Vehicle 9 Teeth Starter Motor 12V For Toyota Supra JZA80 Soarer JZZ31 3.0 Lexus 81-05

Composition of automobile starter motor

A car starter is generally composed of three parts: ① DC series-excited motor; ② transmission mechanism; ③ control device (also called electromagnetic switch). The DC

series-excited motor is the power part to generate torque, including the rotor assembly, stator assembly and brush assembly. The transmission mechanism is to transmit the

power of DC series-excited motor to the flywheel gear ring through the drive gear, to complete the passive rotation of the engine, and to disengage the drive gear and

flywheel gear ring after the engine is started. The control part is used to turn on and off the circuit between the motor and the battery.

Daily inspection of car starting system

1. Battery inspection

If the starting system can't start, you should check whether the battery power is sufficient, whether the battery poles are oxidized and corroded, and whether the battery cable

connector is loose.

2. Fuse and relay check

The starting system has its own fuses and relays. If the starting system does not work properly, you should check the working status of the fuses and relays after excluding

the battery fault. The damage of the fuse can be measured with the help of a multimeter. The coil of the relay can be detected by using the ohm stop of the multimeter. By

energizing both ends of the relay coil, the closing condition of the relay contacts can be detected to be good.

Fuses and relays are frequently faulty parts of the starting system circuit, and are also easy to measure. For the improper operation of the starting system, in the spirit of the

simple to complex inspection method, you should start with fuses and relays. Of course, there are many ways to judge the relay, which can be operated by replacing,

touching and other methods, but ultimately must also rely on the multimeter to verify.

3.Checking the starter motor of the car

The components of the starter may be the fault point of the starting system, for the control device, transmission mechanism, DC series-excited motor fault judgment, the

reality of the maintenance process have rarely existed in the disassembly and overhaul, especially for the DC series-excited motor stator assembly and rotor assembly

winding overhaul, even if the disassembly and inspection found a broken circuit, short circuit, the coil winding and then re-winding, the cost of its labor time is also very high,

in the The actual maintenance process is done by replacing the parts.

4. Checking the car starter circuit

The starter is connected to the circuit so that the starter can complete its function. In the case that the battery, fuse and relay, and the starter itself are intact, the starter

system cannot work normally, the starter circuit should be checked. The inspection of the wiring focuses on the line breakage, short circuit fault, and the connection of the

line and the parts, often poor contact is the reason why it is difficult to troubleshoot.

Some facts about starter motors

The rotation is generally indicated at the front of the starter motor:

CW = Clockwise

CCW = Counter Clockwise

DD = Direct Drive. These are older and heavier models of starter motors that drive the gear wheel directly through the engine.

GR (gear reduction) = Later model starter motors with a planetary reduction. These starter motors are lighter and more compact to produce.