Body - MG MGA Twin Cam Workshop Manual

Mga series
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THE CLUTCH
E
Fig.
£.4
The master
cylinder.
The arrow indicates
the
thimble
leaf
Replacement
Locate
the
master cylinder
on the
mounting bracket
on
the
bulkhead and
fit
the bolts,
washers,
and
self-
locking n
uts.
Replace
the
rubber dust cover. Line up
the p-.:sh-rod fork with the
hole
in the
clutch
pedal lever,
insert the clevis pin, and secure
it
with a
new
split
pin.
Finally,
bleed the system as
detailed
in Section E.4.
Section E.3
SLAVE
CYLINDER
Description
The slave cylinder
is
of
simple
construction, consisting
of
an alloy body,
piston with seal, spring. and
bleed
screw.
The
open
end is protected by a rubber dust cover.
Two bolts
with
spring
washers secure
the
stave cylinder
to the
clutch housing.
t
2
3
4
5
6
Fig.
£.5
The clutch
sla••
e cylinder components
L
Spring.
4.
Body.
2
..
Seal
5.
Oust
cover.
3.
Piston.
6.
Qrclip.
Remo.-al
Attach
a rubber tube to
the
bleed
screw and
open
the
screw thre""Cluarters of
a
tum.
Pump the clutch pedal
until all
the
fluid bas been
drained
into a clean container.
U
nscrew
the pressure pipe union and remove
the
two
bolts and spring washers securing
the
cylinder to
the
dutch housing. The cylinder
may
now
be removed from
the vehicle,
leaving the
push-rod
attached
to the
clutch
fork.
Dismantling
Remove
the rubber dust cover, and
with
an
air-line
blow
out
the
piston
and
seal.
Extract the
spring. Examine
all
parts, especially
the
seal,
and
renew
if
worn
or
damaged.
Assembly
Place
the seal on
the stem
of the piston
with
the
back
of the
seal
against
the
piston
(sec Fig. E.5). Replace
the spring
with
the
small
end
on the stem,
smear
well
with
the
recommended
ftuid, and
insert into the cylinder.
Replacement
Replace
the rubber dust cover on the cylinder and
locate
the
cylinder in its correct position on the clutch
housing.
ensuring that the push-rod enters the
bole in
tbe
rubber
boot.
Replace the
two mounting bolts and
spring washers.
Refit the
pressure
pipe
union,
taking
care to fit the
copper
washers correctly, and bleed the
system as
described
in
Section EA.
Section
E.4
BLEEDING
THE
CLUfCH SYSfEM
Open the bleed screw on the slave
cylinder
three-
quarters of a turn and attach a tube,
immersing the
open
end
in
a clean receptacle containing a
small
quantity of
the
recommended hydraulic fluid.
Fill
the
master
cylinder reservoir with ftuid. The use
of
Girling
H
ydraulic
Brake Fluid is recommended, but if this is not available
an alternative ftuid conforming to Specilication
S.A.E.
70.Rl should
be used.
Using slow,
full strokes,
pump
the
clutch pedal until the Ouid entering
the
container is
completely free from air bubbles. On a downstroke oftbe
pedal Lighten the bleed screw
and
remove the
bleed
tube.
Section
E.S
REMOVING THE CWTCH
Remove
the gearbox as
detailed in
Section
F.
I.
Loosen each of
the
hexagon
bolts
securing the clutch
to
the
ftywheel
by slackening them
a
tum
at a time until
E.S

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