Crankshaft - Installation

INSTALLATION - CRANKSHAFT

CRANKSHAFT MAIN BEARING LOCATION


The crankshaft is supported in five main bearings. All upper bearing shells in the crankcase have oil grooves and holes. All bearing shells have oil grooves and holes(Figure 1). Crankshaft end play is controlled by a flanged bearing on the number three main bearing journal.





Figure 1 MAIN BEARING ID






1. Install the main bearing upper shells with the lubrication groove and oil hole in the engine block (Figure 2).




Figure 2 Installing Main Bearing Upper Shell






2. 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.

3. 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.

4. Install NEW mounting screws finger tight starting with the #1 location. (Figure 3) Make sure engagement occurs with the shoulder of the screw and mounting hole before starting all other screws.
5. Torque all mounting screws with T30 torx bit to 13 Nm (110 in-lbs) following the torque sequence.




Figure 3 Target Ring Torque Sequence


CAUTION: Use extreme care when handling crankshaft. Tone wheel damage can occur if crankshaft is mis-handled.

CAUTION: Do not get oil on the bed plate mating surface. It will affect the ability of the sealer to seal the bed plate to cylinder block.

6. Oil the bearings and journals. Install crankshaft in the engine block.

CAUTION: Use only Mopar(R) Bed Plate Sealant on the bed plate or damage may occur to the engine.

7. Install lower main bearings into main bearing cap/bed plate. Make certain the bearing tabs are seated into the bed plate slots and apply oil.
8. Apply 1.5 to 2.0 mm (0.059 to 0.078 in.) bead of Mopar(R) Bed Plate Sealant to bed plate as shown in (Figure 4).




Figure 4 Bed Plate Sealing

9. Install the main bearing/bed plate into engine block.
10. Before installing the bolts the threads should be oiled with clean engine oil, wipe off any excess oil.
11. Install main bearing bed plate to engine block bolts 11, 17, and 20 finger tight. Tighten these bolts down together until the bed plate contacts the cylinder block.




Figure 5 Main Bearing Caps/Bed Plate Bolt Torque Sequence

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 (NOT BED PLATE) and the rear crankshaft counterweight. This will hold the crankshaft in it's furthest forward position.
- Step 5: Install and tighten bolts (1-10) in sequence shown in (Figure 5) to 41 Nm (30 ft. lbs.).
- Step 6: Remove wedge tool used to hold crankshaft.
13. Tighten bolts (1-10) again to 41 Nm (30 ft. lbs.) in sequence shown in (Figure 5).

CAUTION: Do Not use a torque wrench for the following step.

14. Turn bolts (1-10) an additional 1/4 turn in sequence shown in (Figure 5).
15. Install main bearing bed plate to engine block bolts (11-20), and torque each bolt to 28 Nm (250 in. lbs.) in sequence shown in. (Figure 5)
16. Tighten bolts (11-20) again to 28 Nm (250 in. lbs.) in sequence shown in (Figure 5).
17. After the main bearing bed plate is installed, check the crankshaft turning torque. The turning torque should not exceed 5.6 Nm (50 in. lbs.).
18. Check crankshaft end play.
19. Install connecting rod bearings and caps. Do Not Reuse Connecting Rod Bolts. Torque connecting rod bolts to 27 Nm (20 ft. lbs.) plus 1/4 turn.
20. Install balance shafts and housing assembly.
21. Install the oil pump.
22. Install oil pump pick-up tube. Torque fastener to 28 Nm (20 ft. lbs.).
23. Install the oil pan.
24. Install crankshaft position sensor.
25. Install cylinder head if it was removed.
26. Install the timing belt rear cover.
27. Install crankshaft sprocket.
28. Install the timing belt.
29. Install the timing belt front covers.
30. Install engine mount support bracket.
31. Install NEW oil filter.
32. Install crankshaft rear oil seal.
33. Install flex plate. Apply Mopar(R) Lock & Seal Adhesive to bolt threads and tighten to 95 Nm (70 ft. lbs.).
34. Attach transaxle to engine. Tighten attaching bolts to 101 Nm (75 ft. lbs.).
35. Install the engine assembly.