Crankshaft Service & Repair for Patriot 2WD L4-24L (2009)
NOTE: Lightly apply trans gel to thrust bearings to hold bearings in block.
NOTE: The thrust bearings must be installed the notches facing the crankshaft.
7. Install thrust bearings (2) in block (1).
CAUTION: Do not get oil on the ladder frame mating surface. It will affect the ability of the RTV to seal the ladder frame to cylinder block.
NOTE: Ensure main bearing cap bolt holes in the block are clean, dry (free of residual oil or coolant), and threads are not damaged.
8. Oil the bearings and journals. Install crankshaft in engine block.
9. Install lower main bearings (1) into main bearing cap. Make certain the bearing tabs are seated into the bearing cap slots.
NOTE: Main bearing caps are stamped 1 - 5 front to rear. Arrows on the caps must point towards the front of the engine.
10. Install main bearing caps to engine block.
11. Before installing the bolts the threads should be clean and dry.
12. Loosely install main bearing cap bolts.
13. To ensure correct thrust bearing alignment, perform the following steps:
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Step 1: Rotate crankshaft until number 4 piston is at TDC.
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Step 2: Move crankshaft rearward to limits of travel.
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Step 3: Then, move crankshaft forward to limits of travel.
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Step 4: Wedge an appropriate tool between the rear of the cylinder block and the rear crankshaft counterweight. This will hold the crankshaft
in its furthest forward position.
CAUTION: There are different sets main bolts supplied with this engine. Each bolt set has a different torque value and engine damage could
result if bolts are not torqued correctly. The bolts are not interchangeable.
