BOLT-HEAD 4922181 - Caterpillar

Illustration 1 g03334121
Typical example
Table 1
Specification for 375-3642 Crankshaft Gp, 379-4858 Crankshaft Gp, and 386-1487 Crankshaft Gp
Item Qty Part Specification Description
1 2 7C-6209 Thrust Plate Thrust plates should be used only on center main bearing.
2 8 2W-2288 Plug Torque to 50 7 N m (37 5 lb ft).
3 48 128-4845 Bolt As Use the following procedure to tighten the bolts:
1. Before assembly, lubricate the bolt threads, the bolt shank, the washer, and the underside of the bolt head with Molylube lubricant.
Torque outer bolts first, then torque inner bolt.
2. Tighten the bolts evenly to a torque of 200 5 N m (148 4 lb ft).
3. Loosen the bolts.
4. Again, tighten evenly to 70 5 N m (52 4 lb ft).
5. Rotate each bolt for an additional turn of 120 5 degrees.
Note: Do Not reuse counterweight bolts.
B 32 7N-2003 Dowel Protrusion (B) of the dowel is 8.0 0.5 mm (0.31 0.02 inch).
- - - After assembly into cylinder block, end play of the new crankshaft is 0.17 mm to 0.63 mm (0.007 inch to 0.025 inch).