage, sensor resistance and switch
Disassembling and assembling
Starter
Disassembling starter motor
Removing magnet switch
Removing plunger
Alternator
Removing pulley
Removing rear end cover
Removing brush holder
Removing IC regulator
Removing rectifier
Removing rear end frame
Removing rotor
Removing retainer plate
Removing bearing on drive end side
Removing bearing at slip ring side
Servicing
Starter
Checking overrunning clutch
Checking commutator and mica
Checking brush wear
Checking brush holder
Checking armature coil
Checking field coil
Alternator
Checking bearing
Checking stator
Checking rotor
Checking slip ring
Checking brush wear
Checking rectifier
MOWER
MECHANISM
Structure of power transmission of mower
Structure of lifting mechanism of mower
SERVICING
Troubleshooting for mower
Servicing specifications for mower
Tightening torques for mower
Setting up mower [RCKDBX and RCKDBX]
Assembling mower
Setting mower
Mounting front link
Mounting frame link
Setting tractor
Mounting mower
Checking and adjusting
Mower adjustment
Adjusting mower link
Adjusting front and rear cutting height
Adjusting left and right cutting height
Adjusting cutting height
Checking mower blade and belt
Checking mower blade
Checking mower belt
Disassembling and assembling
Removing ramps and belt covers
Removing mower blades
Removing blade boss
Removing gear box and mower belt
Disassembling gear box
Removing center pulley holder
Removing outer pulley and blade shaft
Servicing
Adjusting turning torque of pinion shaft
Adjusting backlash between bevel gears
FRONT LOADER
MECHANISM
Hydraulic circuit
Front remote hydraulic control system (if equipped)
Operating control lever
Boom cylinder and bucket cylinder
Structure of boom cylinder and bucket cylinder
One touch front loader
Outline of one touch front loader
One lever quick touch lines coupler
Structure of one lever quick touch lines coupler
Auto lock attachment and detachment
Outline of auto lock attachment and detachment
Function of auto lock attachment and detachment
Mechanical loader frame standing mechanism
Structure of mechanical loader frame standing mechanism
rd function valve (If equipped)
Structure of rd function valve
Function of rd function valve
Activation switch in off position
Activation switch in on position
SERVICING
Troubleshooting for front loader
Tightening torques for front loader
Checking and adjusting
Loader stand
Adjusting height of loader stand
Front hydraulic valve main switch and relay
Checking front hydraulic valve main switch continuity
Checking connector voltage of front hydraulic valve main switch
Checking relay
rd function solenoid valve
Checking rd function solenoid valve continuity
Checking connector voltage of rd function solenoid valve
Disassembling and assembling
Removing loader
Reinstalling loader
Bucket, boom and hydraulic cylinders
Attaching attachments
Removing attachments
Removing bucket cylinder
Removing boom cylinder and hydraulic tubes
Removing piston rod assembly
Removing cylinder head, piston and nut
Removing piston seal and Oring
Installing Oring and piston seal
Side frames, front guard and main frames
Removing side frames
Removing front guard
Removing main frames
rd function valve (If equipped)
Removing rd function valve
Removing hydraulic tubes of rd function
Servicing
Piston rod
Checking piston rod bend
BACKHOE
MECHANISM
Hydraulic circuit
Control valve
Structure of backhoe control valve
Function of backhoe control valve
Backhoe control valve in neutral position
Backhoe control valve in swing right position
Backhoe control valve in swing left position
Backhoe control valve in boom up position
Backhoe control valve in boom down position
Backhoe control valve in LH stabilizer shrink position
Backhoe control valve in LH stabilizer extend position
Backhoe control valve in RH stabilizer shrink position
Backhoe control valve in RH stabilizer extend position
Backhoe control valve in dipperstick crowd position
Backhoe control valve in dipperstick extend position
Backhoe control valve in bucket rollback position
Backhoe control valve in bucket dump position
Structure of overload relief valve
Function of relief position
Function of anticavitation position
Structure of hydraulic cylinder
SERVICING
Troubleshooting for backhoe
Servicing specifications for backhoe
Tightening torques for backhoe
Checking and adjusting
Checking relief valve setting pressure
Checking control lever operation force
