PLUG AS 5169629 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 8S-2269 Ridge Reamer 1 Start By:
Remove the cylinder head. Refer to Disassembly and Assembly, "Cylinder Head - Remove" for the correct procedure.
Remove the suction pipe. Refer to Disassembly and Assembly, "Engine Oil Pump - Remove" for the correct procedure.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Position the piston that is being removed in the bottom center position.
Use Tooling (A) in order to remove the carbon from the inner surface of the cylinder bore.
Illustration 1 g03340888
The connecting rod and the connecting rod cap should have an etched Number (X) on the side. The number on the connecting rod and the connecting rod cap must match. Ensure that connecting rod (4) and connecting rod cap (2) are marked for the correct location. If necessary, make a temporary mark on the connecting rod and the connecting rod cap in order to identify the cylinder number. Note: Do not stamp the connecting rod assembly.
Remove nuts (1) and remove connecting rod cap (2) from connecting rod (4). Note: Use tape or rubber tubing on the threads of the connecting rod bolts in order to protect the crankshaft journals. The sharp edges of the connecting rod bolts could damage the crankshaft journals.
Illustration 2 g03810554
Typical example
Carefully push piston (5) and the connecting rod assembly out of the cylinder bore. Lift the piston out of the top of the cylinder block. Note: Make an identification mark underneath the piston on the pin boss in order to identify the position on the piston for installation. Always mark the front pin boss.
Keep connecting rod bearings (3) with the respective connecting rod (4) and cap (2).
Repeat Step 1 through Step 6 in order to remove the remaining pistons and connecting rods.