Pontiac Fiero 1988 Service Manual page 917

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HYDRAULIC CLUTCH
LUTCH SLAVE CYLINDER
1 — BLEEDSCREW DUST COVER*
2 — BLEEDSCREW
3 ~ CYLINDER BOLT
4 — SFR3NS
5 — SEAL*
6 —PLUNGiER
7 — RETAINING RING*
8 —DUST COVER*
9 — RETAINING BAND*
10 —PUSH ROD
•PARTS INCLUDED IN SERVICE KIT
520014-7C
Figure 14 Clutch Slave Cylinder
NOTICE: Replace all serviceable seals and parts
and clean the
remaining parts thoroughly with
denatured alcohol
and place them on to a clean
sheet of paper.
Examine the bore
of the cylinder for visible
scores and ridges and
check that it is smooth to the
•touch.-
If there is the
slightest doubt as to the condition
of the bore or the
plunger, a new cylinder assembly
"must be used. '
Instag or Connect
\, Liberal] y lubricate
seal and piston bore with
unused Delco
Supreme No. 11 Brake and
Clutch
Fluid
or
a
fluid conforming to DOT 3.
2. Insert seal
and piston respectively.
3. Insert push rod
and secure with circlip.
4
Smear bside of
dust cover with Silicone Lubri-
cant Part
Number 5459912 or equivalent and fit.
5. Remount cylinder.
BLEEDING
THE CLUTCH S Y S T E M
The process of removing air from the pipe line
and cylinders is known
as "bleeding" and is necessary
•whenever any part of
the system has been discon-
nected, or- the level of
fluid in the supply tank has
••been allowed to fall so
low that air has been drawn
xnio the master
cylinder.
When seals are worn, it is possible for air to
enter the cylinders without any sign of leaking fluid,
and cause a "spongy" pedal, which is the usual indica-
tion of air bubbles in the system.
NOTICE:
It is vital that extreme cleanliness is
maintained throughout the entire bleeding opera-
tion. Never use a rag of linty texture and ensure
that dirt and grit are not allowed to enter the
system especially at the supply tank.
Preparing for Bleeding
Fill the supply tank directly from a can of
unused Delco Supreme No. 11 Brake Fluid or a fluid
conforming to DOT 3.
NOTICE:
Never, under any circumstances, use
fluid which has been bled from a system to fill the
supply tank as it may be aerated, have too much
moisture content or may possibly be
contaminated.
Ensure that the supply tank is kept full with
fluid as it is essential that at no time during the bleed-
ing operation should the fluid reservoir level be
allowed to fall to a point where air may be admitted
into the hydraulic system via the supply tank.