Checking stabilizer control lever operation force
Disassembling and assembling
Removing backhoe
Preparing to remove backhoe
Releasing mounting pins
Disconnecting hydraulic hoses
Removing backhoe
Installing backhoe
Preparing to install backhoe
Connecting hydraulic hoses
Setting mounting pins
Installing backhoe
Disassembling backhoe
Removing bucket
Removing dipperstick and bucket cylinder
Removing dipperstick cylinder, boom, boom cylinder, and hoses
Removing swing frame
Removing swing cylinder
Removing stabilizers and stabilizer cylinder
Removing lever support and control valve
Removing backhoe main frame
Disassembling control valve
Disassembling cylinder (Boom, dipperstick, bucket, swing, stabilizer)
Removing cylinder rod assembly
Removing cylinder head, piston, and nut
Checking cylinder adaptor angle
Removing piston seal and Oring
Installing Oring and piston seal
Servicing
Checking clearance between pin and bushing
Checking thrust washer wear
Checking piston rod bend
SAFETY FIRST
Safety first
Before you start service
Start safely
Operate safely
Protect against high pressure spray
Avoid hot exhaust
Exhaust filter cleaning
Prevent a fire
Keep a good airflow in the work area
Discard fluids correctly
Prevent acid burns
Prepare for emergencies
SAFETY LABEL
Safety labels for BX tractor
Safety labels for mower
Safety labels for loader
Safety labels for backhoe
SPECIFICATIONS
BX tractor specifications
Mower specifications
Bucket specifications
Dimensional specifications of loader
Operational specifications of loader
Backhoe dimensions
Backhoe lift capacity
TRAVELING SPEEDS
DIMENSIONS
GENERAL
IDENTIFICATION
Tractor identification
Checking serial number and hour meter
Cylinder number
Checking mower identification
Checking loader identification
Checking backhoe identification
GENERAL PRECAUTIONS
HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING
LUBRICANTS, FUEL AND COOLANT
BX tractor
Lubricants, fuel, and coolant
Fuel
Engine oil
Transmission oil
Overview of biodiesel fuel (BDF)
Mower
Lubricants
TIGHTENING TORQUES
General use screws, bolts and nuts
Stud bolts
Metric screws, bolts and nuts
American standard screws, bolts and nuts with UNC or UNF threads
Plugs
Adapters, elbows and others
MAINTENANCE CHECK LIST
BX tractor service intervals
Mower service intervals
CHECK AND MAINTENANCE
Periodic service
Opening bonnet
Daily check
Walk around inspection
Checking fuel gauge and refueling
Checking engine oil level
Checking transmission fluid level
Checking coolant level
Cleaning panel and radiator screen
Checking brake pedal
Checking gauges, meters, and Easy Checker™
Checking head light, hazard light, and tail light
Checking seat belt and ROPS
Checking and cleaning electrical wiring and battery cables
Checking movable parts
Check points of initial hours
Changing engine oil
Replacing engine oil filter
Replacing transmission oil filter
Changing transmission fluid
Cleaning transmission strainer
Check points of every hours
Greasing
Checking engine start system
Checking operator presence control (OPC) system
Checking wheel bolt torque
Cleaning lock lever shaft
Check points of every hours
Checking battery condition
Cleaning air cleaner element
Checking fuel filter
Adjusting fan belt tension
Adjusting HST neutral spring
Adjusting brake pedal
Check point of every hours
Replacing engine oil filter
Changing engine oil
Replacing transmission oil filter
Adjusting toe in
Check points of every hours
Adjusting front axle pivot
Changing transmission fluid
Cleaning transmission strainer
Changing front axle case oil
Replacing fuel filter element
Check points of every hours
Adjusting engine valve clearance
Check points of every hours or year
Replacing air cleaner element
Check points of every hours
Checking injection pressure of fuel injection nozzle
Check points of every hours or years
Flushing cooling system and changing coolant
Antifreeze
Check points of every hours
Checking injection pump
Check points of every year
Checking intake air line
Checking radiator hoses and hose clamps
Checking power steering line
Checking fuel lines
Checking engine breather hose
Check points of every years
Replacing radiator hose
Replacing fuel hose
Replacing power steering hose
Replacing intake air line
Replacing engine breather hose
Service as required
Bleeding fuel system
Replacing fuse
Replacing light bulb
Mower
Check points of daily or each use
Re tightening mower blade screw
Checking mower blade
