K 1500 Truck 4WD V8-5.7L VIN R (1997)
10.9. Apply a liberal coating of clean engine oil to the bearing surface.
10.10. Reinstall crankshaft bearing cap, bolts and studs to the engine block, making sure that the caps, bolts, and studs retain their original
position and orientation.
Tighten
Tighten the crankshaft bearing cap bolts and studs on the first pass to 20 N.m (15 lb ft).
10.11. Thrust the crankshaft rearward in order to set and align the crankshaft thrust bearings and the crankshaft bearing caps.
10.12. Thrust the crankshaft forward in order to align the rear faces of the crankshaft thrust bearings.
Tighten
Tighten the crankshaft bearing cap bolts on the final pass to 73 degrees using the J 36660-A.
10.13. Go to Step 12 Crankshaft (main) Bearing Service for Locations Number 2, 3, and 4.
11.
0.0030 in. or greater
11.1. Retain upper bearing shell (number 5 main bearing - production 0.001 in. undersized).
11.2. Remove number 5 lower main bearing shell from the cap and discard.
11.3. Install 0.004 in. undersize bearing insert (P/N 12561191) in the number 5 cap, LOWER HALF ONLY.
11.4. Apply a liberal coating of clean engine oil to the bearing surface, reinstall crankshaft bearing cap, bolts and studs to the engine block,
making sure that the caps, bolts, and studs retain their original position and orientation.
Tighten
11.4.1. Tighten the crankshaft bearing cap bolts and studs on the first pass to 20 N.m (15 lb ft).
11.4.2. Tighten the crankshaft bearing cap bolts on the final pass to 73 degrees using the J 36660-A.
11.5. Remove the screw jack used for crankshaft support.
11.6. Go to Step 12 Crankshaft (main) Bearing Service for Locations Number 2, 3, and 4.
12.
Crankshaft (main) Bearing Service for Locations Number 2, 3, and 4
Important:
Do not remove the number 1 (front) main bearing cap.
12.1. Mark and remove the bearing caps from crankshaft bearings number 2, 3, and 4.
12.2. Install new bearing inserts PIN 10120990 (standard size - lower inserts only) to the numbers 2, 3, and 4 crankshaft bearing caps.
Important:
Bearing caps must be installed in the proper location and orientation or engine damage could result.
12.3. Apply a liberal coating of clean engine oil to the bearing surface, and reinstall the bearing cap and bolts.
Tighten
12.3.1. Tighten the bearing cap bolts on the first pass to 20 N.m (15 lb ft).
12.3.2. Final Pass (two bolt main bearing caps) - Tighten the bearing cap bolts on the final pass to 73 degrees using the J 36660-A.
12.3.3. Final Pass (four bolt main bearing caps) - Tighten the crankshaft bearing cap OUTBOARD bolts and studs to 43 degrees using the J
36660-A.
12.3.4. Final Pass (four bolt main bearing caps) - Tighten the crankshaft bearing cap INNER bolts and studs to 73 degrees using the J
36660-A.
