JLG Skytrak 6036 Service Manual page 266

Section 10. Electrical System
Trouble
Switches and Solenoids—IGNITION (KEY) SWITCH (cont'd)
Ignition switch
causes starter to
crank engine but
doesn't maintain
engine operation
in RUN position.
Starter fails to
crank engine with
travel select lever
in NEUTRAL, the
park lock switch
DISENGAGED and
ignition key switch
in START.
Ignition switch
cranks engine in
START but engine
doesn't operate in
RUN.
Switches and Solenoids—PARK LOCK SWITCH AND PARK LOCK RELEASE VALVE SOLENOID
Park lock switch
fails to disengage
park lock brake in
disengaged
position.
10-72
Probable Cause
1. Fuel run solenoid (34, Fig.
10.5) fails to admit fuel to
fuel injection pump.
2. Fuel tank is empty.
Switches and Solenoids—NEUTRAL START SWITCH
1. Check for problems in the
shift lever linkage.
2. Be sure the neutral start
switch is closing.
Switches and Solenoids—FUEL RUN SOLENOID
1. Fuel run solenoid (34, Fig.
10.5) fails to admit fuel to
fuel injection pump due to
loose connections or
broken wiring.
2. Fuel tank is empty.
3. Fuel run solenoid is stuck
in the OPEN position.
1. Loose connections or
broken wiring.
2. Park lock switch isn't
closed in the disengaged
position.
3. Solenoid fails to shift when
park lock switch is moved
from ENGAGED to
DISENGAGED.
Remedy
Refer to fuel run solenoid
troubleshooting.
Fill fuel tank.
Refer to shift lever linkage
adjustment instructions in
paragraph 4.2.2.
The switch closes when a
switch actuating pin presses
against a spring-loaded ball in
the neutral start switch.
Remove switch from the
control valve assembly and
check actuator pin for free
movement in the control valve
assembly. Also check for
continuity with the pin
pressing against the ball. If
open install new switch.
Tighten connections and
install new wiring as required.
Fill fuel tank.
Install new fuel run solenoid.
Tighten connections and
install new wiring as required.
Repair or replace park lock
switch if it isn't closed in the
disengaged position.
If solenoid fails to shift, refer
to paragraph 10.7.5 and
repair or replace the park lock
release valve solenoid.
Model 6036 S/N 9B0499 and Before
Reference
See para. 10.7.3
See para. 8.4.2
See para. 4.2.2
See para. 10.7.2
See para. 10.7.3
See para. 8.4.2
See para. 10.7.3
See para. 10.7.4
See para. 10.7.4
See para. 10.7.5