Checking mower belt
Checking gear box oil level
Greasing spindle shafts, belt tension pivot and tension pulley
Greasing front and rear antiscalp rollers
Greasing universal joint
Check points of initial hours
Changing gear box oil
Check point of every hours
Changing gear box oil
Check points of every year
Checking gear box oil seal
Check point of every years
Replacing gear box oil seal
Front loader
Check points of daily or each use
Checking transmission fluid level
Checking hydraulic hoses
Check points of every hours
Greasing loader
Check points of every hours
Checking torque of main frame bolt and nut
Backhoe
Check points of daily or each use
Checking transmission fluid level
Checking hydraulic hoses
Checking backhoe mounting pin
Check points of every hours
Greasing backhoe
Check points of every hours
Checking torque sub frame bolt and nut
TIRES, WHEELS, AND BALLAST
Tires
Inflation pressure of tires
Dual tires
Wheel tread
Front wheels
Rear wheels
Ballast
Front ballast
Rear ballast
IMPLEMENT LIMITATIONS
Implement limitation tables
SPECIAL TOOLS
Special tools for engine
Special use puller set
Diesel engine compression tester (for injection nozzle)
Nozzle tester
Injection pump pressure tester
Valve guide replacing tool
Bushing replacing tool
Flywheel stopper
Crankshaft bearing replacing tool
Special tools for tractor
Tierod end lifter
Independent PTO clutch spring compression tool
Disassembling and assembling stand (/)
Disassembling and assembling stand (/)
Check and high pressure relief valve assembly tool
ENGINE
MECHANISM
Engine body
Function of cylinder block
Function of closed breather
Function of halffloating head cover
Function of piston
Function of piston ring
Function of connecting rod
Function of crankshaft
Function of camshaft
Function of rocker arm
Function of flywheel
Function of timing gears
Lubricating system
Overview of lubricating system
Function of oil strainer
Function of oil pump
Function of oil filter
Function of relief valve
Function of oil pressure switch
Cooling system
Overview of cooling system
Function of water pump
Function of radiator
Function of radiator cap
Fuel system
Overview of fuel system
Function of fuel filter
Function of fuel feed pump
Function of injection nozzle
SERVICING
Troubleshooting for engine
Servicing specifications for engine
Tightening torques for engine
Checking and adjusting
Engine body
Checking compression pressure
Checking valve clearance
Lubricating system
Checking engine oil pressure
Cooling system
Checking fan belt tension
Checking fan belt damage and wear
Checking radiator cap air leakage
Checking radiator water leakage
Checking thermostat valve opening temperature
Fuel system
Checking injection timing
Checking fuel tightness of pump element
Checking fuel tightness of delivery valve
Checking nozzle spraying condition
Checking fuel injection pressure
Checking valve seat tightness
Checking nozzle holder
Disassembling and assembling
Separating engine
Draining engine oil
Removing battery
Removing bonnet
Disconnecting wiring harness and ground cables
Disconnecting fuel hoses
Disconnecting accelerator wire
Disconnecting propeller shaft assembly
Separating engine
Draining coolant and removing outer engine parts
Disassembling the engine
Cylinder head and valve
Gear case and timing gears
Piston and connecting rod
Flywheel and crankshaft
Servicing
Cylinder head and valve
Checking top clearance
Checking cylinder head surface flatness
Checking cylinder head flaw
Checking valve recessing
Checking clearance between valve stem and valve guide
Replacing valve guide
Checking valve seating
Correcting valve
Correcting valve seat
Lapping valve
Checking free length and tilt of valve spring
Checking valve spring setting load
Checking oil clearance between rocker arm and rocker arm shaft
Checking push rod alignment
Checking oil clearance between tappet and tappet guide bore
Timing gears, camshaft and governor gear
Checking timing gear backlash
Checking idle gear side clearance
Checking camshaft side clearance
Checking camshaft alignment
Checking cam height
Checking oil clearance of camshaft journal
Checking oil clearance between idle gear shaft and idle gear bushing
Replacing idle gear bushing
Piston and connecting rod
Checking piston pin bore ID
Checking oil clearance between piston pin and small end bushing
Replacing small end bushing
Checking connecting rod alignment
Checking piston ring gap
Checking clearance between piston ring and piston ring groove
