Saab 95 1967, Руководство по обслуживанию

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