FRAME AS-UNDERCARRIAGE 1089177 - Caterpillar

Illustration 1 g00594371
Note: The connecting rod must be heated for the installation of the piston pin bearing. Do not use a torch.The connecting rod may be heated from 175° to 260 °C (347 °F to 500 °F) for the installation of the piston pin bearing.Length (A) is the maximum distance for heating the connecting rod . ... 75 5 mm (3.0 0.2 inch)The bearing joint must be at angle (B) which is 12.0 5.0 degrees above the centerline. (1) Bore size Bore in the connecting rod for the piston pin bearing ... 43.191 0.013 mm (1.7004 0.0005 inch) Bore in the bearing for the piston pin ... 40.028 0.008 mm (1.5759 0.0003 inch) (2) Distance between the center of the bearings ... 200.00 mm (7.874 inch) (3) Location for the etched cylinder numbers on the rod and the cap after assemblyNote: Etch the cylinder number on the connecting rod and the cap in this location (3) . Mark the numbers on the same side of the connecting rod as the bearing retainer notch. (4) Connecting rod bolts (5) Bore in the connecting rod for the bearing for the crankshaft connecting rod journal ... 75.000 0.013 mm (2.9527 0.0005 inch)Tighten the connecting rod bolts. Use the instructions that follow:
Before installing the connecting rod bolts (4) , lubricate the bolt threads and the seating faces of the caps with engine oil.
Install the connecting rod bolts (4) .Tighten each nut to the following torque. ... 54 7 N m (40 5 lb ft)
Put an alignment mark on the cap and the nut.
Tighten each nut for an additional 60 5 degrees (1/6 of a turn).