Illustrations - Hobart 60PL20 Operation And Maintenance Manual

27. Automatic voltage control potentiometer (R5)
28. Cable size compensation rheostat
9. Engine Trouble Shooting Procedures
The following engine trouble shooting procedures were taken from Perkins Diesel Handbook. Certain ab-
normal conditions which may interfere with satisfactory engine operation, together with methods of deter-
mining 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:
-The presence of an adequate supply of air, compressed to a sufficiently high compression pressure.
-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 Handbook for
trouble shooting and repair procedures.

10.Illustrations

Illustrations in Figure 1 are referred to throughout the Trouble Shooting Chart, Figure 2.
December 30/93 Revised
Operating Controls and Instruments
Figure 1 (Sheet 2 of 2)
30. Cable length compensation rheostat
31. Voltage regulator fuse (5A)
OM-2053
3-1
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