172Service Manual – CS7010™ 28 - Engine System, Diesel
7. Disconnect the injector pump actuator connector to prevent the engine from starting.
Disconnect
8. Remove any cover over the air inlet but be very careful not to allow anything to get “sucked in” during
the test.
9. Crank the engine over until the compression gauge stops climbing. Record the reading.
Specication is 541 to 597 psi (3.73 to 4.11 MPa) with an allowable limit of 327 psi (2.26 MPa).
Difference among Cylinders - 10% or less.
10. Repeat for the other cylinders.
11. Reassemble in reverse order.
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