REMOVAL & INSTALLATION
See Figure 1
Before removing the master cylinder, cover the body surfaces with fender covers and rags to prevent damage to painted surfaces by brake fluid.
- Disconnect the brake lines from the master cylinder.
- Remove the master cylinder-to-vacuum booster attaching bolts and the master cylinder from the vehicle.
- To install, reverse the removal procedures. Bleed the brake system.
See Figures 2 through 10
- Remove the fluid reservoir caps and floats, then, drain the reservoirs.
- Loosen the retaining clamps and remove the reservoirs.
- Remove the primary piston stop bolt.
- Remove the piston retaining clip, washer and the primary piston.
- Wrap a rag around the end of the master cylinder, so that it blocks the bore. Hold your finger over the stop bolt hole and direct a small amount of compressed air into the primary outlet. This should slide the primary piston to the end of the master cylinder bore, so it can be removed.
- Remove the two union caps, washers, check valves and springs.
For overhaul procedures, check the following:
- Clogged orifices in the pistons and cylinder.
- Damage to the reservoir attaching surface.
- Damage to the check valves.
- Wear or damage to the piston cups.
- The clearance between the master cylinder bore and the pistons. The clearance should be 0.020-0.127mm.
To assemble of the master cylinder, reverse the disassembly procedures. Be sure to check the following:
- The check valves and piston cups should be replaced when the master cylinder is assembled, regardless of their condition.
- Apply a thin coat of brake fluid to the pistons before installing. When installing the pistons, push in while rotating to prevent damage to the piston cups.
- Tighten the union cap and stop bolts securely.