637G Wheel Tractor-Scraper Caterpillar


Engine Air Filter Service Indicator - Inspect

Usage:

637G CEH


NOTICE

Service the air cleaner only with the engine stopped. Engine damage could result.


Procedure for the Tractor



Illustration 1g00927803

The engine filter element indicator (1) for the tractor is located on the right side of the tractor on the outside of the engine compartment. Use a towel to remove the dust which has collected on the indicator.

Examine the indicator. The machine may be operated when the indicator is yellow. The machine should not be operated when the indicator is red. The air cleaner will need to be cleaned or the air cleaner will need to be replaced.

Once the air cleaner has been checked, the indicator should be reset. Push in on the bottom of the indicator (2). The indicator will return to the yellow color.

Note: See the Operation and Maintenance Manual, "Engine Air Filter Primary Element - Clean/Replace". See the Operation and Maintenance Manual, "Engine Air Filter Secondary Element - Replace".

Procedure for the Scraper



Illustration 2g00945461

  1. Start the engine.

  2. Run the engine at high idle.

  3. Open the left side engine compartment door.

  4. If the yellow piston in engine air filter service indicator (3) enters the red zone, service the air cleaner.

  5. Stop the engine.

    Note: See the Operation and Maintenance Manual, "Engine Air Filter Primary Element - Clean/Replace". See the Operation and Maintenance Manual, "Engine Air Filter Secondary Element - Replace".

Note: Refer to Operation and Maintenance Manual, "Engine Air Filter Service Indicator - Inspect/Replace" in order to check an engine air filter service indicator that is faulty.

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