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5-14
GROUP
5-DRIVE LINE AND CLUTCH
EJ
IN CAR ADJUSTMENTS AND REPAIRS
The maintenance required for the
clutch system. is to top-up
the master
cylinder, and, if necessary, to
bleed
the system. Details of these
opera-
tions are given in
the
following
paragraphs.
No manual adjustment is
possible
or
provided for on any
of the clutch
systems.
RESERVOIR TOPPING-UP
The fluid
level
in the reservoir
tank, which is integral with
the
clutch master cylinder body, should
be regularly checked.
Top up to
the correct
level, marked on the
master cylinder
body
with approved
fluid. The cap
and
the area sur-
rounding it should
be
wiped
with
a
clean rag
before removing the cap,
to prevent dirt entering when
it is
removed.
Ensure that the air vent
in the
cap is clear
before replacing the cap.
BLEEDING THE CLUTCH
If
it is suspected
that an incorrect
fluid
has been used
in the
hydraulic
system, drain
completely and flush
out with methylated
spirit
or com-
mercial alcohol.
Renew
the piston seals
in the
master cylinder and slave cylinder
as outlined in Page 5-19 and refill
the system with fluid, Rl-39 A.
Engine, transmission or other
mineral oils must not be used in the
system or allowed to come into
contact with seals, pistons, etc.,
being stored. Foreign matter must
be avoided since it may score the
pistons or damage the seals and
render the clutch wholly or partially
inoperative.
When replacing clutch system
parts, examine the seals and any seal
which is imperfect should be re-
placed. Pistons and housings should
be checked for scores which may
provide a track for fluid leaks under
pressure and any damaged parts
must be renewed.
Prior to assembly, immerse hy-
draulic components in clean fluid,
Rl-39
A
to facilitate fitting and
provide initial lubrication for work-
ing surfaces.
1.
Clean the area surrounding
the bleed valve on the
cylinder.
2.
Fit a suitable tube on the
bleed valve and place the
end
of the
tube in a bottle
containing
fluid,
Rl-39 A. Keep the end of the tube
beneath the
surface
of the fluid
throughout the bleeding operation.
3. Open the bleed valve by turn-
EJ
REMOVAL AND INSTALLATION
CLUTCH MASTER CYLINDER
REMOVAL
1.
Disconnect the clutch master
cylinder push rod from
the pedal.
2.
Detach the fluid line
by un-
screwing the union
nut, using
a
blanking plug to
prevent dirt
enter-
ing the line.
3. Withdraw the
master
cylinder
after removing the
two nuts and
spring washers securing
the master
cylinder
to the bulkhead.
INSTALLATION
l.
Refit
the master cylinder
to
the engine bulkhead,
replace the
two securing spring washers
and
nuts and
tighten
to
the
specified
torque.
2.
Reconnect
the fluid
pipe,
tighten the union nut securely,
but
do not overtighten.
3.
Reconnect the clutch master
cylinder push rod to the pedal by
passing the push rod eye over the
pedal pin, refitting the shouldered
nylon bush and keeper pin.
4.
Top up the master cylinder
reservoir with clean approved fluid,
Rl-39 A, and then bleed the system.
Check the
action~
of the clutch on
road test.
THE CLUTCH SLAVE
CYLINDER REMOVAL
The clutch
slave
cylinder is
mounted on the clutch housing on
the left-hand side,
and
is retained
by two bolts.
1.
Detach the fluid line by un-
screwing
the union nut, using a
ing it anti-clockwise and
slowly
depress
and
release the clutch pedal
several times. For each
stroke
some
fluid or
air should
be pumped out
of
the tube. If neither fluid nor
air
is
pumped out, the bleed valve
is
not
properly opened or there
is
a block-
age in the pipe line.
NOTE: Where air in the system is
suspected remember that when bleed-
ing the
system
the initial application
of the clutch pedal will cause the air
trapped in the bleed tube to be forced
into the fluid container.
4.
Continue depressing and re-
leasing the clutch pedal slowly until
no more air bubbles emerge from the
rube, ensuring that the fluid level in
the reservoir is maintained during
the bleeding operation.
Do not replenish the reservoir
with the fluid drained from the
system as it may be aerated or
con-
taminated. If the fluid pumped out
of the tube is dirty, drain the system
completely and refill with fresh
Rl-39 A.
5.
Close the bleed valve tightly
with the pedal fully released, when
fluid alone comes out of the bleed
tube with each stroke of the clutch
pedal.
6.
Refill the reservoir to the
correct level and refit the cap.
blanking plug to prevent dirt enter-
ing the line.
2.
Remove
the slave
cylinder
after removing the two retaining
bolts.
INSTALLATION
1.
Fit the
rubber
boot to the
operating
cylinder and insert
the
push rod.
2.
Position the
slave
cylinder
on to the flywheel housing
and
fit
the retaining lock washers
and
bolts. Torque the bolts to
speci-
fication.
3.
Reconnect the fluid tube.
Tighten the union nut, but do not
overtighten. Bleed the
system.
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