Table of Contents
Advertisement
E
THE CLUTCH
Sectioo E.l
ADJUS'IMENT
II is essential
that
the~
should
be a
clearance between
the master cylinder
push-rod
and the
piston when
the
clutch pedal is
released.
This
clearance,
/r
in.
(·8
mm.),
is adjusted by slackening
the locknut
and rotating
the
push-rod in the appropriate
direction.
Ensu~
that
the
pedal is
not
obstructed
by the
toeboard or by
the
floor
covering.
The
free movement
at
the
pedal pad
must
be
sufficient
to
allow
the
ph1on
to
return
fully
in the cylinder
and still retain tbe
/r
in.
(·8
mm.)
clearance at the push-
rod.
E.'cessive movement may
indicate
Jade of
fluid or
the need for bleeding;
whenever
the
system
is
drained,
bleeding will be required after refilling.
Section
E.2
MASTER CYLINDER
Dcscript Min
The
inner
assembly
of
the
master cylinder
is
made up
of the
push-rod,
circlip,
dished
washer,
plunger,
end
seal, plunger
seal,
spring
thimble, plunger
~turn
spring.
valve
Spa«r,
spring
washer, valve stem, and
valve
seal
The open end of
the cylioder
is
protected
by a
•ubber
dust seal
Rmooval
Extntc:t
the
split
pin aod withdraw tbe clevis pin
from
the push-rod
yoke.
Disconnect the
p~u~
pipe union
from
the cylinder
and
~ove
tbe two self-locking nuts,
washers,
and
bolts from the master cylinder mounting
bracket. The
master
eyli.
n der
may now be withdrawn
from
the vehicle.
Dismantlinc
Remove
the retaining
circlip
with a pair
of long-
nosed pliers and extract
the
dished
washer
and
push-
rod.
When
the
push-rod
bas
been removed the plunger
with seals attached will
be exposed
;
remove
the plunger
assembly
complete.
The assembly can
be
separated by
lining
the
thimble leaf over the shooldered end of the
plunser- Depress the plunger
~tum
spring. allowing
the
valve 5lem to slide through
the
elongated hole in the
thimble, thus releasing the tension on the spring.
Remove
the
thimble.
spring.
and
valve
complete.
Detach
the
\'alve
spacer,
taking care
of
the
spacer
spring
washer
which
is
located
under
the
valve bead,
and
remove the
seal from the
valve head.
Examine
aU parts, especially
the
seals,
for
wea.
r or
distonion
and fit
new
parts
where
necessary.
E.4
18
IS
2
0
0
~)g
3
~
•
5
.....
Fig.
£ .3
The
dut~h
mastu
cylindu
ccmponents
I.
Master
cylinder bod_y.
2.
P
lunger.
3.
End
soal.
4.
Plunscr seal.
S.
Spring thimble.
6.
Spriftg.
1.
Val .. -e spaoer.
8.
Spring
wuber.
9.
Valve:
s&em.
Assembly
10.
Vol..:
seal.
11
.
Push-rod.
12..
Retaining washer.
I
3.
Cin:Jip.
14.
Dust
cover.
IS.
Outlet.
I
6. Cap
Wllsbc<.
17. Fillucap.
18.
Air
van.
Replace
the valve
seal
so
that the
Hat side is correctly
seated on the valve
head.
The
spring
washer
should
then
be located
with the
4omed oi<1e against the
UDder
side
of
the
valve bead, and
held in
position
by
the
valve
spacer,
the legs
of
which face towards the valve
seal.
Replace the plunger
return spring centrally
on
the
spacer,
insert the
thimble
into
t
he
spring.
and
depress
until the
valve
stem
engages
through
the
elongated
hole
or
the
thimble, ensuring
that the
stem is correctly
located
in
the centre of the
thimble.
Check
that
the
spring is
still
central on the spacer.
Fit
a new plunger
seal
with the
Hat
face
of the
seal
agJinst the face
of
the plunger. Refit
the
plunger
end
seal, using
a new seal
if
necessary.
Insert the reduced end of
the
plunger into the thimble
untll the
thimble
leaf engages under the
shoulder
of
the
plunger. Press home
the
thimble
leaf.
Smear
the
plunger
assembly
with the recommended
Ouid, and
insert
the assembly
into the
cylinder bore,
val•-.:
"nd
first,
carefully easing the plunger seal lips
into
the bore. Replace the push-rod,
with
the dished side of
the
washer
under
the
spherical
head,
into
the cylinder,
followed
by
the circlip, which engages
io
the
groove
machined in the cylinder body.
Advertisement
Chapters
Table of Contents
