JLG M450 ANSI Service Manual - Manual (Page 46)

SECTION 3 - CHASSIS & TURNTABLE
3-6 – JLG Lift – 3121127
Final Assembly
1. Install thrust washer (29) in spindle (60).
2. Install o-ring (19) into groove of support ring (6).
3. Install planet gears (1) onto planet pins which are
part of spindle (60).
4. Install snap rings (15) on planet pins of spindle (60)
in order to fix the planet gears (1).
5. Put ring gear (30) onto support ring (6) and fix ring
gear (30) with hex head bolts (23). Tighten bolts with
torque wrench to 15.5 ft. lbs.(21.1 Nm).
6. Insert the first stage planetary assembly (7) into
drive.
7. Install o-ring (33) in groove of ring gear (30).
8. Install end the cover unit (8) on shoulder ring gear
(30) and fix with snap ring (34).
9. Install seal rings (21) and screw plugs (22).
10. Before installation of motor, CHECK THAT THERE IS
1-2mm OF CLEARANCE BETWEEN THE MOTOR
SPLINE SHAFT SHOULDER AND THE COUPLER
(62).
11. Install the motor and reconnect hydraulic lines.
12. Roll motor so that one fill plug is at 12 o’clock posi-
tion, and the other is at 3 o’clock. Fill to bottom of 3
o’ clock plug with gear oil. reinstall plugs
Initial Start-up and After Repairs
Before operating the machine, make sure that the drive is
filled with clean oil, approximately.2 us gallons(.8 L). An
accurate oil level is determined by the oil level plug, which
should be removed before oil fill.
With the gear case filled to their proper levels, start the
machine and allow sufficient time for run-in at moderate
pressure and speed before running at full speed. After 4
hours of operation, recheck oil level.
Maintenance
Daily: - Check for oil leakage
Weekly: - Check oil level
Monthly: - Check mounting bolt torque
Oil Change Interval-Gear Drive
1. Perform the first oil change after approximately 150
hours.
2. Subsequent changes, every 1500 hours or annually,
whichever occurs first.
NOTE: Flush the drive before filling with new oil.
Setting of Tapered Roller Bearings
NOTE: The numbers in parentheses ( ) reference the figure
Drive Hub- Cutaway.
1. De-grease threads of the spindle (60) and shaft nut
(4).
2. Spin the shaft nut onto spindle by hand to insure the
threads are in good condition.
3. Apply Loctite 270 evenly to threads of the shaft nut.
4. Rotate the support ring repeatedly in one direction
only, during setting of the tapered roller bearings.
5. Tighten shaft nut to 626 ft. lbs. (850 Nm).
6. Do not use the hub for 24 hours to allow the Loctite
to harden properly.
7. Do not fill with oil for 24 hours to allow the Loctite to
harden properly.
Securing of the Shaft Nut
1. After proper bearing setting is completed, use a suit-
able punch to place ball (24) 0.04 to 0.05 inches (1.1
to 1.3 mm) into the spindle thread. Then set ball (24)
in position by punching in expander (25).