Piston and Connecting Rod Assemble

^ Tools Required
- J 38637 Piston Pin Retaining Ring Installer

CONNECTING ROD BEARINGS





1. Clean the connecting rod and the connecting rod cap bearing bore with a lint-free cloth.
2. Clean all the oil from behind the connecting rod bearing halves.
3. Install new upper connecting rod bearings into position. Roll the bearing into position so that the lock tang engages the alignment slot. The bearing must fit flush in the connecting rod.
4. Install new lower connecting rod bearings into position in the connecting rod cap. Roll the bearing into position so that the lock tang engages the alignment slot. The bearings must fit flush with the connecting rod cap.

PISTON RINGS





1. Using a piston ring expander, install the oil control ring assembly using the following procedure:
1.1. Install the expander ring (3).
1.2. Install the two oil scraper rings (4). Expand the rings only enough to clear the piston diameter. Overexpanding the piston rings will distort or crack the rings.
2. Install the second (2) and top piston (1) rings using the piston ring expander. Make sure you do not overexpand the rings.





3. Once the rings are installed, set the ring gaps for the oil control, second and top ring at least 30° apart from each other (2,3,4).
4. Set the gap for the oil ring expander to the opposite side of the piston from the other ring gaps (1).

PISTON INSTALLATION





1. Properly orient the piston (1) on the connecting rod (2) as follows:
^ The locating mark (4) cast into the underside of the piston should point towards the front of the engine.
^ The locating notch (3) on the connecting rod cap should be pointing towards the rear of the engine on odd-numbered cylinders and towards the front of the engine on even-numbered cylinders.
2. Repeat these procedures for the remaining pistons.





3. Align the piston pin bore with the connecting rod pin bore.
4. Slide the piston pin (4) into the piston and the connecting rod (3).
5. Install new piston pin retainers (1) using the J 38637