5.4" bore 7040 Piston Ring Compressor For Cummins Isx Caterpillar (cat) 3400 C15
Item Description
 
 
Application:
 
Compatible with Cummins ISX/QSX 15, Caterpillar 3400 Series, 3406, 3408, 3412
 
Fitment:
 
Fit for CATERPILLAR 3400, C15 & CUMMINS ISX
 
Replacement:Alternative to PT-7040
 
Bore:5.4 inch bore
 
Color: Red
 
Material:Strong Cast Steel
 
Function:Provide proper piston installation, reducing the possibility of broken ring.
Features:
📦Package Content:
Strong Cast Steel
High toughness
Corrosion resistance
Durability
 1X Cummins 7040 Piston Ring
 
 
Product Details:
 
5.4" Bore
 
Superior Cast Steel
 
Design with Connecting Rod
 
Perfect in Workmanship
 
How to Use:
 
Step 1
  • Wipe the cylinder bores with a clean, lint free towel and apply a small amount of conventional (non-synthetic) oil to the walls, wrist pins and piston rings.
 
  • Use enough to lubricate the rings as they pass through the piston ring compressor.
 
  • Liberally coat the compressor with oil. No need to be dripping wet.
 
 
 
 
 
 

Step 2

Rotate the crankshaft so the rod journal for the piston you’re installing is at Top Dead Center. Place the piston/ring compressor combination over the cylinder bore. Always do the following before sliding the piston into the bore:

  • If the piston is domed, the dome should be to the outside of the block.
  • Check that the chamfer on the connecting rod (and rod bearing) is facing the fillet radius on the crankshaft.
  • Make sure the oil rings’ expander ring end gaps haven’t overlapped.
  • Cover rod bolt ends with protectors to prevent crank damage during installation.
  • Coat the connecting rod bearings with assembly lube.
Step 3
  • It’s often possible to hand-push the piston and rod assembly into the bore, guiding the rod so that it falls in place over the crankshaft rod journal.
  • Other times you will need to very light tap the assembly in with the handle end of a clean plastic hammer.
  • If you need excessive force to push the piston through the ring compressor into the bore, it usually means the oil ring expander rails are overlapped.
Step 4
 
  • Rotate the engine on the engine stand.
  • Coat the bearing in the rod cap end with assembly lube and install.
  • You can install the rod cap nuts and torque to specifications at this point, provided you’ve checked the bearing clearances.
  • Repeat this sequence on the rest of the piston/rod assemblies.
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