Saab 95 1967 Service Manual page 382

MASTER CYLINDER
General
The master cylinder is a cast
and fluid reservoir.
MASTER
CYLINDER, CUT-AWAY VIEW
The cylinder consists of a housing
surface polished bore and with
up to the push rod, cupped
seal, piston seal, spring retainer, piston return spring, valve
spacer, elastic washer, valve
open end of the cylinder is
cap.
When the piston returns to
which affords a seal in the bottom
disengagement opens. When the valve is open the fluid is
able to pass freely from the slave
412—2
unit containing the cylinder
of light alloy with a
an inner assembly, made
washer, lock ring, piston, end
spindle and valve seal. The
protected by a rubber dust
the position of rest, the valve
of the cylinder during
cylinder to the reservoir.
1. Cylinder housing
2. Hose
3. Seal
4. Rod
5. Elastic washer
6. Valve spacer
7. Spring
RemOVal
he hose
1_ Detach t
the fluid into a
2. Separate the pus
' he cotter, the
:19; off and remove the retaining bolts and remove
3_ ac
the master cylinder
DisassembllI
Ease the rubber dust
using long nosed pliers.
push rod and the cupped washer.
rod reveals the piston and
piston assembly. The assembly can be dIsassembled by
|ifting the retainer spring leaf over the tongued end of the
piston. Carefully take the piston seal off the mum and
remove the end seal.
Push down the piston
valve spindle to slide
retainer so that the
taking care not to damage the elastic washer located un-
der the valve head.
Examine the cylinder bore and
ted, and feels smooth to the touch, new seals may safely
be fitted. If, on the
tertained about the condition of the bore, a
should be fitted.
If the old seals are
tamination by mineral
commonest cause
8. Spring retainer
9. Seal
10. Piston
11. Rubber dust cap
12. Push rod with cu
13. Lock ring
14. Clutch pad"
"AB
from the slave cylinder and
clean vessel.
h rod from the clutch pedal
plain washer and the pm'
from the dash panel.
cap back and remove the
It Is now possIble to remove the
Removal of the push
Its seal. Remove the complete
return spring, thus enabling the
through the key shaped
spring lets go. Remove the valve spacer,
Remove the seal from the
if it is not scored
other hand, the slightest doubt
new cylinder
loose on the piston and too
oil may be suspected.
of cylinder trouble, and often
Oped w
uh"
pump out
by remov.
lock ring,
hole in the
valve head.
er distor-
is en-
big, con-
This is the
sufficient