Cleaning, maintenance and repairs
Primera BAG0175.3
Check the brake shoes
Open the inspection hole (1) by pulling out the
rubber stopper (if present).
At a residual thickness of
a: for riveted shoes 5 mm
(N 2504) 3 mm
b: for adhesive shoes 2 mm
the brake shoe must be replaced.
Reinsert the rubber tab.
Brake adjustment
Depending on use, the wear and correct opera-
tion of the brakes must be continuously checked
and, if necessary, readjustment must be carried
out. Readjustment is required if approx. 2/3 of
the max. cylinder stroke is required for emergen-
cy braking. To do this, jack up the axle and se-
cure it against unintended movement.
119
Adjustment on linkage adjuster (workshop work)
Move the linkage adjuster by hand in the pres-
sure direction. If the free travel of the long-stroke
diaphragm cylinder pressure rod is max. 35 mm,
the wheel brake must be readjusted.
Adjustments are made using the readjustment
hexagon bolt on the linkage adjuster. Set the free
travel "a" to 10-12 % of the connected brake lev-
er length "B",
e.g. lever length 150 mm = free travel 15 – 18
mm.
120
Adjustment on automatic linkage adjuster (workshop work)
Basic settings are made in the same way as for the standard linkage
adjuster. Readjustment occurs automatically at a cam rotation of ap-
prox. 15°.
The ideal lever position (which cannot be altered owing to the attach-
ment of the cylinder) is approx. 15° before perpendicularity, and the
same in the actuation direction.
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