## Conventional Brake Components

#### Brake Booster Pushrod Clearance Adjustment (cont'd)

19-30
Brake Booster Inspection

9. Check the pushrod length (A) as shown if the booster is removed. If the length is incorrect, loosen the pushrod locknut (B) and turn the clevis (C) in or out to adjust.

10. Install the master cylinder (see page 19-18).

Special Tools Required

- Vacuum gauge, 07404-5790301
- Pressure gauge, 07406-5790201
- Attachment, 07410-5790101
- Tube joint adapter, 07410-5790501
- Pressure gauge joint pipe, 07510-6340101

Leak Test

1. Install the vacuum gauge (A) between the brake booster and check valve.

2. Start the engine, adjust the engine speed with the accelerator pedal so that the vacuum gauge readings show 40.0 – 66.7 kPa (300 – 500 mmHg, 11.8 – 19.7 in.Hg), then stop the engine.
3. Read the vacuum gauge.

If the vacuum reading decreases 2.7 kPa (20 mmHg, 0.8 in.Hg) or more after 30 seconds, check following parts for leaks.

- Check valve
- Vacuum hose, pipe
- Seals
- Brake booster
- Master cylinder

NOTE: Do not try to disassemble the brake booster. Replace the brake booster as an assembly with a new one.