Crankshaft
Checking crankshaft side clearance
Checking crankshaft alignment
Checking oil clearance between crankpin and crankpin bearing
Checking oil clearance between crankshaft journal and crankshaft bearing
Replacing crankshaft bearing
Checking oil clearance between crankshaft journal and crankshaft bearing and crankshaft bearing
Cylinder
Checking cylinder wear
Correcting cylinder (Oversize)
Oil pump
Checking rotor lobe clearance
Checking clearance between outer rotor and pump body
Checking clearance between rotor and cover
Relief valve spring
Checking relief valve
TRANSAXLE
MECHANISM
Structure of transaxle
Traveling system
Hydrostatic transmission
Structure of hydrostatic transmission
Oil flow of hydrostatic transmission
Structure of HST control linkage
Speed set linkage
Range gear shift section
Structure of range gear shift
Front wheel drive section
Structure of front wheel drive
Differential gear section
Structure of differential gears
Structure of differential lock
Brake section
Structure of brake system
PTO system
Structure of PTO system
Function of PTO clutch relief valve
Engaged function of PTO clutch
Disengaged function of PTO clutch
Structure of mid and rear PTO
Others
Hydraulic pump drive gear section
Structure of hydraulic pump drive gear
SERVICING
Troubleshooting for transaxle
Servicing specifications for transaxle
Tightening torques for transaxle
Checking and adjusting
Adjusting maximum speed
Adjusting HST neutral position
Checking and adjusting HST neutral spring (dynamic braking)
Checking charge relief pressure
Checking high relief pressure (Forward)
Checking high relief pressure (Reverse)
Readjusting relief valve (When HST does not work due to its loose hexagon socket head screw)
Checking PTO clutch operating pressure
Adjusting brake pedal free travel
Disassembling and assembling
Separating transaxle
Draining transmission fluid
Removing battery
Removing lift rod and lower link
Removing ROPS
Removing seat
Removing step
Removing fender
Removing fuel tank
Removing rear wheel
Removing fender center stay
Removing fender bracket and hitch plate
Removing transaxle assembly
Removing brake pedal
Removing propeller shaft
Removing differential lock pedal
Removing speed control pedal, HST damper, and cruise rod
Hydrostatic transmission
Removing levers and mower lift arm
Removing PTO clutch valve
Removing oil cooler cover
Removing center section and valve plates
Removing check and high pressure relief valve plug
Checking check and high pressure relief valve
Removing cylinder block
Removing cylinder block and piston
Removing swashplate and trust roller bearing
Removing WD detent ball
Removing neutral arm and trunnion arm
Hydraulic cylinder
Removing hydraulic cylinder
Transaxle shafts
Removing transaxle case front cover
Removing hydraulic pump assembly
Removing rear PTO cover assembly
Disassembling rear axle (LH)
Removing rear axle case (RH)
Removing T final gear
Removing rear axle case, RH and brake
Removing PTO clutch assembly
Assembling shafts
Assembling select arms and HST pump shaft (PTO clutch shaft)
Assembling front wheel drive shaft, shifter, spiral bevel pinion shaft and midPTO shaft
Servicing
Hydrostatic transmission
Checking center section
Checking charge relief valve
Checking check and high pressure relief valve
Checking cylinder block assembly
Checking thrust washer, thrust roller bearing, thrust plate and cradle bearing
Checking pump shaft (PTO clutch shaft)
Checking needle bearing
Transaxle case
Checking bearing
Checking PTO clutch disc wear
Checking separate plate and back plate wear
Checking flatness of clutch piston, pressure plate and steel plate
Checking clutch spring free length
Checking PTO brake disc wear
Checking PTO brake plate
Checking clearance between differential case and differential side gear
Checking clearance between differential pinion shaft and differential pinion
Checking backlash between differential pinion and differential side gear
Checking backlash between spiral bevel pinion gear and bevel gear
Checking brake cam lever movement
Checking flatness of actuator and bearing holder
Checking height of cam plate and ball
Checking brake disc and friction plate wear
FRONT AXLE
MECHANISM
Structure of front axle
Front wheel alignment
Camber of front axle
Kingpin angle of front axle
Caster of front axle
Toein of front axle
SERVICING
Troubleshooting for front axle
Servicing specifications for front axle
