JLG T350 Service Manual - Manual (Page 62)

SECTION 3 - CHASSIS & TURNTABLE
3-26 – JLG Lift – 3121198
Troubleshooting
Table 3-5. Malfunctions and Remedies
Malfunction Cause Remedy
Insufficient braking effect Excessive backlash in brake system Service at qualified workshop
Brake linings not run in Actuate hand-brake lever slightly; drive 1-2 miles (2-3 km)
Brake linings glazed, oily or damaged Service at qualified workshop
Overrunning hitch hard to operate Grease overrunning hitch
Brake linkage is jammed or deformed Service at qualified workshop
Brake Bowden cables rusty or kinked Service at qualified workshop
Brake reacts by jerks Excessive backlash in brake system Service at qualified workshop
Shock absorber of overrunning hitch defective Service at qualified workshop
Backmat brake shoe is jammed in the brake
shoe holder Service at qualified workshop
Trailer is braked unilaterally Wheel brakes are actuated unilaterally Service at qualified workshop
Trailer is already braked when the accel-
erator pedal is released. Shock absorber of overrunning hitch defective Service at qualified workshop
Reverse driving hard to accomplish or
even impossible Brake system adjusted too tightly Service at qualified workshop
Bowden cables pre-loaded Service at qualified workshop
See "Brake reacts by jerks" Service at qualified workshop
Braking action of handbrake insufficient Incorrect setting Service at qualified workshop
Actuate handbrake lever as far as possible
Wheel brakes get hot Brake system incorrectly set Service at qualified workshop
Wheel brakes dirty Service at qualified workshop
Reversing lever of overrunning hitch is
jammed Service at qualified workshop
Spring type actuator is pre-loaded in zero posi-
tion; nuts are turned in too far Service at qualified workshop
Handbrake lever not or only partially released Set handbrake lever into zero position
Ball coupling does not rest on ball Coupling dirty on the inside Clean and grease properly
Ball of towing vehicle too big Check ball diameter: According to DIN 74058 the ball on the
tow vehicle must not exceed 50 mm in diameter when new
and it must be Ø 49.5 mm. If the ball diameter decreases to
less than 49.0 mm, the ball has to be replaced. The ball must
be perfectly spherical.