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 TM 9-2815-220-24
CYLINDER COMPRESSION TEST
THIS WORK PACKAGE COVERS:
Before Test, Test, and After Test
INITIAL SETUP:
Tools:
Personnel Required:
Cylinder compression adapter (item 1, WP 0176)
Track Vehicle Repairer (2) 63H10
Cylinder compression gauge (item 24, WP 0176)
Equipment Conditions:
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)
BEFORE TEST
WARNING
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.
NOTE
Compression testing must be performed within 1 hour after stopping
engine.
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,
2
1
WP 0033 00-1
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