JLG G5-18A Service Manual - Manual (Page 61)

6.3 G5-18A/2505
Transmission
6.2 TRANSMISSION DESCRIPTION
Instructions in this section pertain mainly to general
specifications, towing, maintenance information, and
transmission removal and installation procedures. For
internal transmission service instructions and detailed
specifications contact your local JLG distributor for a copy
of the Rexroth Repair Manual (P/N 31200124).
More information can be obtained from the serial number
plate directly mounted on the transmission. Information
specified on the serial number plate includes the
transmission model number, the transmission serial
number and other data. Information on the serial number
plate is required in correspondence regarding the
transmission.
6.3 TRANSMISSION SPECIFICATIONS
6.3.1 Transmission Maintenance
The transmission is a hydraulic component and requires
the same maintenance as the hydraulic system. Refer to
Section 2.5, “Maintenance Schedules.”
Performance criteria is based on full throttle engine
speed unless otherwise specified or not applicable.
6.4 TRANSMISSION REPLACEMENT
Note: Contact your local JLG distributor if internal
transmission repair is required during the warranty
period.
Note: To help ensure safety and optimum performance,
replace the transmission if it is damaged. Refer to the
appropriate parts manual for ordering information.
Cleanliness is of extreme importance. Before attempting
to remove the transmission, thoroughly clean the exterior
of the transmission to help prevent dirt from entering
during the replacement process. Avoid spraying water or
cleaning solution onto or near the transmission shift
solenoids and other electrical components.
6.4.1 Transmission Removal
1. Park the machine on a firm, level surface, fully
retract the boom, lower the boom, place the
transmission control lever in (N) NEUTRAL, turn rear
wheels to give easier access to rear of engine
compartment, engage the park brake and shut the
engine OFF.
2. Place an Do Not Operate Tag on both the ignition
key switch and steering wheel, stating that the
machine should not be operated.
3. Open the engine covers. Allow the system fluids to
cool.
4. Disconnect the battery negative (-) cable at the
battery negative (-) terminal.
5. Remove the air cleaner assembly.
6. Remove hood support at rear of engine.
7. Drain the hydraulic oil reservoir. Refer to Section
8.7.2, “Hydraulic Oil Reservoir Draining.”
8. Label, disconnect and cap all hydraulic hoses
attached to transmission, cap all fittings and
openings to keep dirt & debris from entering
hydraulic system.
9. Label and disconnect all electrical connections
attached to the transmission.
10. Wipe up any spilled hydraulic oil.
WARNING
DO NOT service the machine without following all
safety precautions as outlined in the “Safety
Practices” section of this manual. Failure to follow the
safety practices could result in death or serious injury.
NOTICE
DO NOT use flushing compounds for cleaning
purposes.