END-BIT HOT 3G8277 - Caterpillar

Illustration 1 g06148764
Illustration 2 g06148769
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(3) Location pin for correct installation of connecting rod caps
Table 1
Specification for 385-5537 Connecting Rod Gp
Item Qty Part Specification Description
Angle (A) above the centerline on either side of the bearing joint for the sleeve bearing for the piston pin is 10 degrees.
The connecting rod may be heated from 175 to 260 °C (347 to 500 °F) for the installation of the sleeve bearing for the piston pin. Minimum length (B) for heating the connecting rod is 105 mm (4.1 inch). Do not use a torch to heat the connecting rod.
C 1 118-1655 Bushing Thoroughly lubricate the piston pin with clean engine oil prior to assembly of the piston and the connecting rod.
Bore in the bushing for the piston pin after installation of the bushing is 70.000 0.008 mm (2.7559 0.0003 inch).
Bore in the connecting rod for the bushing is 75.760 0.015 mm (2.9827 0.0006 inch).
D - - Distance between the center of the bearings is 380 mm (15.0 inch).
1 - - Etch the cylinder number on the connecting rod and the cap in this location. Mark the connecting rod and the cap with numbers. Mark the numbers on the same side of the connecting rod as the bearing retainer notch.
Install the connecting rod in the engine with the part number to the rear of the engine.
E 1 7N-2043 Dowel Protrusion of the dowel from the connecting rod cap is 4.0 0.5 mm (0.16 0.02 inch).
F - - Bore in the connecting rod for the bearing for the crankshaft connecting rod journal after applying final torque to the connecting rod bolts is 143.028 0.015 mm (5.6310 0.0006 inch).
G - - Bore in the connecting rod bearing for crankshaft is 135.133 to 135.194 mm (5.3202 to 5.3226 inch).
2 4 7N-2405 Bolt Use the following procedure for tightening the connecting rod bolts:
Bolt 1 and bolt 2 must be on the same end of the connecting rod cap that has bearing tabs and location pin (4).
1. Before assembly, apply Molylube on the bolt threads, the bolt shank, and the bolt seat.
2. Sequentially tighten the bolt 1 and bolt 2 to 90 5 N m (66 4 lb ft).
3. Sequentially tighten the bolt 3 and bolt 4 to 90 5 N m (66 4 lb ft).
4. Again, sequentially tighten the bolt 3 and bolt 4 to 90 5 N m (66 4 lb ft).
5. Tighten all bolts for an extra 90 5 degrees.
4 - - The chamfer side must be next to the crank pin thrust surface when the connecting rod and piston group is assembled in the engine.
Side clearance between two connecting rods on the same new crankshaft pin is 0.850 0.332 mm (0.0335 0.0131 inch).