Tightening torques for front axle
Checking and adjusting
Adjusting toein
Adjusting front axle rocking force
Adjusting front wheel steering angle
Disassembling and assembling
Separating front axle assembly
Draining front axle case oil
Removing battery
Removing bonnet
Removing front wheel and propeller shaft cover
Disconnecting propeller shaft
Removing front axle assembly
Front axle assembly
Removing power steering cylinder
Removing bevel gear case and front gear case
Removing front gear case cover
Removing T bevel gear and front axle shaft
Removing front gear case and bevel gear case
Removing bevel pinion shaft and differential gear assembly
Removing differential gear
Servicing
Checking clearance between differential case and differential side gear
Checking clearance between differential pinion shaft and differential pinion
Checking backlash between differential pinion and differential side gear
Checking turning torque of bevel pinion shaft
Checking backlash between bevel pinion shaft and bevel gear
Checking backlash between T bevel gear and T bevel gear
Checking clearance between center pin and pin support bushing
STEERING
MECHANISM
Structure of steering system
Hydraulic circuit of steering
Steering controller
Structure of steering controller
Control valve
Metering device
Relief valve
Steering cylinder
Structure of steering cylinder
SERVICING
Troubleshooting for steering
Servicing specifications for steering
Tightening torques for steering
Checking and adjusting
Checking relief valve operating pressure
Disassembling and assembling
Power steering cylinder
Removing adapter and tierod
Disassembling steering cylinder
Separating power steering controller
Removing battery
Removing steering wheel
Removing upper panel
Removing steering controller
Separating power steering cylinder
Removing bonnet
Removing front axle assembly
Removing power steering cylinder
Servicing
Checking steering cylinder ID
Checking clearance between rod and guide
HYDRAULIC SYSTEM
MECHANISM
Structure of hydraulic system
Hydraulic circuit
Hydraulic pump
Outline of hydraulic pump
Structure of hydraulic pump
Specification of hydraulic pump
Control valve
Outline of control valve
Function of control valve
Control valve in neutral position
Control valve in lift position
Control valve in down position
Flow priority valve
Outline of flow priority valve
Structure of flow priority valve
Specification of flow priority valve
Relief valve
Outline of relief valve
Structure of relief valve
Function of relief valve
Specification of relief valve
Hydraulic cylinder
Structure of hydraulic cylinder
Hydraulic block type outlet
Structure of hydraulic block type outlet
Mower linkage
Structure of mower linkage
Front loader valve
Structure
Structure of front loader valve and pipe
Structure of front loader control valve
Front loader hydraulic circuit
Function of loader control valve
Loader control lever in neutral position
Loader control lever in up position
Loader control lever in down position
Loader control lever in floating position
Loader control lever in rollback position
Loader control lever in dump position
SERVICING
Troubleshooting for hydraulic system
Servicing specifications for hydraulic system
Tightening torques for hydraulic system
Checking and adjusting
Relief valve
Checking relief valve setting pressure
Pump and priority valve
Checking hydraulic pump oil flow
Checking power steering oil flow
Mower lift linkage
Adjusting mower lift linkage
Disassembling and assembling
Hydraulic pump
Removing battery
Removing lift rod and lower link
Removing ROPS
Removing seat
Removing step
Removing fender
Removing fuel tank
Removing fender center stay
Removing hydraulic pump
Hydraulic cylinder block
Removing battery
Removing lift rod and lower link
Removing ROPS
Removing step
Removing fender
Removing fuel tank
Removing fender center stay
Removing mower linkage and wire harness
Removing hydraulic cylinder block
Hydraulic cylinder and control valve
Removing control valve
Removing control valve lever
Removing lift arm, hydraulic arm shaft and hydraulic arm
Removing hydraulic piston
Removing lowering speed adjusting valve
Mower lift linkage
Disassembling mower linkage
Control valve (Front loader)
Removing battery
Removing ROPS
Removing seat
Removing step
Removing fender
Removing control valve
Disassembling control valve
Servicing
Hydraulic pump
Checking clearance between tip of gear tooth and casing
