JLG X500AJ Operator Manual - Manual (Page 127)

SECTION 6 - GENERAL SPECIFICATIONS AND OPERATOR MAINTENANCE
3121636 – JLG Lift – 6-17
6.4 ELECTRIC MOTOR MAINTENANCE
Periodically check the condition of the following electric
motor components.
Electric Motor
The electric motor is located inside of the rear hydraulic
valve distributor support cover.
• POWER SUPPLY TERMINALS
Check tightness of the nuts on the power supply termi-
nals and make sure the insulation is intact.
• FAN
Keep air intakes clean and make sure the fan can rotate
freely.
• BEARINGS
Check the condition of the bearings, in the event of
noise contact JLG for replacement, the life of the bear-
ings is reduced significantly in heavy duty operating
conditions.
NOTE: This motor is "brushless" therefore no brushes need to
be checked or replaced.