SECTION 4B
MASTER CYLINDER
SPECIFICATIONS
Fastener Tightening Specifications
Application | N•m | Lb-Ft | Lb-In |
Master Cylinder Mounting Nuts | 13 | - | 115 |
Master Cylinder Brake Pipe Fittings | 16 | 12 | - |
MAINTENANCE AND REPAIR
ON-VEHICLE SERVICE
Master Cylinder Assembly
Removal Procedure
- Remove the brake fluid reservior-to-master cylinder pins and remove the resevior from the master cylinder.
- Remove the brake pipe fittings from the master cylinder.
- Plug the brake pipe openings and the brake fluid reservior to prevent brake fluid loss and contamination.
- Remove the master cylinder-to- brake booster nuts.
- Remove the master cylinder-and drain the brake fluid.
Installation Procedure
- Install the master cylinder to the brake booster.
Tighten
Tighten the master cylinder mounting nuts to 13 N•m(115 lb-in).
- Unplug all the openings.
- Install the brake pipe fittings to the master cylinder.
Tighten
Tighten the brake pipe fittings to 16 N•m(12 lb-ft).
- Install the brake pipe fluid reservior-to-master cylinder pins.
- Add the brake fluid.
- Check for leaks.
- Recheck the fluid level.
- Bleed the brake system. Refer to Section 4A, Hydraulic Brakes.
Brake Fluid Reservoir
Removal Procedure
- Remove the brake fluid resevior-to-master cylinder pins and remove the fluid level sensor by pushing the ed of them.
- Remove the reservior from the master cylinder.
- Plug the brake fluid resevior to prevent brake fluid loss and contamination.
Installation Procedure
- Lubricate the new brake fluid reservoir seals withclean brake fluid.
- Install the brake fluid reservoir seals into the mastercylinder body.
- Install the brake fluid reservior to-master cylinder pins and fluid level sensor.
- Add the brake fluid.
- Raise and suitably support the vehicle.
- Bleed the brake system. Refer to Section 4A, Hydraulic Brakes.
- Lower the vehicle.
GENERAL DESCRIPTIONAND SYSTEM OPERATION
Master Cylinder
The master cylinder is designed for use in a diagonally split system. One front and one diagonally opposite rear brakes are served by the primary piston. The opposite front and rear brakes are served by the secondary piston. The master cylinder incorporates the functions of the standard dual master cylinder, plus a low fluid level indicator.
Notice : Do not use lubricated shop air on the brake parts, because oil will damage the rubber components.
- Replace all the components included in the repair kits used to service the master cylinder.
- Lubricate the rubber parts with clean brake fluid toease assembly.
- If any hydraulic component is removed or disconnected, it may be necessary to bleed all or part of the brake system. Refer to Section 4A, Hydraulic Brakes.
- The torque values specified are for dry, unlubricated fasteners.
- Perform all service operations on a clean bench, free from all traces of mineral oil.
Fluid Level Sensor
The mast cylinder reservoir is equipped with a fluid level sensor. The sensor will activate the BRAKE lamp when the fluid level is low. The BRAKE lamp is also activated by the parking brake lever, and it turns on for a bulb test when the ignition is ON and the engine is not running. For diagnosis of the BRAKE lamp, refer to
Section4A, Hydraulic Brakes.
