PISTON 8J6370 - Caterpillar

Illustration 1 g03162196
Right side view
Illustration 2 g03162197
Left side view
Table 1
Specification for 149-0483 Cylinder Block Gp and 437-1491 Cylinder Block Gp
Item Qty Part Specification Description
1 25 6V-4589 O-Ring Seal Before assembly, lubricate the bore lightly with clean engine oil.
2 32 6V-3539 Dowel Protrusion (C) of the dowel is 60.0 1.0 mm (2.36 0.04 inch).
3 35 6V-3538 Dowel Protrusion (D) of the dowel is 8.0 1.0 mm (0.31 0.04 inch).
4 4 7N-2328 Dowel Protrusion (G) of the dowel is 20.0 1.0 mm (0.79 0.04 inch).
5 20 8L-2786 O-Ring Seal Before assembly, lubricate the bore lightly with clean engine oil.
6 1 3P-0651 O-Ring Seal Before assembly, lubricate the bore lightly with clean engine oil.
7 2 3P-0656 O-Ring Seal Before assembly, lubricate the bore lightly with clean engine oil.
8 16 175-5060 Sleeve Install the sleeve with the marked "TOP" toward up.
Illustration 3 g03162198
Table 2
Item Qty Part Specification Description
L - - Bore in cylinder block for main bearing is 265.00 0.02 mm (10.433 0.001 inch).
M - - The distance from the centerline of the crankshaft bearing bore to the top of the cylinder block is 946.0 mm (37.24 inch).
N - - The distance from the centerline of the crankshaft bearing bore to the bottom of the cylinder block is 405.0 mm (15.94 inch).
9 9 124-1836 Bearing Cap As The Bearing cap assembly must be installed with the part number toward the front of the block. The number of the main bearing cap must also match the cast number on the left side of each main bearing saddle.
Width in the cylinder block for the bearing cap assembly is 500.00 0.05 mm (19.685 0.002 inch).
Width (P) of bearing cap assembly is 499.95 0.03 mm (19.683 0.001 inch).
Protrusion of 6V-3538 Dowel from the bearing cap assembly is 10.0 0.5 mm (0.39 0.02 inch).
Illustration 4 g03162281
Table 3
Item Qty Part Specification Description
10 16 218-0660 Bolt Torque to 1800 200 N m (1328 148 lb ft).
11 64 187-0450 Taperlock Stud Use the following procedure to install the taperlock stud in the cylinder block:
1. Coat the upper half of each taperlock stud with 1.5 mm (0.06 inch) thick coating of 4C-4774 Water and Temperature Resistant Grease.
2. Install taperlock stud in the cylinder block.
3. Tighten the taperlock stud to 100 20 N m (74 15 lb ft).
4. Coat the upper half of each taperlock stud with 1.5 mm (0.06 inch) thick coating of 4C-4774 Water and Temperature Resistant Grease.
12 18 3S-7079 Bolt Use the following procedure in order to tighten the main bearing assembly:
1. Again, tighten taperlock stud (15) in the cylinder block to 100 20 N m (74 15 lb ft).
2. Assemble bearing cap assembly (9), washer (13), and hand tighten the nut (14).
3. Assemble all side bolt (12) on the tab slot side of the cap and hand tighten bolt (12). Before assembly, lubricate washer face