Page 26 - KNORR Pneumatic Disc Brake

6

Brake Pad Replacement

6 Brake Pad Replacement

Before starting work, ensure that the wheels are
chocked and the vehicle cannot roll away. 11
Ensure that service brake and parking brake, as
well as bus stop temporary hold brake, if fitted, 44
are in the released condition.
6.1 Removal of Brake Pads

6.1.1. Remove wheel (refer to vehicle manufacturer’s
recommendations).
Important! 45 26
Before removing pads it is strongly recommended that the
adjuster mechanism is checked for correct operation (see
Section 5.2).
Depending on the orientation of the caliper on the 6.1.2 - Removing pad retainer
axle, brake pads could fall out when removing the
pad retainer (11).

6.1.2. Remove spring clip (26) and washer (45), depress
the pad retainer (11) and remove pin (44) (see Fig).

If necessary remove any in-pad wear sensor components.

6.1.3. Pull off the adjuster cap (37) using the tab, taking
care not to lose the shear adapter (61) (see Fig. insert).
23
Do not use any tools to remove the cap (37) as this
can damage the sealing elements of the adjuster. 61
61

6.1.4. Fully wind back the tappet and boot assemblies
(13) by rotating the shear adapter (61) in an anti-clockwise
direction (as viewed from actuator side) (see Section 5.2) –
a clicking noise is generated (see Fig.). 6.1.3 - 6.1.4 - Rewind adjuster using shear adapter

Never turn adjuster (23) without shear adapter (61)
being fitted. If the shear torque of the shear adapter
is exceeded, then it is designed to fail. Try again
with a new (unused) shear adapter. With a second Vehicle -
inboard side
failure of the shear adapter the caliper must be Vehicle-
exchanged since internal damage is present. outboard side
Do not use an open-ended spanner on the shear
adapter! 1
6.1.5. Remove brake pads (12 ) and (12 ) (see Fig.).
2
1
Note: The geometry of the brake pad housing of SK7
disc brakes require the following removal procedure of the
brake pads (12): 12 1
- Pull caliper (1) towards the outboard side.
- Remove outer brake pad (12 ) 12 2
2
- Push caliper (1) to the inboard side.
- Remove inboard brake pad (12 ) 6.1.5 - Remove brake pads
1

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