6 Front brake disc - inspection,
removal and refitting
2
Note: Before starting work, refer to the
warning at the beginning of Section 3
concerning the dangers of asbestos dust.
Inspection
1 Apply the handbrake, remove the front
wheel trim and slacken the wheel nuts. Jack
up the front of the car and support it on axle
stands. Remove the front roadwheel.
2 Undo the two bolts securing the brake
caliper carrier bracket to the steering knuckle.
3 Withdraw the carrier bracket, complete with
caliper and brake pads, from the disc and
steering knuckle. Tie the caliper assembly
from a convenient place under the wheelarch
to avoid straining the brake hose.
4 Rotate the disc and examine it for deep
scoring or grooving on both sides. Light
scoring is normal, but if excessive the disc
must be renewed.
5 Using a micrometer, measure the disc
thickness at four places around the disc at
about 10.0 mm in from the outer edge (see
illustration). Compare the thickness with the
figures given in the Specifications.
6 If a dial test indicator is available, check the
disc run-out by mounting the indicator with its
probe positioned about 6.0 mm in from the
outer edge of the disc. Rotate the disc slowly,
noting the reading on the indicator. Compare
this with the figures given in the Specifications.
7 If the disc thickness, or thickness variation,
is outside the figures given in the
Specifications, the disc must be renewed. If
the disc run-out is excessive, remove the disc,
turn it through 180º, refit it and check the run-
out once more. If still excessive, renewal of
the disc is necessary.
Removal
8 Remove the brake caliper and carrier
bracket as described in paragraphs 1 to 3.
9 Undo the two retaining screws and
withdraw the disc from the hub flange (see
illustrations). If it is tight, tap it lightly from
behind using a hide or plastic mallet.
Refitting
10 Refitting is a reversal of removal. Ensure
that the mating face of the disc and hub
flange are thoroughly clean, and tighten all
retaining bolts to the specified torque.
7 Rear brake pads - renewal
2
Warning: Disc brake pads must
be renewed on both rear wheels
at the same time - never renew
the pads on only one wheel as
uneven braking may result. Dust created
by wear of the pads may contain asbestos,
which is a health hazard. Never blow it out
9•6 Braking system
7.2a Rear brake pad renewal
1 Pad wear warning light wiring plug (where
fitted)
2 Guide pin bolt
3 Caliper body
4 Brake pad
5 Anti-rattle shim (where fitted)
6 Bleed screw
7 Piston
6.9b . . . and withdraw the disc from the
hub flange
6.9a Undo the two retaining screws
(arrowed) . . .
1380 Rover 800 Series Remake
1 Micrometer
2 Specified disc thickness
3 Dial test indicator
6.5 Checking front brake disc thickness and run-out
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