CRANKSHAFT AS 4W3498 - Caterpillar

Illustration 1 g00490254
(1) Bore in the connecting rod for the piston pin bearing ... 55.435 0.013 mm (2.1825 .0005 inch)Note: The connecting rod must be heated for the installation of the piston pin bearing. Do not use a torch. (2) The connecting rod may be heated from 175°C to 260°C (347°F to 500°F) for the installation of the piston pin bearing. Maximum distance for heating the connecting rod ... 85.0 mm (3.35 inch) (3) Bore in the bearing for the piston pin ... 50.830 0.008 mm (2.0012 .0003 inch)Diameter of the piston pin ... 50.795 0.005 mm (2.0000 .0002 inch)Thoroughly lubricate the piston pin with clean engine oil prior to assembly of the piston and connecting rod. (4) The bearing joint must be within 12.5 degrees of either location. (5) Distance between the center of the bearings ... 247.00 mm (9.724 inch) (6) Etch the cylinder number on the connecting rod and the cap in this location. Mark the connecting rod and the cap with a number 1 through 6. Mark the numbers on the same side of the connecting rod as the bearing retainer notch.Note: Install the connecting rod in the engine with the part number to the rear of the engine. (7) Tighten the connecting rod bolts. Use the instructions that follow.
Before installing the connecting rod bolts, lubricate the bolt threads and the seating faces of the caps with 2P-2506 Thread Compound .
Tighten the connecting rod bolts.Tighten the connecting rod bolts to the following torque. ... 130 7 N m (95 5 lb ft)
Tighten each connecting rod bolt for an additional amount.Rotate each connecting rod bolt in the clockwise direction. ... 60 5 degrees (1/6 of a turn) (8) Bore in the connecting rod for the crankshaft bearing ... 86.800 0.013 mm (3.4173 .0005 inch)