Triumph TR2 - Page 414

Dismantling
Disconnect the pressure and feed pipe
unions from the cylinder and remove
the securing bolts and clevis pin from
jaw end.
Pull back the rubber dust
cover and remove the circlip
with a
pair of long nosed pliers. The push rod
and dished washer
can then be re-
moved. When the push rod has been
removed the plunger, with seal at-
tached, will then
be exposed. Remove
the plunger assembly complete. The
assembly
can then be separated by
lifting the thimble leaf over the
shouldered end of the plunger. Ease
the pressure seal off the plunger and
remove back seal. Depress the plunger
return spring allowing the valve stem
to slide through the elongated hole of
the thimble, thus releasing tension of
spring.
Remove thimble, spring and valve
complete. Detach the valve spacer,
taking care of the spacer spring washer
which is located under the valve head.
Remove the seal from the valve head..
Examine all parts, especially the seal,
for wear or distortion, and replace with
new parts where necessary.
Assembling
Replace the valve seal so that the flat
side is correctly seated on the valve
head. The spring washer should then
be located with dome side against the
underside of the valve head, 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 the spring and depress
until the valve stem engages
thro
"S"
the elongated hole of the thimb e,
making sure the stem is correctly
located in the centre of the thimble.
Check that the spring is still central on
the spacer. Refit new plunger
seal on
to the plunger with flat of
seal seated
against the face of lunger, and a new
P back seal with lip o seal facing plunger
seal. Insert the reduced end of
~luneer into the thimble until the
r - ~ ~--
thimble leaf engages under the shoulder
of the plunger. Press home the thimble
- -
leaf.
BRAKES
7 mcc
Smear the assembly well with Girling
brake and clutch fluid, and insert the
assembly into the bore of the cylinder,
valve end first, easing the plunger seal
lips in the bore. Replace the push rod
with the dished side of washer under
the spherical head into the cylinder,
followed by the
circli which engages
into groove machined'in the cylinder
body.
Replace the rubber dust cover, refit
the cylinder to the chassis and bleed
the system.
6. THE CLUTCH SLAVE CYLINDER
(Fig. 6)
The slave cylinder is of simple construc-
tion, consistbg of alloy body, piston
with
seal, piston stop, spring and bleed screw
the open end of the cylinder being protected
by a rubber dust cover. The cylinder is
mounted to the clutch housing by a flange
and two bolts.
(a) Dismantling
Remove the rubber dust cap from the
bleed nipple, attach a
Eeed tube, open
the bleed screw threequarters of a turn
and
urn the dutch pedal until all
the d' uid L been drained. Unscrew
the pressure pipe union and remove
the bolts from the flange. The cylinder
can then be removed.
Remove the rubber cover and piston
stop, then, by using an
air line, blow
out the piston and seal.
The spring
will also be removed.
Examine
all arts, espeaally the seal,
;P
and replace worn or damaged.
(b) Assembling
Place the seal on to the stem of the
piston,
with the back of the seal
against the piston, replace the spring
with small end on stem, smear well
with Girling Crimson Brake and Clutch
Fluid, and
insert into cylinder. Re-
place the piston stop and stretch rubber
dust cover over cylinder. Mount the
cylinder in steel
clip, making sure the
ush
rod enters the hole in the rubber
Lt. Secure the cylinder by the two
bolts, and
screw in the pipe union.