1673 DIESEL TRUCK ENGINE Caterpillar


Connecting Rod Bearings

Usage:

Remove And Install Connecting Rod Bearings

preparatory step:

a) remove oil pump

1. Rotate the crankshaft until two pistons are at bottom center. Remove the connecting rod caps from these pistons. Remove the lower half of bearings from the caps.

2. Push the connecting rods away from the crankshaft, and remove upper half of bearings.

3. Clean the connecting rod bearing mounting surfaces, and install upper half of new bearings in the rods. Lubricate the bearings and the crankshaft journals with clean SAE 30 engine oil. Pull the connecting rods into position on the crankshaft.

4. Clean the connecting rod cap bearing mounting surfaces, and install lower half of new bearings in the caps. Lubricate the bearings with clean SAE 30 engine oil.

5. Lubricate the threads of cap retaining bolts with clean SAE 30 engine oil.

6. Position the caps on the connecting rods, and install retaining nuts. Tighten both nuts initially to 30 ± 3 lb. ft. (4,1 ± 0,4 mkg). Mark the nut and end of each bolt, and tighten both nuts an additional 90° from mark.


NOTICE

When installing connecting rod cap, be sure that the number marked on side of cap is adjacent to and corresponds to the number marked on side of connecting rod.


7. Repeat the above steps for remaining connecting rod bearings.

concluding step:

a) install oil pump

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