the pistons and puts the pads in slight
friction contact with the disc.
4. Refit the road wheels, remove the
car from the jack and road test
carefully.
Rear Brake Drums
The hydraulic brake drums fitted to
the rear wheels are self adjusting.
They should be inspected and
checked every 5,000 miles (8,000km)
or before if the brake pedal has
excessive free movement.
Rear Brake Shoe Replacement
1. Jack up car and remove rear road
wheels, be sure the front wheels are
chocked so the car will not move.
2. Remove retaining bolts from the
drum and lift the drum over the hub.
3. Carefully remove the top two
springs using pliers. Be careful not to
bend the spring.
4. Remove the round retaining clips
and the linings.
5. Clean the back plate and check the
wheel cylinder for leaks and
movement.
6. Clean and examine the self
adjusting system.
7. To refit the new shoes, fit the
bottom spring and the shoes to the
back plate, re-attach the shoes to the
wheel cylinder and adjuster. Finally
refit the top springs.
8. Replace the drum with the adjuster
set so the drum will just fit and
replace the retaining bolts.
9. Refit the road wheels, lower the car
and road test; the adjustment should
be corrected in use.
The Handbrake
Adjustment of the rear brake shoes
automatically re-adjusts the
handbrake mechanism. The cables are
correctly set before leaving the works
and only maladjustment will result
from tampering with the mechanism.
Cable adjustment may be made by
turning the adjuster at the rear of the
handbrake cable.
Bleeding the System
Except for periodical inspection of the
fluid level in the reservoir chamber
and lubrication of the handbrake
cables and connections, no attention
should be necessary. If, however, a
pipe joint is uncoupled at any time, or
the wheel cylinder cups are inspected
or replaced, the system must be bled
in order to expel any air which may
have been admitted.
Air is compressable, and its presence
in the system will affect the working
of the brakes.
1. Wipe clean the bleeder nipple of
the brake concerned and fit a piece of
rubber tube over it, allowing the tube
to hang in a clean container partially
filled with fluid, so that the end of the
pipe is below the level of the fluid.
2. Unscrew the bleeder nipple one
complete turn with a suitable spanner.
There is only one bleeder nipple to
each wheel.
3. The fluid reservoir of the master
cylinder must be topped up before
commencing the bleeding operation,
and must be kept at least half filled
during the whole operation, otherwise
more air will be drawn into the system
via the master cylinder. Always clean
the area around the screwed cap
before removing it, this will lessen the
risk of grit falling into the chamber
after removal.
4. Depress the brake pedal quickly
and allow it to return without
assistance. Repeat this pumping
operation with a slight pause between
each depression of the pedal. Observe
the flow of fluid being discharged into
the glass jar and when all air bubbles
26
Plus 8 4.0
Routine
Maintenance
Routine Maintenance
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