CYLINDER COMPRESSION TEST
THIS WORK PACKAGE COVERS:
Before Test, Test, and After Test
Cylinder compression adapter (item 1, WP 0176)
Track Vehicle Repairer (2) 63H10
Cylinder compression gauge (item 24, WP 0176)
General mechanic's tool kit (item 121, WP 0176)
Engine at normal operating temperature with
fuel supply cut off.
Mandatory Replacement Parts:
Fuel injector nozzle assemblies removed (WP
Gasket (12) (item 272, WP 0175)
Expendable and Durable Items:
Lubriplate (item 23, WP 0173)
All nozzles must be removed when performing a compression check.
Nozzle removal will prevent the possibility of the engine firing on
other cylinders when the engine is cranked, and permits the engine to
be cranked at the required rpm to check compression. Unexpected
starting of the engine could injure personnel.
Compression testing must be performed within 1 hour after stopping
1. With all nozzles removed from engine, crank engine for 30 seconds to clear cylinders of
possible sources of ignition.
2. Position new injector nozzle gasket (flat washer) (1) (item 272, WP 0175) on end of
compression adapter (2) (item 1, WP 0176). Apply a light coating of Lubriplate (item 23,
WP 0173) on gasket so it adheres to adapter when installed in cylinder.
WP 0033 00-1