Hobart 9OC24S Operation Manual page 227

OPERATION, MAINTENANCE, AND OVERHAUL MANUAL, TM-240A
SELF-PROPELLED GENERATOR SET, SPEC. NO. 5381A
ROUBLE ,SYMPTOM
AND CONDITIONS PROBABLE CAUSE
TEST. CHFCK. AND/OR REMEDY
ENGINE AND CONTROLS
1 o Engine will not
A. Battery or batteries dis- A. Check battery voltage and
start. Starter charged or faulty
specific gravity. Recharge or
will not crank
replace.
engine .
B. 12-V DC power not B. Check voltage at starter sojenoid
reaching starter solenoid input terminal (6, Fig. 2). Volt-
age should be approximately 13.5
V. If no voltage, check cables
and connections between starter
solenoid, batteries, and ground.
Replace or repair cables and
connectors as required.
C o Starter not properly
C. Check cable and all connections.
grounded
D. Defective start switch D. Check voltage at terminal E9,
W'B)
Fig. 3 while pressing start switch
button (5, Fig. 1). If no volt-
age is indicated, replace switch.
E e Defective starter sole- E . Momentarily connect a large size
noid, or starter (l/O min .) cable between termi-
nals 6 and 4, Fig. 2. If the
starter cranks the engine, the
solenoid (5, Fig. 2) is defective.
If the starter does not crank the
engine, the starter (1) is defec-
tive. In either case, replace
starter and solenoid as an
assembly.
F. Internal seizure or
F. If all engine starting components
locked starter
are good and the starter is unable
to crank the engine, internal
seizure is indicated. Attempt to
hand-crank the engine, using a
3/4-inch square drive with long
flex handle F in the crankshaft
pulley. If the engine cannot be
turned, check starter for locked
Trouble Shooting Chart (Sheet 1 of 19)
Ott 30/73 Figure 6
3-2
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