Note: If necessary, check and adjust the clearance between the push rod and piston before installing the master cylinder.
1. Attach the special tool to the master cylinder body; by turning the adjusting nut, move the central axis until it rests against the end of the secondary piston.
2. Without disturbing the position of the central axis, fix the special tool upside down on the amplifier.
3. Install the master cylinder nuts and torque to specification.
4. Connect a vacuum gauge in series with a measuring range of 0-101 kPa (0-760 mmHg) to the engine vacuum source in the booster and keep the engine speed so that a vacuum of 66 kPa is provided (500 mmHg).
5. Use a feeler gauge to measure the gap between the tool body and the adjusting nut as shown. Gap: 0-0.4mm.
Note: If the gap between tool body and adjusting nut is 0.4mm, then the gap between push rod and piston is 0mm. However, if the gap between the tool body and the adjusting nut is 0 mm, then the gap between the push rod and the piston is 0.4 mm or more. Therefore, it should be adjusted and re-checked.
6. If the clearance is not correct, loosen the star locknut and adjust by screwing in or out of the adjuster.
Note:
- Make adjustments while applying the required vacuum to the booster.
- When making the adjustment, fix the pin with the head and the cotter pin hole.
7. Tighten the star locknut securely.
8. Remove the special tool.
9. If the booster is removed, adjust the length of the push rod as shown in the figure.
10. Install the master cylinder (see above).