Replacement

REMOVAL AND INSTALLATION





1. Remove in the order indicated in the table.

2. Install in the reverse order of removal.


MASTER CYLINDER INSTALLATION NOTE

Piston to push rod clearance inspection (recessed type)

1. Turn the nut of the SST clockwise to fully retract the SST gauge rod. Attach the SST to the power brake unit.

Tightening torque 9.8 - 15 Nm (1.0 - 1.6 kgf.m, 7.2 - 11 ft. lbs.)





2. Apply 66.7 kPa (500 mmHg, 19.7 inHg) vacuum by using a vacuum pump.





3. Turn the adjusting nut of the SST counterclockwise until the gauge rod just contacts the push rod end of the power brake unit. Push lightly on the end of the gauge rod to be sure it is seated. Verify that there is no gap between the adjusting nut and SST body.

4. Remove the SST from the power brake unit without disturbing the adjusting nut. Set the SST onto the master cylinder as shown in the figure.








5. Push lightly on the end of the SST gauge rod to be sure it is bottomed in the master cylinder piston, but do not push so hard that the piston moves. Note any clearance between the SST body and the adjusting nut (clearance B) or between the body and the master cylinder (clearance C). Adjust the push rod as necessary as outlined in "Adjustment" below.


Piston to push rod clearance adjustment (recessed type)

- The threads of the push rod are specially designed so that the bolt becomes harder to turn past a certain point. This is to prevent the bolt from coming loose. Turn the bolt only within this range when adjusting.

1. Adjustment of clearance at B





(1) Push lightly on the end of the SST gauge rod, and measure the clearance between the adjusting nut and the SST body.





(2) Using the SSTs, turn the nut to lengthen the power brake unit push rod to an amount equal to the clearance measured at B.

2. Adjustment of clearance at C





(1) Measure and record height D1 of the gauge rod.
(2) Turn the adjusting nut until the SST body sets squarely on the master cylinder. (Turn only enough for the body to touch.)





(3) Measure and record height D2 of the gauge rod.





(4) Subtract D1 from D2, then using the SST, turn the nut to shorten the power brake unit push rod an amount equal to the sum.





NOTE:
- This adjustment produces the illustrated clearance.


Piston to push rod clearance inspection (standard type)





1. Place the SST atop the master cylinder. Turn the adjusting bolt until it bottoms in the push rod hole in the piston.





2. Apply 66.7 kPa (500 mmHg, 19.7 inHg) vacuum to the power brake unit with a vacuum pump.

3. Invert the adjustment gauge used in step 1 and place it on the power brake unit.





4. Measure the clearance between the end of the gauge and the push rod of power brake unit.

5. Adjust it to the piston to push rod clearance as necessary.


Piston to push rod clearance adjustment (standard type)








- Loosen the push rod locknut and turn the push rod to make the adjustment.