Pontiac Fiero 1988 Service Manual page 228

BRAKES 5-7
MANUAL
1 3
TRANSMISSION
A U T O M A T I C & M A N U A L TRANSMISSION
1 - C L U T C H MASTER
CYLINDER
2 - BRAKE PEDAL
SUPPORT
3 - NUT
4 - DASH PANEL
5 - RETAINER
6 - PUSHROD
7 - WASHER - INBOARD
8 - WASHER - OUTBOARD
9 - BOOSTER
10 - STUD
11 - NUT
12 - RETAINER
13 - BRAKE PEDAL
J 1 0 0 0 6 - 5 - P
Add fluid as required to bring level to approximately 6mm
(1/4 inch) from top of reservoir or within limits identified by
steps on inboard front corner of reservoir. Use Delco
Supreme No. 11 Hydraulic Brake Fluid or equivalent. Fluid
must be "DOT 3."
BLEEDING B R A K E HYDRAULIC S Y S T E M
A bleeding operation is necessary to remove air from the
hydraulic brake system whenever it is introduced into the
hydraulic system.
It may be necessary to bleed the hydraulic system at all
four brakes if air has been introduced through a low fluid
level or by disconnecting brake pipes at the master cylin-
der. If a brake pipe is disconnected at one wheel, only that
wheel caliper needs to be bled. If pipes are disconnected at
any fitting located between master cylinder and brakes,
then the brake system served by the disconnected pipe
must be bled.
Manual Bleeding (Figure 7)
Tool Required:
J 21472 Bleeder Wrench
The time required to bleed the hydraulic system can
be reduced if the master cylinder is filled with fluid and
as much air as possible is expelled before the cylinder is
installed on the vehicle.
Power brakes require removing the vacuum reserve by
applying the brakes several times with the engine off. Care
must be taken to prevent brake fluid from contacting any
painted surface.
1. Fill the master cylinder reservoirs with brake fluid and
keep at least half full of fluid during the bleeding oper-
ation.
2. If the master cylinder is known or suspected to have
air in the bore, then it must be bled before any wheel
cylinder or caliper in the following manner:
a. Disconnect the forward (blind end) brake pipe
connection at the master cylinder.
b. Allow brake fluid to fill the master cylinder bore
until it begins to flow from the forward pipe con-
nector port.
J 2 1 4 7 2
1 - BLEEDER TUBE
2 - TUBE MUST BE
SUBMERGED IN
BRAKE FLUID
J 1 0 0 0 7 - 5 - P
Figure 6 Brake Pedal Mounting Figure 7 Bleeding Brakes (Typical)