Piston, Pin, and Connecting Rod Installation
WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
- Lubricate the following components with clean engine oil:
- Piston
- Piston rings
- Cylinder bore
- Bearings and bearing surfaces
- Install the bearings to the connecting rod and cap.
- Position the oil control ring end gaps a minimum of 25 mm (1.0 in) from each other.
- Position the compression ring end gaps 180 degrees opposite each other.
- Install the J 41556 guide to the connecting rod.
- Identify the proper installation direction of the piston and connecting rod assembly. When installing the piston and connecting rod assembly, the mark on the top of the piston (1) and the tab (2) on the side of the connecting rod should face the front of the engine.
- Install the J 8037 compressor onto the piston and compress the piston rings.
- Install the piston, pin, and connecting rod assembly into the cylinder bore. Hold the piston ring compressor firmly against the engine block. Using a wooden hammer handle, lightly tap the top of the piston until all piston rings have entered the cylinder bore.
- Use the J 41556 to guide the connecting rod onto the crankshaft journal.
- Remove the J 41556 from the connecting rod.
- Install the bearing cap (103), bearing (104), and bolts (102).
- Tighten the bolts a first pass to 20 N.m (15 lb ft).
- Tighten the bolts a final pass to 85 degrees using the J 45059 meter.
- Measure the connecting rods for the proper side clearance. Refer to Engine Mechanical Specifications .
NOTE:
The piston alignment mark MUST face the front of the engine block.
CAUTION:
Refer to Fastener Caution .
NOTE:
The connecting rod and cap must be assembled with the mating surfaces properly aligned.