JLG G12-55A Service Manual - Manual (Page 159)

9-17 G10-55A, G12-55A
Electrical System
6. Remove nut on end of park brake coil (7).
7. Remove park brake coil.
8. Remove park brake solenoid (8). (Remove only if
electrical coil is found to not be faulty.)
b. Disassembly
DO NOT disassemble the solenoid. The solenoid is not
serviceable. Replace solenoid if found to be defective.
c. Park Brake Solenoid Valve Installation
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.
1. If necessary, install the park brake solenoid in its
original orientation.
2. Slide park brake coil over solenoid. Tighten nut to
secure solenoid. DO NOT overtighten.
3. Connect wiring connector to park brake coil lead.
4. Properly connect batteries.
5. Close and secure engine cover.
6. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
9.9.2 Transmission Solenoid Valves
Note: If the transmission is not shifting properly, the
transmission shift control switch (transmission control
lever), wiring harness or transmission shift solenoids (9)
should be checked in order to determine which
component is defective. Specific information to
determine which travel position and corresponding
component is not responding can be found in the
detailed transmission service instructions (covering
repair, disassembly, reassembly and adjustment
information) are provided in the ZF Powershift
Transmission 4WG-92/98 TSC Repair Manual, (JLG P/N
31200241) and can be obtained by calling your local JLG
dealer or ZF Service Center.
The transmission should be checked, serviced and
repaired only by experienced service technicians who
are aware of all safety instructions and particular
component features.
Note: Contact the JLG Service Department if internal
transmission repair is required during warranty period.
MY7320
7
8
MY7330
9 (Y4)
9 (Y5)
9 (Y2)
9 (Y3)
9 (Y1)
9 (Y6)
10