JLG 4017PS Service Manual - Manual (Page 113)

6-3 3706PS, 3707PS, 4014PS, 4017PS, 33.7, 37.6, 37.7
Transmission
Note: These instructions cover only the routine
maintenance, removal, installation and troubleshooting
of the transmission. Refer to the local JLG dealer and
the applicable Transmission Service Manual for
assistance with comprehensive transmission diagnosis,
repair and component replacement.
6.2 TRANSMISSION SERIAL NUMBER
The transmission serial number plate (1) is located on the
front of the transmission case behind the oil dipstick.
Information contained in the serial number is required in
correspondence with the transmission manufacturer.
6.3 SPECIFICATIONS AND
MAINTENANCE INFORMATION
For transmission, oil specifications and maintenance
information, refer to Section 2, “General Information and
Specifications.”
Detailed transmission service instructions are provided in
the following publications:
• Service Manual (P/N 31200908)
• Parts Manual (P/N 31200722)
6.4 TRANSMISSION REPLACEMENT
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, 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 steering wheel.
3. Open the engine cover. Allow the system fluids to cool.
4. Properly disconnect the battery(s).
5. Drain the hydraulic oil reservoir. Refer to Section
8.7.1, “Hydraulic Oil Reservoir Draining.”
6. If not previously removed, remove the implement
pump. Refer to Section 8.8.1, “Pump Replacement.”
7. Refer to Section 7.9, “Engine Replacement,” for
detailed removal instructions.
8. Thoroughly clean the transmission and surrounding
area, including all hoses and fittings, before
proceeding.
9. Place a suitable receptacle under the transmission/
transfer case drain plugs. Remove the transmission
drain plug, and allow the transmission oil to drain
into the receptacle.
10. Remove the transmission transfer case drain plug,
and allow the transfer case oil to drain into the
receptacle.
11. Transfer the used transmission oil into a suitable,
covered container, and label the container as “Used
Oil.” Dispose of used oil at an approved recycling
facility. Clean and reinstall the transmission and
transfer case drain plugs.
WARNING
DO NOT service the machine without following all
safety precautions as outlined in Section 1, “Safety
Practices,” of this manual.
MX6870
1
WARNING
NEVER lift a transmission alone; enlist the help of at
least one assistant or use a suitable hoist or overhead
crane and sling with a minimum lifting capacity of
454 kg (1000 lb).