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OM-2031
9. Engine Trouble Shooting Procedures
A. General
The following engine trouble shooting procedures were taken from Cummins Diesel Handbook. Certain
abnormal conditions which may interfere with satisfactory engine operation, together with methods of de-
termining the cause of such conditions, are covered in the Trouble Shooting Chart.
The ability of the engine to start and operate properly depends primarily on two things:
(1) The presence of an adequate supply of air, compressed to a sufficiently high compression pres-
sure.
(2) The injection of the proper amount of fuel at the right time.
Lack of power, uneven running, excessive vibration, stalling, and hard starting may be caused by low com-
pression, faulty injection in one or more cylinders, or lack of sufficient air. Refer to Perkins Diesel Handbook
for trouble shooting and repair procedures.
10.Illustrations
Illustrations, Figures 1 through 4, are referred to throughout the Trouble Shooting Chart.
3-1
Page 4
August 5/89 Revised
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