Crankshaft - Installation
INSTALLATION
The crankshaft is supported in five main bearings. All upper bearing shells (2) in the crankcase have oil grooves and holes. All lower bearing shells (1) are smooth. Crankshaft end play is controlled by a two piece thrust bearing (3) on the number three main bearing journal.
1. Clean main bearing cap bolt holes with Mopar(R) brake parts cleaner or equivalent and blow out with compressed air.
2. Install the main bearing upper (2) shells with the lubrication groove and oil hole in the engine block.
3. Make certain oil holes in block line up with oil hole in bearings and bearing tabs seat in the block tab slots.
NOTE: If the crankshaft is sent out for machine work, it must be balanced as an assembly with the target ring installed.
4. Clean crankshaft and target ring with MOPAR(R) Brake Parts cleaner and dry with compressed air to ensure that the crankshaft mating surface and target ring mounting holes are free from oil and lock patch debris.
NOTE: Always use NEW mounting screws whether installing original or new target ring.
5. Install NEW mounting screws finger tight starting with the #1 location. Make sure engagement occurs with the shoulder of the screws and mounting hole before starting all other screws.
6. Tighten all mounting screws with T30 torx bit to 13 Nm (110 in-lbs) in the sequence shown.
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.
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. To ensure correct thrust bearing alignment, perform the following steps:
- Step 1: Rotate crankshaft until number 4 piston is at TDC.
- Step 2: Move crankshaft rearward to limits of travel.
- Step 3: Then, move crankshaft forward to limits of travel.
- 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.
13. Tighten bolts (1 - 10) to 27 Nm + 45� (20 ft. lbs. + 45�) in the sequence shown above.
14. Remove wedge tool used to hold crankshaft.
15. Check the crankshaft turning torque, it should not exceed 5.6 Nm (50 in. lbs.).
16. Check crankshaft end play.
17. Install connecting rod bearings and caps. Do Not Reuse Connecting Rod Bolts. Tighten connecting rod bolts to 20 Nm + 90� (15 ft. lbs.) + 90�.
18. Install the ladder frame assembly.
19. Install the balance shaft module.
20. Install crankshaft position sensor (2) and tighten bolt (1).
21. Install cylinder head if it was removed.
22. Install front crankshaft sprocket (1).
23. Install the timing chain.
24. Install the timing chain front cover.
25. Install the oil pan.
26. Install rear crankshaft oil seal.
27. Install front crankshaft oil seal.
28. Install engine mount support bracket (1).
29. Install crankshaft vibration damper (2).
30. Install water pump pulley (3).
31. Remove engine from repair stand and position on dolly 6135 (8) and engine support cradle 6710 (2, 11). Install safety straps (5, 9) around the engine to cradle and tighten and lock them into position.
32. Install crankshaft rear oil seal.
33. Install drive plate/flex plate using new bolts. Tighten bolts to 95 Nm (70 ft. lbs.).
34. Attach transaxle to engine. Tighten bellhousing bolts to 101 Nm (75 ft. lbs.).
35. Install the engine assembly.
36. Install new oil filter (1) and fill with oil.
37. Fill with coolant.
38. Start engine and check for leaks.
39. Install engine cover.