2003/04/01 Caterpillar


Procedure for Tightening the Locknut for the Fan Drive on 3500 Engines {1359}

Usage:

3512 1LM
Engine: Commercial
  • 3500 Family
  • This procedure is used for 3500 engines that have the following part numbers for the fan drive:

    Note: A 1U-8855 Spanner Socket must be used in order to accomplish this procedure.




    Illustration 1g00949943

    (1) Hub

    (2) Lockwasher

    (3) Locknut

    1. While you are rotating hub (1), tighten locknut (3) to 370 N·m (273 lb ft).

    1. Loosen locknut (3) by one complete turn.

    1. While you are rotating hub (1), tighten locknut (3) to 180 N·m (133 lb ft).

    1. Loosen locknut (3) by a 1/8 turn.

    1. Lock the locknut in place by bending a tab of lockwasher (2) into the slot of locknut (3) .

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