JLG M600 Service Manual - Manual (Page 40)

SECTION 3 - CHASSIS & TURNTABLE
3-2 – JLG Lift – 3121813
2. Tighten nuts in the following sequence:
3. The tightening of the nuts should be done in stages.
Following the recommended sequence, tighten nuts
per wheel torque chart.
4. Wheel nuts should be torqued after first 50 hours of
operation and after each wheel removal. Check
torque every 3 months or 150 hours of operation.
3.2 DRIVE HUB -REAR (PRIOR TO S/N
0300112585)
The final drive consists of two planetary stages with an
integrated disconnect mechanism. Each stage incorpo-
rates a set of matched planetary gears, which provide an
equal load distribution. All torque transmitting compo-
nents are made of forged quenched and tempered high-
alloy steels. External gears are carburized. Precision roller
bearings support the sprocket or wheel loads. A shaft seal
protects the unit against contamination.
Disengaging for Towing
PRIOR TO OPERATING THE DISCONNECT THE MACHINE HAS TO
BE ON LEVEL GROUND AND COMPLETELY SECURED FROM ANY
MOVEMENT, I.E. VIA TOW BAR TO PULLING VEHICLE. THE
MACHINE SHOULD NOT BE MOVED UNLESS IT IS SECURED TO
THE TOWING VEHICLE TO PREVENT RUNAWAY.
ENSURE THE DISCONNECT MECHANISM IS ONLY OPERATED
WITH THE MACHINE AT A STANDSTILL.
THE GEAR DRIVE TEMPERATURE SHOULD BE CHECKED PRIOR
TO ANY WORK BEING DONE. THIS IS IMPORTANT IF THE GEAR
DRIVE HAS RECENTLY BEEN OPERATED SINCE IT MAY BE HOT
AND CAUSE INJURY.
ENSURE THE AREA SURROUNDING THE DISCONNECT IS
CLEANED PRIOR TO OPERATION. ENSURE THAT DIRT OR OTHER
CONTAMINANTS DO NOT ENTER THE GEAR DRIVE.
1. Remove the two hex head bolts from the cover.
2. Remove the cover.
Table 3-1. Wheel Torque Chart
TORQUE SEQUENCE
1st Stage 2nd Stage 3rd Stage
40 ft. lbs.
(55 Nm)
100 ft. lbs.
(130 Nm)
170 ft. lbs.
(255 Nm)