Pontiac Fiero 1988 Service Manual page 240

COMPOSITE MASTER CYLINDER 5A3-3
Inspect
Master cylinder bore for scoring or corrosion.
If noted, replace master cylinder.
No abrasives should be used in bore.
Clean
• All parts in clean, denatured alcohol.
• Dry with unlubricated compressed air.
Assemble (Figure
5A3-1)
• See NOTICE on page 5-1.
1. Lubricated seals (7 and 9) and spring retainer (8)
onto secondary piston (10).
2. Spring (11), and secondary piston assembly (7
thru 10) into cylinder bore.
• To ease reassembly, lubricate with clean
brake fluid.
3. Lubricated primary piston assembly (6) into
cylinder bore.
4. Retainer (5) while depressing primary piston
assembly (6).
5. Diaphragm (2) into reservoir cover (1) and install
on reservoir (3).
6. Master cylinder (13) as previously described.
3. R E S E R V O I R
12. C Y L I N D E R BODY
16. PRY BAR
Figure 5A3-3 Removing Reservoir
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1 2
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v ^ ^ ^ —
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3. RESERVOIR
4. G R O M M E T
12. C Y L I N D E R B O D Y
HM0005-5A3-BG
Figure 5A3-4 Installing Reservoir
MASTER C Y L I N D E R RESERVOIR
j ^ j Disassemble (Figures 5A3-3,5A3-4)
1. Remove and disassemble master cylinder as
previously described.
2. Clamp flange of master cylinder body (12) in vise.
Important
• Do not clamp on master cylinder body (12).
• Do not remove quick take-up valve from body.
• Valve is not serviceable separately.
3. Reservoir (3) using a pry bar (16).
4. Reservoir grommets (4).
Inspect
Reservoir for cracks or deformation.
Replace if found.
Clean
© Reservoir with clean denatured alcohol.
m Dry with unlubricated compressed air.
Assemble (Figure 5A3-4)
® See NOTICE on page 5-1.
• Lubricate new grommets (4) and reservoir
bayonets with clean brake fluid.
1. Grommets (4) into master cylinder body (12).
• Make sure grommets are properly seated.
2. Reservoir (3) into master cylinder body (12) using
rocking motion.
3. Reassemble master cylinder and install as
previously described.
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