CONNECTOR 7I1284 - Caterpillar

Illustration 1 g01418662
(A) The bearing joint for the piston pin bearing must be positioned to the following angle above the centerline on either side. ... 12.5 5.0 degreesNote: The connecting rod must be heated for the installation of the piston pin bearing. Do not use a torch. (B) The connecting rod may be heated from 175 to 260 °C (347 to 500 °F) for the installation of the piston pin bearing. Maximum distance for heating the connecting rod ... 85.0 mm (3.35 inch)Note: Thoroughly lubricate the piston pin with clean engine oil prior to assembly of the piston and connecting rod. (C) Bore in the piston pin bearing after installation of the bearing ... 50.830 0.008 mm (2.0012 0.0003 inch)Bore in the connecting rod for the piston pin bearing ... 55.435 0.013 mm (2.1825 0.0005 inch)Diameter of the piston pin ... 50.795 0.005 mm (1.9998 0.0002 inch) (D) Distance between the center of the bearings ... 247.00 mm (9.724 inch) (E) Bore in the connecting rod for the bearing for the crankshaft connecting rod journal ... 86.800 0.013 mm (3.4173 0.0005 inch) (1) 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.Use the following procedure to tighten the connecting rod bolts (2):
Lubricate the threads of the bolts and the seating faces of the caps with 4C-5592 Anti-Seize Compound .
Torque the bolts to 130 7 N m (95 5 lb ft).
Place an index mark on each connecting rod cap bolt.
Rotate each bolt for an additional 60 5 degrees (1/6 of a turn).