Master Cylinder Installation Note

WARNING: This page is about a different car, the 2007 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

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.

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}

Fig 1: Identifying Special Tool To Power Brake Unit
Courtesy of MAZDA MOTORS CORP.
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.
Fig 2: Applying Vacuum To Power Brake Unit Using Vacuum Gauge
Courtesy of MAZDA MOTORS CORP.
Using calipers, measure dimension L as shown in Fig 3 .
Standard L dimension

30.4-30.6 mm {1.197-1.204 in}

Fig 3: Measuring Dimension L Using Calipers
Courtesy of MAZDA MOTORS CORP.
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).
Switch the SSTs and remeasure dimension L.

Fig 4: Adjusting Pushrod Length

Courtesy of MAZDA MOTORS CORP.

Install the master cylinder to the power brake unit.