JLG X23J - X700AJ Service Manual - Manual (Page 92)

SECTION 3 - CHASSIS & TURNTABLE
3121448 – JLG Lift – 3-65
Troubleshooting
The following table is a guideline to identify the troubles in
the track drive.
Anomalies Causes Remedies
External oil leakage :
From the lifetime seal
a)Lifetime damaged a)Replace lifetime seal
From the end cover
a)O-ring seal damaged a)Replace O-ring seals
From the plugs of the cover
a)Plug seal damaged
b)Plugs or screws loose
a)Replace plug seal
b)Tighten the plugs/screws
From hydraulic motor
a)O-ring seals damaged
b)Plugs or screws loose
c)Internal motor parts damaged
a)Replace O-ring seals
b)Tighten the plugs/screws
c)Check the hydraulic motor
Too much noise :
Inside the hydraulic motor (mechanical noise)
a)Internal motor parts damaged a)Check the hydraulic motor
Hydraulic noise (during the slowing down of
the motor speed)
a)Internal motor parts damaged a)Check the hydraulic motor
Inside the gearmotor (reductions)
a)Internal damage a)Check the gearbox
Other:
Overheating
a)Insufficient oil level
b)Hydraulic oil too warm
a)Check the oil level and refill if neces-
sary
b)Check the hydraulic circuit
Insufficient torque
a)Internal motor parts damaged a)Check the hydraulic motor
Insufficient speed
a)Motor feed not correct
b)Low volumetric efficiency
a)Check the hydraulic circuit
b)Check the hydraulic motor
Sprocket locked
a)Hydraulic motor locked
b)Mechanical components damaged
a)Check hydraulic motor
b)Replace damaged parts