D379, D398, D399 INDUSTRIAL & MARINE ENGINES Caterpillar


Service Meter And Tachometer Drive

Usage:

Remove Service Meter And Tachometer Drive

1. Remove two bolts (1) and service meter (2).

2. Remove two bolts (3), lockwashers, clamps and tachometer drive assembly (4).

3. Remove four bolts (5), lockwashers and housing (6).

4. Remove the lip type seal from housing (6) with tooling (A).

5. Remove two bolts (7) and adapter (8).

Install Service Meter And Tachometer Drive

1. Install two washers, adapter (2) and bolts (1). Bend the locks.

2. Install the lip type seal in housing (3) with tooling (A). Install the seal with the seal lip toward the engine. Put a thin layer of SAE 30 oil on the seal lip and the seal bore in the housing.

3. Install a new gasket and housing (3) on the engine with four bolts and lockwashers.

4. Inspect and make a replacement, if necessary, of O-ring seal (4) on tachometer drive (5). Install the tachometer drive on the housing with two clamps, lockwashers and bolts.

5. Inspect and make a replacement, if necessary, of O-ring seal (6) on service meter (7). Put a thin layer of SAE 30 oil in the counterbore of the tachometer drive. Install the service meter with two clamps, lockwashers and bolts. Tighten the bolts to a torque of 8 ± 2 lb. ft. (11 ± 3 N.m).

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