Vacuum Lines

VACUUM LINES

Exploded View BR-21:

Removal and Installation

CAUTION:
^ Because vacuum hose contains a check valve, it must be installed in the correct orientation. Refer to the stamp or label to confirm correct installation. Brake booster will not operate normally if hose is installed in the wrong direction.

^ Insert vacuum hose at least 24 mm (0.94 in).
^ Never use lubricating oil during assembly.

Inspection
VISUAL INSPECTION
Check for improper assembly, damage and aging.

CHECK VALVE INSPECTION

Airtightness Inspection





Use a handy vacuum pump to check.
When connected to booster side (1):
Vacuum decrease should be within 1.3 kPa (10 mmHg, 0.39 inHg) for 15 seconds under a vacuum of -66.7 kPa (-500 mmHg, -19.69 inHg)
When connected to engine side (2): No vacuum will be applied
Replace vacuum hose with the check valve as a set if damage or deformation is present at the vacuum hose.