JLG T350 Service Manual - Manual (Page 61)

SECTION 3 - CHASSIS & TURNTABLE
3121198 – JLG Lift – 3-25
d. The compression spring may only be lightly pre-
tensioned and must not become fully com-
pressed when activated.
3. Brake Linkage
a. Adjust the brake linkage so that it is free of play
longitudinally, without initial tension (reversing
lever free of play).
b. Readjustment: Operate the handbrake lever
powerfully several times in order to settle the
braking system.
Check the position of the brake compensating
balances which should be at right angles to the
direction of towing.
Check the play in the linkage; if necessary,
adjust the linkage again so that it is free of play,
but without initial tension.
Check the position of the handbrake lever; when
checking the dead center of the lever, resistance
starts 10-15 mm above dead center
Check that the wheels rotate freely with the
brake released.
c. Final Check: Check fastenings for security
(secure the hexagon locking nuts to the screw
fastenings for the transmission system, control
cables, brake compensators, turnbuckle, link-
age, etc.)
Check the compression spring for initial tension.
d. Test Run: If necessary, carry out 2-3 brake tests.
e. Brake Test: Recheck the play in the brake link-
age and if necessary, readjust the linkage for
length free of play; during operating braking with
empty trailer should be used maximally 1/2 of
the overrun travel.
READJUSTING THE BRAKING SYSTEM
The main purpose of readjusting the braking system is
compensate for brake lining wear. To readjust the wheel
brakes, follow the instructions under ADJUSTING THE
BRAKING SYSTEM. Check the play in the linkage and
readjust if necessary.
CHECK THE EXPANDING LOCKING MECHANISM AND CONTROL
CABLE. THE EXPANDING LOCK COMPENSATOR MUST NOT BE
PRE-TENSIONED IN THE BRAKE. DO NOT ATTEMPT TO COMPEN-
SATE FOR EASE OF MOVEMENT CAUSED BY BRAKE LINING
WEAR BY READJUSTING (SHORTENING) THE BRAKE LINKAGE,
BY WAY OF THE LINKAGE SCREW FASTENINGS.
1. Readjustment:
a. Operate the handbrake lever powerfully several
times in order to settle the braking system.
b. Check the position of the brake compensating
balances (which should be at right angles to the
direction of towing).
c. Recheck the play in the linkage.
d. If necessary, adjust the linkage again so that it is
free of play, but without the initial tension.
e. Check the positions of the handbrake lever and
compression spring (only light initial tension).
f. When checking the dead center of the lever,
resistance starts 10-15 mm above dead centre.
2. Final Check:
a. Check the screw fastenings for the transmission
system (control cables, brake compensators,
linkage, etc.)