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Inspection of brake discs, visual
Visually inspect the inside and outside faces of the brake discs for damage, wear and cracks. (The outside face
of the brake discs can be inspected through the holes in the wheel or by using a mirror and looking from the
inside of the wheel outwards). To assess any damage see « Cracks in the brake disc ».
In case of doubt concerning the extent of the damage, remove the wheel to allow closer inspection. Refer
to Section 2 of the manual.
If there are signs of overheating on the brake disc, inspect the rubber bellows on the disc brake (12 and 32).
(Grease escaping from the wheel hub can also be a sign of overheating). See the brake manual for more information
on checking the operation of the disc brake and adjusting the operating system and brake force if overheating has
occurred.
The checks outlined in subsequent sections should be conducted with brake pads (5) removed. See « Replacing
brake pads » for instructions regarding the removal of brake pads.
Checking pads
Measure the distance from backplate (A) to wear
surface (B) of pad (5) in four places, as shown.
Minimum permitted lining thickness (friction
material) 2 mm (New pads, lining thickness = 22 mm).
Replace pads if they are worn out or if they
are expected to be before the next service.
Also check that pads (5) are evenly worn, max. 1 mm uneven wear (measured at four points). In the event
of uneven wear, check the sliding function of calliper (2) on slide pins (13). See « Checking slide function ».
Also check for dirt between the thrust plates (28) and pads (5), and that the thrust plates (28) are adjusted
evenly during the function test. (Both adjustment screws (35) must be adjusted by the same amount). See
the procedure in the brake manual.
NB!
Driving with light braking may result in increased wear on the inner brake pad.
RI 003-04/11
Section 1
Preliminary
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