Brake Master Cylinder: Service and Repair

MASTER CYLINDER REMOVAL/INSTALLATION
1. Remove in the order indicated in the table.
2. Install in the reverse order of removal.





Master Cylinder Installation Note

Caution
^ If the master cylinder is installed at an angle, the master cylinder piston may push against the push rod retainer of the power brake unit causing poor air bleeding, brake drag, or other malfunctions. Be sure to install the master cylinder at a perpendicular angle to the power brake unit.





1. Install the SST to the power brake unit and tighten to the specified torque.
Tightening torque 13.7-21.6 N-m (1.4-2.2 kgf-m, 10.2-15.9 ft-lbf)





2. Apply a vacuum of 66.7 kPa (500 mmHg, 19.7 inHg) to the power brake unit using a vacuum gauge.

Note
Use any commercially available vacuum gauge.





3. Using calipers, measure dimension L as shown in the figure.
Standard L dimension 30.4-30.6 mm (1.197-1.204 in)





4. If dimension L is not within the standard, remove the SST (49 G043 001) and, while stopping the push rod rotation with the SST (49 E043 003A), adjust the push rod length with the SST (49 B043 004).
5. Switch the SSTs and remeasure dimension L.
6. Install the master cylinder to the power brake unit.