Service manual

Section 10
10-88
Model 3606 • Origin 10/99
27. With key in the START posi-
tion, engine does not crank.
1. Travel select lever is in forward (F)
or reverse (R).
1. Move the travel select lever to
NEUTRAL (N).
28. Engine runs momentarily
then stops.
Note: Refer to the Perkins or
Cummins engine trouble-
shooting information in
Section 8A
or
Section 8B
.
1. Defective fuel run solenoid.
2. Fuel tank is empty.
3. Defective fuel injection pump.
4. Clogged or dirty fuel filter.
5. Excessive water in fuel.
1. Refer to Step 30, Fuel Run
Solenoid troubleshooting.
2. Fill fuel tank.
3. Check that pump operates
properly per the appropriate
engine section of this manual.
4. Replace fuel filter.
5. Drain water separator or replace
water filter.
29. NEUTRAL START SWITCH
Starter fails to crank engine
with travel select lever in
NEUTRAL (N), parking
brake switch engaged and
ignition key switch in
START position.
1. Check for problems in the
transmission shift switch or wiring.
2. Check transmission shift switch for
proper operation, continuity,
shorts, etc.
1. Check the transmission shift
switch wiring and fuse.
2. Replace a defective switch or
relay.
30. FUEL RUN SOLENOID
Ignition switch cranks
engine in START position
but engine doesn't operate
when key returns to RUN
position.
1. Fuel run solenoid.
2. Fuel tank is empty.
3. Defective injection pump.
1. Test for voltage at fuel run
solenoid with ignition key switch
in RUN position.
2. Fill fuel tank.
3. Replace pump. See the
appropriate engine
troubleshooting section.
31. PARKING BRAKE SWITCH
When switched to disen-
gaged position, park brake
switch fails to disengage
park brake.
1. Blown fuse.
2. Defective park brake solenoid.
3. Defective park brake switch.
4. Hydraulic problem.
1. Replace fuse.
2. Test solenoids and circuits; test
for continuity with park brake
switch in both positions; check
park brake solenoid operation.
Repair circuits or replace switch
and/or solenoids as required.
3. Replace.
4. Refer to
Section 9 Hydraulic
System
.
32. BACK-UP ALARM
Backup alarm doesn't
sound with travel select
lever in REVERSE (R).
1. No voltage at backup alarm;
broken wiring or blown fuse.
2. Defective alarm.
3. Defective travel select lever.
1. Test alarm and ground circuit;
check for voltage at alarm. Repair
wiring or replace fuse as
required.
2. Test alarm and ground circuit.
3. Test travel select lever for
continuity and circuit for shorts.
Replace travel select lever if
defective.
Electrical System Troubleshooting
Problem Possible Cause Remedy