Pontiac Fiero 1988 Service Manual page 222

5-1
S E C T I O N 5
NOTICE: All brake attaching fasteners are important attaching parts in that they could affect the performance of vital parts
and systems, and/or could result in major repair expense. They must be replaced with one of the same part number or with an
equivalent part if replacement becomes necessary. Do not u s e a replacement part of lesser quality or substitute design.
Torque values must be used a s specified during reassembly to assure proper retention of parts.
C A U T I O N : W h e n s e r v i c i n g brake p a r t s , d o not c r e a t e dust by grinding, s a n d i n g brake linings, or by c l e a n i n g brake
parts with a dry b r u s h o r with c o m p r e s s e d air. Many brake parts contain a s b e s t o s fibers w h i c h c a n b e c o m e airborne if
dust i s c r e a t e d during s e r v i c i n g . B r e a t h i n g d u s t containing a s b e s t o s fibers may c a u s e s e r i o u s bodily h a r m . A water
d a m p e n e d cloth or water b a s e d solution s h o u l d b e u s e d to r e m o v e any d u s t o n brake parts. E q u i p m e n t i s c o m m e r -
cially available to perform this w a s h i n g function. T h e s e wet m e t h o d s will prevent a s b e s t o s fibers from b e c o m i n g
airborne.
CONTENTS
G e n e r a l Description 5 - 2
Composite Master Cylinder 5 - 2
Brake Fluid Level Indicator 5 - 2
Operation of Disc B r a k e s 5 - 2
Operation of Combination Valve 5 - 2
Brake Pressure Differential Warning
Switch 5 - 2
D i a g n o s i s a n d I n s p e c t i o n 5 - 2
Brake System Testing 5 - 2
External Conditions That Affect
Brake Performance 5 - 5
Warning Lamp Operation 5 - 5
Brake Fluid L e a k s 5 - 5
Master Cylinder C h e c k 5 - 5
Substandard or Contaminated
Brake Fluid 5 - 5
O n - C a r S e r v i c e 5 - 5
Pedal Travel 5 - 5
Stoplamp Switch Adjustment 5 - 6
Filling Master Cylinder Reservoirs 5 - 6
Bleeding Brake Hydraulic System 5 - 7
Manual Bleeding 5 - 7
Pressure Bleeding 5 - 8
Flushing Brake Hydraulic System . . . 5 - 8
Brake Pipe Replacement 5 - 9
I.S.O. Flare 5 - 9
Brake Hose Inspection 5 - 9
Brake Hose Replacement 5 - 9
Front Brake Hose 5 - 9
Rear Brake Hose 5 - 1 0
Parking Brake 5-11
Parking Brake Control Assembly 5 - 1 2
Parking Brake C a b l e s 5 - 1 2
Parking Brake Front Cable 5 - 1 2
Parking Brake Rear Cable 5 - 1 2
Brake Lining Inspection . 5 - 1 2
Inspecting and Refinishing Rotors 5 - 1 2
Thickness Variation C h e c k . . . 5 - 1 2
Lateral Runout C h e c k 5 - 1 2
Rotor Tolerance and Surface Finish . . . . . . . . . . 5 - 1 4
Refinishing Brake Rotors 5 - 1 4
Combination Valve 5 - 1 4
Testing Combination Valve Electrical Circuit . . . 5 - 1 4
Testing Combination Valve Warning
Lamp Switch 5 - 1 4
Combination Valve Replacement . . . . . . . . . . . . 5 - 1 4
Unit Repair
Composite Master Cylinder 5A3-1
Disc Brake Caliper Assembly
48H Front Caliper . 5 B 4 - 1
Disc Brake Caliper Assembly
48H Rear Caliper 5 B 1 0 - 1
Power Head Assembly — Tandem
Diaphragm 5 D 2 - 1
Specifications and Special Tools 5 F - 1