Adjustment And Readjustment Of The Overrun Braking System - JLG t350 Service And Maintenance Manual

SECTION 3 - CHASSIS & TURNTABLE
Adjustment and Readjustment of the
Overrun Braking System
ADJUSTING THE BRAKING SYSTEM
Preparations:
1. Place the trailer on jacks with the wheels off of the
ground.
2. Release the handbrake
3. Pull out the drawbar as far as it will go.
Preliminary Requirements:
1. When carrying out adjustments, always start with the
wheel brakes.
2. When carrying out adjustments, turn the wheel only
in the direction of forward travel.
3. Do not pre-tension the expanding locking mecha-
nism in the brake. If necessary, loosen the brake
linkage at the brake compensator.
4. Check the expanding locking mechanism and con-
trol cable for ease of movement.
NEVER READJUST THE BRAKING SYSTEM OR BRAKES BY THE
BRAKE LINKAGE OR TURNBUCKLES (IF APPLICABLE) IN THE
LINKAGE. THE COMPRESSION SPRING MAY ONLY BE LIGHTLY
PRE-TENSIONED AND MUST NOT BECOME FULLY COMPRESSED
WHEN ACTIVATED!
1. Contact Breaking Cable
2. Trailer Coupling Ring
3. Handbrake Lever
4. Transmission Lever
5. Drawbar & Bellows
Figure 3-8. Overrun Brake System
3-24
ADJUSTMENT PROCEDURE
1. Brake
a. Loosen the linkage
b. Tighten the adjusting screw (12) (on the outside
of the brake plate, opposite the cable entry[13]),
turning clockwise until the wheel can only be
turned with difficulty or not at all.
c. Ease off the adjusting screw (12) in the counter-
clockwise direction (approx. 1/2 turn) until the
wheel turns freely. Slight rubbing noises, which
do not effect the free turning of the wheel, are
permitted.
d. When the brake is correctly adjusted, the actuat-
ing travel of the control cable (11) will be 5-8
mm.
e. Repeat the procedure on the other wheel.
2. Brake Compensating System
a. Preadjust the length of the brake linkage (slight
play permitted).
b. Operate the handbrake lever (3) and check the
position 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).
– JLG Lift – 3121198