Detroit Diesel MBE 4000 Service Manual page 66

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CYLINDER HEAD

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Engine Compression Testing

Perform the following steps to compression test the engine:

Start this procedure only when the engine is cold. Wait at least 30 minutes after

switching off the engine.

1. Set the parking brake and chock the tires.

To avoid injury before starting and running the engine,

ensure the vehicle is parked on a level surface, parking

brake is set, and the wheels are blocked.

2. Remove the cylinder head cover. Refer to section 1.1.1.

3. Adjust the valve lash. Refer to section 1.19.3.

To do this procedure, coolant temperature must be between 155 and 205 F (70 to 95 C).

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PERSONAL INJURY

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All information subject to change without notice.

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