Hobart 9OC24S Operation Manual page 233

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gMOTOR GENERATOR DIVISION
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OPERATION, MAINTENANCE, AND OVERHAUL MANUAL, TM-240A
SELF-PROPELLED GENERATOR SET, SPEC. NO. 5381A
TROUBLE ,SYMPTOM
AND CONDITIONS PROBABLE CAUSE
TEST, CHECK, AND/OR REMEDY
6. Engine runs at
A. (Continued)
A. (Continued)
id le speed.
Engine will not (1) (Continued) (1) (Continued)
"come-up" to
governed speed (a) (Continued) (a)4, F). Adjust or replace
when operating as required.
mode switch (20,
Fig. 1) is placed
(b) Operating mode (b) If the gearshift Micro
in GEN position.
switch (20, Fig. 1) switch is found to be good
(Continued) defective and properly adjusted, the
operating mode switch may
be defective. Check and
replace if required.
(c)Excitation-deener-
gization relay (EDR)
defective
(2) Defective governor
control box (Ref. 3-1,
Fig. 1)
(c)Check EDR coil and con-
tacts. Replace EDR if
defective.
(2)Replace control box if defec-
tive.
Do not attempt to repair
7. Engine "misses". A. Low coolant temperature A. If indicated temperature stays
Runs unevenly . below 65 deg F, remove, inspect,
and test the thermostat. Replace
if defective.
B. Insufficient fuel B. Check manifold pressure and
check for fuel restrictions in
accordance with Cummins Opera-
tion and Maintenance Manual.
8. Engine "surges"
C. Faulty in iector
D . Low compression pressure
A. E lectric-hydraulic gov-
ernor system improperly
adiusted.
C. Check injectors individually.
D. Check compression.
A. Check and adjustas follows:
Ott
30/73
Trouble Shooting Chart (Sheet 7 of 19)
Figure 6
3-2
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