User's Manual

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Service Instructions
Measure the distance from the backplate to the wearing surface
of the pad.
The minimum permitted lining thickness (friction material), per
D.O.T. (Department of Transportation) standards, is currently
3 mm (.12 in). (The lining thickness of a new pad is 22 mm
(0.9 in.).) Replace the pads if they are worn out.
Check that the pads are evenly worn by measuring at four
different points on the pad. A maximum of 1 mm [0.04 in.] of
uneven wear is allowed. Also, the inner and outer pads must
be worn equally. In the event of uneven wear, check the sliding
function of the caliper on the slide pins. See "Checking Sliding
Function".
IMPORTANT: Driving with light braking may result in increased
wear on the inner brake lining.
To replace the pads, see the section on "Replacing Pads".
Measure the lateral runout of the brake disc as
follows.
1. Attach a magnetic stand, complete with a dial indicator on the
frame.
2. Place the tip of the dial indicator on the face of the brake disc.
3. Rotate the brake disc. Max. runout 0.5 mm
[0.02 in.].
IMPORTANT: Do not include the wheel bearing play in the
measurement.
1 – Spacers
2 – Brake disc
1 – Carrier
2 – Brake disc
3 – Dial indicator
Checking Pads
Measure the thickness of the brake disc. Minimum thickness of
the brake disc is 41 mm (1.61 in.).
1. If the brake disc has a worn edge, the measurement can be
performed using two (2) spacers.
2. Reduce the measured dimension by the total thickness of the
two (2) spacers.
Checking Brake Disc
Refer to WESM-0060 for bearing adjustment
procedures. Endplay not to exceed .005 in.
Also check the brake disc for cracks and wear tracks.