Checking clearance between bushing and shaft
Checking side plate thickness
Hydraulic cylinder
Checking hydraulic cylinder bore
Checking hydraulic arm shaft bushing
ELECTRICAL SYSTEM
MECHANISM
Wiring diagram of BX tractor
Electrical connector chart
Reading electrical circuit diagrams
How to read wiring diagram
Layout of connector diagrams
Precautions on handling electrical connectors
Starting system
Electrical circuit of starting system
Function of relay
Function of starter
Function of glow plug
Function of safety switch
Function of fuel pump
OPC (Operator Presence Control) system
Electrical circuit of OPC timer
Charging system
Electrical circuit for charging system
Function of IC regulator (P connector type)
Lighting system
Electrical circuit for lighting system
Gauges
Electrical circuit of gauge system
Meter panel
Function of hour meter
Function of tachometer
Function of fuel gauge
Function of coolant temperature gauge
Function of fuel level sensor
Function of coolant temperature sensor
Function of oil pressure switch
Others
Electrical circuit for accessory
Function of DC outlet
SERVICING
Troubleshooting for electrical system
Servicing specifications for electrical system
Tightening torques for electrical system
Checking and adjusting
Battery
Checking battery voltage
Checking battery terminal connection
Checking battery specific gravity
Main switch
Checking main switch connector voltage
Checking main switch continuity at off position
Checking main switch continuity at on position
Checking main switch continuity at preheat position
Checking main switch continuity at start position
Starter
Checking motor
Testing starter magnet switch (pullin, holding coils)
Glow plug
Checking glow plug lead terminal voltage
Checking glow plug continuity
Safety switch
Checking PTO shift lever switch continuity
Checking HST neutral switch continuity
Operator presence control (OPC) system
Checking seat switch and seat turnover switch continuity
Checking OPC timer
Fuel pump
Checking fuel pump connector voltage
Checking fuel pump continuity
Engine stop solenoid
Testing engine stop solenoid
Timer relay
Checking timer relay connector voltage
Testing timer relay
Charging system
Checking battery charging current
Combination switch
Removing combination switch
Checking combination switch connector voltage
Checking head light switch continuity when setting switch at OFF position
Checking head light switch continuity when setting switch at ON position
Checking turn signal light switch continuity when setting switch knob at OFF position
Checking turn signal light switch continuity when setting switch knob at RIGHT position
Checking turn signal light switch continuity when setting switch knob at LEFT position
Checking hazard switch continuity when setting switch knob at OFF position
Checking hazard switch continuity when setting switch knob at ON position
Checking flasher unit connector voltage
Testing flasher unit actuation
Gauge
Checking charge lamp (charging circuit)
Checking engine oil pressure lamp
Checking engine oil pressure switch continuity
Checking fuel level sensor continuity
Checking coolant temperature sensor connector voltage
Checking coolant temperature sensor continuity
Checking hour meter and tachometer
Accessory
Checking DC outlet connector voltage
Checking DC outlet continuity
Meter panel
Checking connector voltage, sensor resistance and switch
Disassembling and assembling
Starter
Disassembling starter motor
Removing magnet switch
Removing plunger
Alternator
Removing pulley
Removing rear end cover
Removing brush holder
Removing IC regulator
Removing rectifier
Removing rear end frame
Removing rotor
Removing retainer plate
Removing bearing on drive end side
Removing bearing at slip ring side
Servicing
Starter
Checking overrunning clutch
Checking commutator and mica
Checking brush wear
Checking brush holder
Checking armature coil
Checking field coil
Alternator
Checking bearing
Checking stator
Checking rotor
Checking slip ring
Checking brush wear
Checking rectifier
MOWER
MECHANISM
Structure of power transmission of mower
Structure of lifting mechanism of mower
SERVICING
Troubleshooting for mower
Servicing specifications for mower
Tightening torques for mower
Setting up mower [RCKDBX and RCKDBX]
Assembling mower
Setting mower
Mounting front link
Mounting frame link
Setting tractor
Mounting mower
Checking and adjusting
Mower adjustment
Adjusting mower link
Adjusting front and rear cutting height
