Lull 944E-42 Service Manual - Manual (Page 194)

Electrical System
9-36 944E-42
Threaded Mounting Hole
Position the brake switch so the Stabil-TRAK
“Locked” Mode indicator comes ON at the
150 ±50 psi (10,3 ±3,4 bar) brake pressure. If the
brake switch needs to be adjusted, remove the wire
leads from the switch, loosen the locknut from the top
of the switch mounting bracket and thread the switch
in or out until you hear an audible click.
9. Repeat steps 6 through 8 until the Stabil-TRAK
“Slow Pivot” Mode indicator comes ON at the
150 ±50 psi (10,3 ±3,4 bar) brake pressure.
10. After the required pressure is achieved, use a
wrench and fully tighten the locknut against the
service brake valve mounting plate.
In order to test the switch for proper operation, the boom
must be below the 40° position, the parking brake switch
must be in the ON position. Proper operation of the switch
will activate the Stabil-TRAK “Slow Pivot”
Mode indicator (1). If the Stabil-TRAK indicator does not
activate when all conditions are met, the sensor must be
adjusted. Refer to Section 9.11.11, “Boom Angle
Sensor.”
11. Shut off the engine.
12. Remove blocking from front tires.
13. Remove the pressure gauge.
14. Replace lower access panel (15).
9.12 DASH SWITCHES
Note: For information on the front windshield wiper, rear
window wiper and washer systems, refer to Section 9.9,
“Window Wiper/Washer Windshield Wiper Motor.”
9.12.1 Dash Switches
a. Switch Removal
1. Park the machine on a firm, level surface, level the
machine, fully retract the boom, lower the boom,
place the transmission control lever in
(N) NEUTRAL, engage the park brake and shut the
engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and the steering wheel, stating that the
machine should not be operated.
3. Open the engine cover. Allow the system fluids to
cool.
4. Properly disconnect the batteries.
5. Carefully pry the switch and wiring out of the
mounting hole.
6. Label and disconnect the wiring from the switch.
Remove the switch.
b. Disassembly
DO NOT disassemble the dash switch. Replace a
defective switch with a new part.
c. Inspection and Replacement
Inspect the switch terminals for continuity and shorting in
both the engaged and disengaged positions. Replace a
defective or faulty switch with a new switch.
d. Switch Installation
1. Connect the switch to the cab harness connector.
2. Position the switch over the rectangular switch bezel
and snap into position.
3. Properly connect the batteries.
4. Start the machine and check the replaced switch for
proper function.
5. Close and secure the rear door.