CORE 2S3734 - Caterpillar

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Number (1) and (2) connecting rod bolts are on the same side of the connecting rod as the bearing tab slots.
1. Remove bolts (2) and (3). Replace with new bolts and nuts. Refer to steps 1 and 2 of the BOLT INSTALLATION PROCEDURE for instructions on applying thread lubrication and installing the nuts.
2. Remove bolts (1) and (4). Replace with new bolts and nuts. Refer to steps 1 and 2 of the BOLT INSTALLATION PROCEDURE for instructions on applying thread lubrication and installing the nuts.
BOLT INSTALLATION PROCEDURE
1. Brush 334-0519 Molylube anti-seize lubricant on the bolt threads, nut threads, and nut seating face after the rod bolt is installed in the rod. Do not use Molykote GN anti-seize with this procedure.
2. Turn all four nuts by hand until they contact the cap face. Threading the nuts by hand provides an opportunity to identify problems with the threads. There should be no resistance felt that would indicate thread damage or debris in the threads. If the nuts and/or bolts cannot be threaded by hand, they should be replaced. Do not run the nuts up to the cap face with a torque gun.
3. Tighten nut (1), (4), (2), and then (3) to a torque of 105 +/- 15 Nm (75 +/- 11 lb ft).
4. Tighten nut (1), (4), (2), and then (3) to a torque of 375 +/- 15 Nm (277 +/- 11 lb ft).
5. Retighten nut (2), (3), (1), and then (4) to a torque of 375 +/- 15 Nm (277 +/- 11 lb ft).
6. Turn nut (1), (4), (2), and then (3) an additional 180 +/- 5 degrees.