Clutch Booster
INSPECTION
Hoses and connectors
+Check condition of vacuum hoses and connections.
+Check vacuum hoses and check valve for air tightness.
Vacuum hose check valve
1. Remove the vacuum hose.
2. Blow air through one end (booster side) of the vacuum hose
and make sure that air passage continuity exists.
3. Blow air through the other end (engine side) of the vacuum
hose and make sure that air passage continuity does not exist.
Check valve
1. Remove the vacuum hose.
2. Check the condition of the check valve using a handy vacuum
pump.
V1V2
Vacuum pump connected to the
engine sideVacuum pump connected to the booster
side
No vacuum pressure is applied.Vacuum drop is less than 1.3 kPa (13
mbar, 10 mmHg, 0.39 inHg) at a vacuum
pressure of þ66.7 kPa (þ667 mbar, þ500
mmHg, þ19.69 inHg).
SCL772
SCL782
SCL783
HYDRAULIC CLUTCH CONTROL
CL-9
