Master Cylinder Push Rod

Output Rod Length Check:

BRAKE BOOSTER OUTPUT ROD ADJUSTMENT
1. Supply brake booster with vacuum of -66.7 kPa (-500 mmHg, -19.69 in Hg) using a handy vacuum pump.

2. Check output rod length.

Specified length:
10.275 - 10.525 mm (0.4045 0.4144 in)

BRAKE BOOSTER INPUT ROD ADJUSTMENT

Brake Pedal Adjustment:

Check brake pedal free height from melt sheet. Adjust if necessary.

C1: Clearance between pedal stopper and threaded end of stop lamp switch
0.3 - 1.0 mm (0.012 - 0.039 in)

C2: Clearance between pedal stopper and threaded end of A.S.C.D. switch
0.3 - 1.0 mm (0.012-0.039 in)
A: Pedal free play
1 - 3 mm (0.04 - 0.12 in)

Fig. 8 Adjusting Input Rod:

1. Adjust pedal free height with brake booster input rod. Then tighten lock nut. Make sure that the tip of input rod stays inside.

2. Adjust clearance "C1" and "C2" with stop lamp switch and A.S.C.D. switch respectively. Then tighten lock nuts.

3. Check pedal free play. Make sure that stop lamp is off when pedal is released.

4. Check brake pedal depressed height with engine running. If depressed height is below the specified value, check brake system for leaks, accumulation of air or any damage regarding component parts (master cylinder, wheel cylinder, etc.), and make the necessary repairs.

For additional information see Fundamentals and Basics. Fundamentals and Basics