ENGLISH
33
MAINTENANCE WORK ON CHASSIS AND ENGINE
»
Changing the basic position of the brake pedal *
The basic setting of the foot brake pedal can be changed by turning the end
stop roller
[1]
. Using the push rod
[2]
, the free play on the foot brake pedal
must be set.
Measured on the outside, the foot brake pedal must have 3-5 mm of free play,
before the push rod can move the piston in the brake cylinder (to be recog-
nised from the resistance on the foot brake pedal).
To keep the stop roller from turning while tightening, insert a hexagon wrench
in bore
[A]
.
If this clearance is missing, pressure accumulates in the braking system and
the brake pads begin to rub. The braking system overheats and can fail com-
pletely in extreme cases.
Checking the rear brake pads
The brake pads can be inspected from the rear. The thickness of the linings
may not be less than 1 mm (0.04 in).
At their most worn point brake pad linings should not be thinner than 1 mm,
otherwise they could lead to brake failure. For your own safety don’t put off
having your brake pads changed.
If the brake pads are replaced too late so that the lining is partly or entirely
worn, the steel components of the brake pad will rub against the brake disc,
thereby imparing the braking effect and destroying the brake disc.
Replacing the rear brake pads *
Press brake caliper
[3]
in direction of chain wheel for the brake piston to reach
its basic position. Remove safety device
[4]
, knock out the guide pin
[5]
from
the brake caliper with a drift towards the chain wheel and remove brake pads.
Carefully clean the brake caliper with compressed air and check sleeves of
the guide pins for damage.
Slide left brake pad into the brake caliper and fix it with the pin. Slide in the
right brake pad and knock the bolt in as far as it will go. Mount safety
device
[4]
.
– It is very important to keep the brake disk free from oil and fatty matters.
Otherwise, the braking effect would be strongly reduced.
– After assembly, check if circlips have been fitted correctly.
– Having performed any work on the braking system, one must always actu-
ate the hand brake lever or foot brake lever, respectively so as to ensure
that the brake pads will lie against the brake disk and the pressure point
is established.
3-5mm
1
2
A
min.
1 mm
3
4
5
