Doosan 12/154, Operation & Maintenance Manual

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66 MAINTENANCE
12/154
Re-adjustment
The handbrake lever [1] should be engaged forcefully several times to
set the braking system.
Check the setting of the brake equalisation assembly [8], which should
be at right angles to the pulling direction.
Check the play in the brake linkage [7] again, ensuring that there is no
play in the brake linkage and that it is adjusted without pre-tension
Check the position of the hand brake lever [1], cable [5] (with little play)
and the compression spring [9] (only slight pre-tension). The start of
resistance of the handbrake lever should be approximately 10-15mm
above the horizontal position.
Final test
Check the fastenings on the transmission system (cables, brake
equalisation system and linkage)
Apply the handbrake while rolling the machine forward, travel of the
handbrake lever up to
2
/
3
of maximum is allowed.
Check the handbrake cable [5] for a small amount of play and adjust if
necessary (Variable height only).
Check the compression spring [9] for slight pre-tensioning.
RUNNING GEAR HEIGHT ADJUSTMENT (KNOTT KHD)
Operating the height adjusting mechanism
To adjust the coupling to the proper height, the lock spring must first
be removed. Turning the handle clockwise will move the coupling
down, turning it counterclockwise will move the coupling up. The
direction of adjustment is visible on the warning label. After reaching
the desired position, the coupling must be secured with the lock spring
again.
WARNING:
During height adjustment, the drawbar may NOT be connected to the
towing vehicle!
After connecting the coupling to the towing vehicle, turning the
handle
IS FORBIDDEN!
Lifting of the trailer by turning the handle IS STRICTLY FORBIDDEN!
1. Warning label
2. Lock spring
3. Upward adjustment
4. Downward adjustment