JLG 4013PS Service Manual - Manual (Page 69)

4-7 3508PS, 3509PS, 3512PS, 3513PS, 4008PS, 4009PS, 4012PS, 4013PS, 4017PS, 40.8, 40.9
Cab and Covers
4.3.6 Parking Brake (17M)
a. Park Brake 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. Block the wheels.
5. Properly disconnect the battery.
6. Remove the cover (3) from around the park brake
lever.
7. Disconnect the park brake electrical connector
switch (4).
8. Label, disconnect and cap the hydraulic hoses
attached to the park brake. Cap all fittings to prevent
dirt and debris from entering the hydraulic system.
9. Remove the bolts holding the park brake lever to the
mounting plate.
Note: DO NOT disassemble the park brake valve. The
valve is not serviceable and must be replaced in its
entirety, if defective.
b. Park Brake Installation
1. Secure the park brake lever to the mounting plate
using the pre-existing mounting hardware.
Note: ALWAYS replace seals, o-rings, gaskets, etc.,
with new parts to help ensure proper sealing and
operation. Lubricate seals and o-rings with clean
hydraulic oil.
2. Uncap and connect the previously labeled hydraulic
hoses to the park brake.
3. Connect the park brake electrical connector switch.
4. Check the routing of all hoses for sharp bends or
interference with any rotating members, and install
tie wraps and/or protective conduit as required.
5. Start the engine and run at approximately 30-50%
throttle for about one minute, without moving the
machine or operating any hydraulic functions.
6. Bleed air from the brake circuit. Refer to Section
8.9.3, “Brake Test.”
7. Inspect the park brake valve and connections for
leaks, and check the level of the hydraulic oil in the
reservoir. Shut the engine OFF.
8. With the park brake applied, check the display panel
for the proper indicator light.
9. Wipe up any hydraulic oil spillage in, on, near and
around the machine, work area and tools.
10. Reinstall the cover around the park brake lever.
11. Properly connect the battery.
12. Unblock the wheels.
13. Close and secure the engine cover.
14. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
4.3.7 Windshield Wiper Assembly
Refer to Section 9.12.1, “Windshield Wiper Motor,” for
removal and installation information.
4.3.8 Windshield Washer Assembly
Refer to Section 9.12.3, “Windshield Washer Reservoir
and Pump,” for removal and installation information.
MZ2020
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