JLG 120-SXJ ANSI Service Manual - Manual (Page 30)

SECTION 3 - CHASSIS & TURNTABLE
3-2 – JLG Lift – 3121105
Assembly of First Stage Planetary Assembly
(7)
1. Pre-freeze planet pins (5) and install into planet car-
rier (7).
2. Install planet carrier (7) together with planet pins (5)
on sun gear (3), and install snap ring (16).
3. Put sun gear shaft (43) into sun gear (3).
4. Pre-heat stay rings (17) and install onto planet pins
(5).
5. Pre-heat cylindrical roller bearings (10) and install
onto planet pins (5) and fix bearings with snap rings
(14).
Assembly of End Cover Unit (8)
1. Install “o” ring (54) into groove of cover (8).
2. Install the cover (51) into cover (8) and fix cover (51)
with hex bolts (53). Tighten bolts with torque wrench
to 6.3 ft. lbs. (8.5 Nm).
Final Assembly
1. Install planet gears (1) onto planet pins which are
part of spindle (60).
2. Install snap rings (15) on planet pins of spindle (60)
in order to fix the planet gears (1).
3. Insert the first stage planetary assembly (7) into
drive.
4. Install “o” ring (33) in groove of ring gear (30).
5. Install seal rings (22) and screw plugs (21).
6. Before installation of motor, CHECK THAT THERE IS
1-2 mm OF CLEARANCE BETWEEN THE MOTOR
SPLINE SHAFT SHOULDER AND THE COUPLER
(62).
7. Install the motor and reconnect hydraulic lines.
8. 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 0.2 US gallons(0.8 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.