|
FAULT
|
CAUSE
|
ACTION
|
| Hard pedal—Apparent lack of servo assistance with engine running. |
i Lack of vacuum.
ii Restricted hose.
iii Rubber grommet in flange of iii
vacuum cylinder.
iv Blocked air filter.
v Faulty output piston.
vi Major fault in servo unit. |
i Check vacuum connections
ii Check hose and renew if necessary.
iii Fit new parts from Service Kit.
iv Examine air filter element and renew if necessary.
v Fit new parts from Service Kit.
vi Fit new servo unit.
|
| Brakes hanging on |
i Misaligned vacuum piston.
ii Swollen rubber grommet or piston backing ring. |
i Check as Test No. 5.
ii Fit new parts from Service Kit.
|
| Slow action of servo unit. |
i Swollen rubber grommet in flange of vacuum cylinder.
ii Blocked filter or restricted air ii inlet. |
i Fit new parts from Service Kit.
ii Examine air filter element and renew if necessary.
Renew vacuum hose. |
| Lack of servo assistance on heavy braking. |
Leak in servo vacuum. |
Check for leaks. |
| Loss of fluid. |
i Failure of seal or seals.
ii Scored bore. |
i Fit new parts from Service Kit.
ii Fit new servo unit. |
**
