Saab 95 1967, Service Manual

Page: 383 / 610

pains are not taken to prevent it. Seals of natural rubber
are highly susceptible, and even minute quantities of oil
can gradually cause considerable swelling. If the slightest
trouble in this respect is suspected, fit new seals through-
out the system and flush the system clean with pure
brake fluid.
Reassemblv
Fit the seal with its flat side properly located on the valve
head. Then put on the elastic washer with its cupped side
facing the lower side of the valve head, retaining it in po-
sition by means of the valve spacer, the legs of which are
turned towards the valve seal. Refit the piston return
spring, centering it on the washer, insert the spring re-
tainer in the spring and press down until the valve spindle
bottoms through the key shaped hole. At the same time,
check that the spindle is correctly located in the middle
of the retainer. Check that the spring is still centered on
the spacer. Fit a new seal on the piston with its flat side
towards the seat of the piston.
Insert the small end of the piston in the retainer until the
retainer spring leaf engages the piston tongue. Press the
retainer leaf fully home.
Lubricate the piston thoroughly with Wakefield/Girling
Rubber Grease 3 and refit the assembly in the cylinder
bore, valve end first, at the same time easing the piston
seal lips slowly into the bore.
Remount the push rod in the cylinder, followed by the
lock ring, placing this in the milled groove in the cylinder
body; Replace the rubber dust cap or, if it is damaged,
fit a new one.
Installation
1. Install the master cylinder in position on the dash pan-
cl.
3. Attach the push rod to the clutch pedal by inserting
the pin through the holes in the push rod fork and the
hole in the clutch pedal. Refit the plain washer and
secure with the cotter.
4. Reconnect the hose.
5. Bleed the system.
SLAVE CYLINDER
General
The slave cylinder is secured to the clutch housing by
means of a screw. The inner assembly comprises the push
rod, lock ring, piston and piston spring. The open end of
the cylinder is protected by a rubber dust cap and a bleed
nipple is located in the bleeder opening.
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SLAVE CYLINDER, CUT-AWAY VIEW
Removal
1. Disconnect the hose and pump out the fluid into a
clean vessel.
2. Back off the retaining screwls) for the cylinder.
3. Separate the cylinder from the push rod and clutch
housing.
Disammbly
Ease the dust cap back and remove the lock ring, using
long nosed pliers. The piston with seal can now be re-
moved, followed by the spring. Examine the cylinder
bore and if it is not scored or distorted, and feels smooth
to the touch, a new seal can be fitted. If, on the other
hand, the slightest doubt is entertained about the con-
dition of the bore, a new cylinder should be fitted.
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