Hobart Jet-Ex 5D Operation And Maintenance Manual page 62

OM-2094 / Operation and Maintenance Manual
Jet-Ex 5D / Series 500285 / Generator Set
Engine and Controls (continued)
See section 2-4 for all figures referenced in this section.
Trouble, Symptom and Condition
Engine will not start. Starter
will not crank engine
(continued).
2. Engine will not start. Starter
DOES crank engine.
3. Engine starts then stops.
Chapter 2-5
Page 2
Probable Cause
f. Engine seized up
a. ENGINE CIRCUIT FUSE
F402 (14, Figure 4) blown
b. Fuel valve at tank closed, or
no fuel in tank, engine has
lost its prime
c. Defective ENGINE
CIRCUIT toggle switch
S404 (13, Figure 4)
d. Defective fuel valve
solenoid (L404).
e. Defective fuel pump.
a. Fuel not turned on.
b. Defective oil pressure
switch S403 (5, Figure 3)
Test, Check, and Remedy
NOTE:
If engine is overcharged
with ether for cold weather
starting, it could seize up. If so,
wait approx. 1/2 hour until it will
be possible to turn engine.
Replace ENGINE CIRCUIT
FUSE. Use type AGC-2O fuse.
Check and correct as required.
Check for 12-V DC from
terminal 4 of S404 in "START"
position. If 12-V DC is not
measured, replace defective
switch.
Attempt to start engine while
applying 12-V DC to the fuel
valve solenoid. If the engine
starts, the solenoid is defective,
and should be replaced. If
engine still doesn't start,
proceed to next step.
Check fuel pump according to
instructions in the Engine
Manufactures User's Manual.
Turn on fuel shutoff valve.
Connect a jumper wire across
the "C" and "N.O." terminals of
oil pressure switch. Start engine
and check oil pressure. If it is
below 10 PSI (69 kPa) shut
down the engine and check
lubrication system for leaks.
Also check the oil pump for
leaks. If oil pressure comes up
to normal and the engine
continues to run, the oil
pressure switch is defective.
Replace oil pressure switch.
November 1, 2000
Revised 03/01