Hobart 9OC24S Operation Manual page 232

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OPERATION, MAINTENANCE, AND OVERHAUL MANUAL, TM-240A
SELF-PROPELLED GENERATOR SET, SPEC. NO. 5381A
TROUBLE I SYMPTOM,
AND CONDITIONS PROBABLE CAUSE TEST, CHECK, AND/OR REMEDY
:NGINE AND CONTROLS (CONT'D.)
5. Engine starts. Stops A. Defective component
after engine control in engine protective
switch (2, Fig., 1) shut-down circuit.
is released from
START position.
A. Use a jumper lead to connect
12-V DC to the fue I valve sole-
noid. Start the engine. If it
continues to run when the engine
control switch is released, check
each of the protective shut-down
switches which are identified ant
located in l-l , Fig, 3 as follows
High temperature switch (6), and
oil pressure switch (4). Jumper
each, one at a time, until the
defective switch is found.
NOTE: Do not overlook the
possibility of a defec-
tive engine control
switch (2, Fig. 1).
5. Engine runs at idle A. The 12-V DC input circuit A. To determine which system or
speed. Engine will
to the electric governor circuit is defective, use a jumper
not "come-up" to control box is defective, lead to connect +12-V DC to
governed speed or the governor control terminal No. 1 on the governor
when operating mode
box is defective. electric control box (2-3, Fig.
switch (20, Fig. 1) 12).
is placed in GEN
position.
If the engine accelerates to
governed speed, the fault is in
the 12-V DC input circuit.
Proceed to step (1) be low. If
the engine did not accelerate,
the fault is in the electric
governor system. Proceed to
step (2) below.
(1) Defective 12-V DC
input circuit to gov-
ernor control box
(1) Check as fol !ows:
(a) Gearsh ift Micro
switch mis-adiusted
or defective
(a) Check gearshift Micro
switch to determine if
it is mis-adjusted or
defective (see 2-3, Para.
3-2
Page 16
Trouble Shooting Chart (Sheet 6 of lo)
Figure 6
act 30/73