JLG T500J, Service And Maintenance Manual

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SECTION 3 - CHASSIS & TURNTABLE
3121200 3-9
2. Brake Compensating System
a. Preadjust the length of the brake linkage (slight play
permitted).
b. Operate the handbrake lever (3) and check the posi-
tion of the compensating balances (9 & 10). They
should be at right angles to the direction of towing.
c. If necessary, adjust the position of the balance (10)
and control cables (11).
d. The compression spring may only be lightly pre-ten-
sioned and must not become fully compressed
when activated.
3. Brake Linkage
a. Adjust the brake linkage so that it is free of play lon-
gitudinally, 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 bal-
ances which should be at right angles to the direc-
tion of towing.


Check the play in the linkage; if necessary, adjust
the linkage again so that it is free of play, but with-
out 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 trans-
mission system, control cables, brake compensators,
turnbuckle, linkage, 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 linkage
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 com-
pensate for brake lining wear. To readjust the wheel brakes,
follow the instructions under ADJUSTING THE BRAKING SYS-
TEM. 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 COMPENSATE FOR EASE OF MOVEMENT CAUSED
BY BRAKE LINING WEAR BY READJUSTING (SHORTENING) THE BRAKE LINK-
AGE, 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 bal-
ances (which should be at right angles to the direc-
tion 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, resis-
tance starts 10-15 mm above dead centre.
2. Final Check:
a. Check the screw fastenings for the transmission sys-
tem (control cables, brake compensators, linkage,
etc.)