Opel 1900 1973 Service Manual page 275

i973 OPEL SERVICE MANUAL
Figure 56-24 Removing Dowel Pins
Figure 56-25 Removing
4.
Check rubber seals for wear. If rubber seals are
hardened, brittle or cracked, they must be replaced
as follows:
(a) Remove brake caliper from steering knuckle and
brake disc. Leave hose attached to brake caliper.
(b) Remove seal clamp rings with screwdriver and
remove seal rings from calipers. See Figure 5B-26.
(c) Install new rubber seals and clamp rings. Make
sure rubber seal is properly seated. Make sure clamp
ring is correctly positioned on rubber seal,
Friction Pads
Figure 56-26 Removing or
Clamp
(d) Attach brake caliper to steering knuckle and
torque bolts to 72 Ib.ft.
caliper, make sure contacting surfaces of both caliper
and steering knuckle are perfectly clean and free of
any burrs.
CAUTION: This disc brake caliper
affect the performance of vital components and sys-
tems, and/or could result in major repair expense. It
must be replaced with one of the same part number
or with an equivalent part, if replacement becomes
necessary. Do not use a replacement part of lesser
quality or substitute design. Torque values must be
used as specified during reassembly to assure proper
retention of this part.
5. Before installing new friction pads, press both pis-
tons of each caliper to bottom of their bores, using
J-22430.
Return Clamp
bores, open caliper bleeder valve to prevent excess
brake fluid from overflowing master cylinder con-
tainer
As soon as pistons are bottomed, tighten
bleeder valve.
6. Check brake disc for lateral runout.
7. Install new friction pads into brake caliper.
tion pads must be free enough to be easily moved in
their caliper recesses. See
If new friction pads are not free, it will be necessary
to remove pads and clean recesses and recess corners
with a wooden spatula and then with denatured al-
cohol and a brush. After cleaning, blow out recesses
with compressed air. Remove any high spots on
edges of friction pads contacting caliper recesses with
Installing Rubber Seal
Ring
Prior to installation of
attachments fas-
While pressing piston into
Fric-
Figure X3-25.