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OM-2031
TROUBLE, SYMPTOM
AND CONDITION
ENGINE AND CONTROLS (CONTINUED)
5. Engine starts.Stops
after a few seconds
by automatic shut-
down.
6. Engine runs at idle
speed. Engine "ON"
indicating light
(27 Fig. 1) does
not glow.
3-1
Page 12
PROBABLE CAUSE
A. The shut-down circuit
may have functioned
normally to stop the
engine because of low
lubricating oil pres-
sure.
B. Defective or incor-
rectly wired high
temperature switch
(S 49, located on the
engine block on the
right side).
A. Lamp defective
B. Indicating light body
poorly grounded
Trouble Shooting Chart (Sheet 4 of 20)
Figure 5
TEST, CHECK, AND/OR
REMEDY
A. Restart the engine, hold
permissive start switch in
START position, and observe
oil pressure gage. If oil
pressure is 12 psi or more,
and the engine shuts down
when the permissive start
switch is released to the
run position, put a jumper
wire across oil pressure
switch terminals "C" and
"NO". Restart engine. If
the engine continues to run
when the permissive start
switch is released to the
RUN position, the oil
pressure switch is
defective. Replace oil
pressure switch
B. Check wiring to high temper-
ature switch. One Red-Yellow
wire should be connected to
the C terminal. With wires
removed, check resistance
between terminals C and N.C.
A resistance reading of zero
indicates a good temperature
switch. A readable resis-
tance, indicates a defective
switch. Replace switch if
defective.
A. Replace lamp.
B. Be sure light is grounded
properly.
August 5/89 Revised
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