Genuine 1986 Mazda B2000 Clutch Master Cylinder

1986 Mazda B2000 Clutch Master Cylinder Parts and Q&A

• Q: How to remove and install the Clutch Master Cylinder on 1986 Mazda B2000?

  A: To remove and install the master cylinder on all models, first disconnect and plug the fluid outlet line at the outlet fitting on the master cylinder one way valve, then remove the nuts and bolts attaching the master cylinder to the firewall and pull the cylinder straight out. Start the pedal pushrod into the master cylinder and position it on the firewall, followed by installing the attaching nuts and bolts, torquing them to 12-17 ft. lbs. Next, connect the fluid outlet line to the master cylinder fitting, bleed the hydraulic system, and check the clutch pedal free-travel, adjusting as necessary. For the overhaul of models up to 1975, remove the master cylinder, clean the outside thoroughly, drain the fluid, and remove the dust cover. Pry out the piston stop ring, remove the stop washer, and take out the piston, piston cup, and spring. For all models except the 1976-78 B1800, carefully disassemble the one-way valve, clean all parts with clean brake fluid, discard any worn or damaged components, and check the piston-to-bore clearance, replacing the unit if it exceeds 0.15mm (0.0059 in.). If the cylinder bore is lightly scored, it may be honed. Assembly is the reverse of disassembly, ensuring all parts are coated with clean brake fluid, and for 1976-78 B1800 models, confirm that the compensating port is open before filling and bleeding the system. For models from 1986-89, remove the master cylinder, use snapring pliers to press down on the piston and remove the snapring, then take out the piston and various components, blowing out the secondary piston and cup with compressed air while covering the bore opening. Inspect and clean all parts in clean brake fluid, and assemble in reverse order, coating all parts with clean brake fluid. For one-way valve removal and installation, remove the cap from the side of the master cylinder, take out the washer, one-way valve, and spring, and reinstall in reverse order.