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GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 57
Fig. 3: Master cylinder removal
1. Disconnect hydraulic lines at master cylinder.
2. Remove the retaining nuts and lockwasher s that hold cylinder to firewall or
the brake booster. Disconnect pushrod at brake pedal (non-power brakes
only).
3. Remove the master cylinder, gasket and rubber boot.
4. On non-power brakes, position master cylinder on firewall, making sure pushrod goes through the rubber boot in to the piston. Reconnect pushrod
clevis to brake pedal. With power brakes, install the cylinder on the bo\
oster.
5. Install nuts and lockwashers. Torque nut s to 22-30 ft. lbs. (30-45 Nm).
6. Install hydraulic lines t hen check brake pedal free play.
7. Bleed the brakes.
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GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 58
OVERHAUL
Fig. 4: Exploded view of a master cylinder
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GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 59
Fig. 5: Removing the reservoir
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GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 60
Fig. 6: Prying out the snapring
Fig. 7: Removing the snapring
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Fig. 8: Removing the primary piston
Fig. 9: Master cylinder parts
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GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 62
Fig. 10: Removing the O-ring
Fig. 11: Installing the secondary piston
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GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 63
Fig. 12: Installing the primary piston
Fig. 13: Installing the reservoir
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GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 64
This is a tedious, time-consuming job. You
can save yourself a lot of trouble by
buying a rebuilt master cylinder from y our dealer or parts supply house. The
small difference in price between a r ebuilding kit and a rebuilt part usually
makes it more economical, in terms of time and work, to buy the rebuilt part.
1. Remove the reservoir cover and diap hragm. Discard any brake fluid in the
reservoir.
2. Inspect the reservoir cover and diaphr agm for cuts, cracks, or deformation.
Replace any defective parts.
3. Depress the primary pist on and remove the lock ring.
4. Direct compressed air into the outle t at the blind end of the bore and plug
the other outlet to remove primary and secondary piston.
5. Remove the spring retainer and s eals from the secondary piston.
6. Clamp the master cylinder in a vise. Do not clamp it on the master cylinder
body. Use a pry bar to re move the reservoir.
7. Do not attempt to remove the quick take-up valve from the body. This valve
is not serviced separately.
8. Remove the reservoir grommets.
9. Inspect the master cylinder bore for corrosion. If corroded, replace the
master cylinder. Do not use any abrasive on the bore.
10. Reassemble, using new seals and gr ommets. Lubricate all parts with brake
fluid.
11. Install the reservoir grommets.
12. Install the reservoir.
13. Install the spring retainer and seals from the secondary piston.
14. Install primary and secondary piston.
15. Depress the primary pist on and install the lock ring.
16. Fill with brake fluid. Install the reservoir cover and diaphragm.
17. Bleed brake system.