Maintenance Information; Changing The Lubricating Oil - JLG 1200SJP Service And Maintenance Manual

6. Tighten the 2 socket head screws M8x16 (4) with a male
hex head torque wrench at 18.4 ft.lbs. (25 Nm) torque.
Figure 3-28. Gearbox Disengaged
7. Repeat the above steps to engage the gearbox again.
Operation:
a. Engaged gearbox
At this condition the motion is transmitted from the
hydraulic motor to the gearbox.
b. Disengaged gearbox
AT THIS CONDITION THE HYDRAULIC MOTOR AND THE BRAKE ARE DISCON-
NECTED TO THE GEARBOX: THE WHEEL IS IDLE.

Maintenance Information

PERIODIC MAINTENANCE
The gearbox only requires the scheduled maintenance proce-
dures set out by the manufacturer (see Table 3-5).
Good maintenance will ensure an ongoing functioning in time
as well as maximum reliability.
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SECTION 3 - CHASSIS & TURNTABLE
Should irregularities in function arise, it will be necessary to
consult the troubleshooting checklist to find the most ade-
quate solution.
If unsuccessful, it may be necessary to partially or completely
disassemble the gearbox.
Table 3-5. Drive Hub Maintenance Schedule
Inspection Frequency
Tightening bolts After the first 50 operating hours
of the gearbox
Oil level Every 150 operating hours of the
gearbox
st At 150 operating hours of the
1 oil change
gearbox
Next oil change Every 1200 operating hours

Changing the Lubricating oil

1. Check that the gearbox axis is horizontal. Rotate the
gearbox housing until the drain plug is on the bottom of
the vertical axis of the end cover.
2. Unscrew the both plugs (Fill and Drain) and let the oil
flow in a large enough container; in order to facilitate
draining the oil must still be warm.
3. Wait a few minutes until all the oil is drained and then
proceed to screw on the plugs.
4. Proceed with the oil fill-up. Refer to Filling-up the Gear-
box with Lubricating Oil.
NOTE: Never mix mineral oils with synthetic oils and vice versa.
DO NOT DISPOSE OF THE OIL IN THE NATURAL ENVIRONMENT. BE CAREFUL TO
ELIMINATE IT IN COMPLIANCE WITH THE RELATIVE RULES AND REGULATIONS
THAT GOVERN LOCALLY.
Action
Bolt tightening torque
check
Refill oil if necessary
Oil replacement
Oil replacement
3-35