KTM 144 SX - Manual (Page 26)

ENGLISH
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Changing the basic position of the foot brake pedal *
To change the basic position of the foot brake lever, loosen the counternut
[1] and turn the stop screw [2] as needed. Be sure to adjust the free travel
of the foot brake lever. Measured on the outside, the foot brake lever should
have 3-5 mm free travel before the piston rod moves the piston in the foot
brake cylinder (you will feel the stronger resistance of the foot brake lever).
Loosen the counternut [3] and turn the pushrod [4] as needed.
The brake system will build up pressure if there is no free travel on the foot
brake lever. This will cause the brake pads to grind. The brake system will
overheat and can break down entirely in extreme cases.
MAINTENANCE WORK ON CHASSIS AND ENGINE
»
3-5mm
4
3
2
1
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 the brake caliper [5] in the direction of the chain wheel for the brake
piston to reach its basic position. Remove the safety device [6], knock out
the guide pin [7] from the brake caliper with a drift towards the chain wheel
and remove the brake pads. Carefully clean the brake caliper with compressed
air and check the sleeves of the guide pins for damage.
Slide the left brake pad into the brake caliper and fix it with the pin. Slide in
the right brake pad and knock the bolt [7] in as far as it will go. Mount the
safety device [6].
– 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.
– After working on the braking system, one must always actuate 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.
min.
1 mm
5
7
6 6