Adjusting left and right cutting height
Adjusting cutting height
Checking mower blade and belt
Checking mower blade
Checking mower belt
Disassembling and assembling
Removing ramps and belt covers
Removing mower blades
Removing blade boss
Removing gear box and mower belt
Disassembling gear box
Removing center pulley holder
Removing outer pulley and blade shaft
Servicing
Adjusting turning torque of pinion shaft
Adjusting backlash between bevel gears
FRONT LOADER
MECHANISM
Hydraulic circuit
Front remote hydraulic control system (if equipped)
Operating control lever
Boom cylinder and bucket cylinder
Structure of boom cylinder and bucket cylinder
One touch front loader
Outline of one touch front loader
One lever quick touch lines coupler
Structure of one lever quick touch lines coupler
Auto lock attachment and detachment
Outline of auto lock attachment and detachment
Function of auto lock attachment and detachment
Mechanical loader frame standing mechanism
Structure of mechanical loader frame standing mechanism
rd function valve (If equipped)
Structure of rd function valve
Function of rd function valve
Activation switch in off position
Activation switch in on position
SERVICING
Troubleshooting for front loader
Tightening torques for front loader
Checking and adjusting
Loader stand
Adjusting height of loader stand
Front hydraulic valve main switch and relay
Checking front hydraulic valve main switch continuity
Checking connector voltage of front hydraulic valve main switch
Checking relay
rd function solenoid valve
Checking rd function solenoid valve continuity
Checking connector voltage of rd function solenoid valve
Disassembling and assembling
Removing loader
Reinstalling loader
Bucket, boom and hydraulic cylinders
Attaching attachments
Removing attachments
Removing bucket cylinder
Removing boom cylinder and hydraulic tubes
Removing piston rod assembly
Removing cylinder head, piston and nut
Removing piston seal and Oring
Installing Oring and piston seal
Side frames, front guard and main frames
Removing side frames
Removing front guard
Removing main frames
rd function valve (If equipped)
Removing rd function valve
Removing hydraulic tubes of rd function
Servicing
Piston rod
Checking piston rod bend
BACKHOE
MECHANISM
Hydraulic circuit
Control valve
Structure of backhoe control valve
Function of backhoe control valve
Backhoe control valve in neutral position
Backhoe control valve in swing right position
Backhoe control valve in swing left position
Backhoe control valve in boom up position
Backhoe control valve in boom down position
Backhoe control valve in LH stabilizer shrink position
Backhoe control valve in LH stabilizer extend position
Backhoe control valve in RH stabilizer shrink position
Backhoe control valve in RH stabilizer extend position
Backhoe control valve in dipperstick crowd position
Backhoe control valve in dipperstick extend position
Backhoe control valve in bucket rollback position
Backhoe control valve in bucket dump position
Structure of overload relief valve
Function of relief position
Function of anticavitation position
Structure of hydraulic cylinder
SERVICING
Troubleshooting for backhoe
Servicing specifications for backhoe
Tightening torques for backhoe
Checking and adjusting
Checking relief valve setting pressure
Checking control lever operation force
Checking stabilizer control lever operation force
Disassembling and assembling
Removing backhoe
Preparing to remove backhoe
Releasing mounting pins
Disconnecting hydraulic hoses
Removing backhoe
Installing backhoe
Preparing to install backhoe
Connecting hydraulic hoses
Setting mounting pins
Installing backhoe
Disassembling backhoe
Removing bucket
Removing dipperstick and bucket cylinder
Removing dipperstick cylinder, boom, boom cylinder, and hoses
Removing swing frame
Removing swing cylinder
Removing stabilizers and stabilizer cylinder
Removing lever support and control valve
Removing backhoe main frame
Disassembling control valve
Disassembling cylinder (Boom, dipperstick, bucket, swing, stabilizer)
Removing cylinder rod assembly
Removing cylinder head, piston, and nut
Checking cylinder adaptor angle
Removing piston seal and Oring
Installing Oring and piston seal
Servicing
Checking clearance between pin and bushing
Checking thrust washer wear
Checking piston rod bend
After Purchase A link will be sent to your eBay message to Download.
Note: PDF File not printed Material
