Brake Booster: Notes
CAUTION:
When checking operation, securely apply the hand brake.
NOTE:
Testing without gauges cannot determine the exact portion which has failed, but it can provide a rough understanding of the nature of the failure if checking is conducted in accordance with the following procedures.
NOTE:
When testing with gauges, connect gauges as shown. See Fig 1
. After bleeding air from pressure gauges, proceed to each check.