AIR BY-PASS VALVE CHECK



1.Remove the air bypass valve.
2.Connect the hand vacuum pump to the nipple of the air bypass valve.
3.Apply a negative pressure of approximately 50 kPa, and check that air tightness is maintained.
4.Also check operation of the valve.
Standard value:
Negative pressure
Valve operation
58.8 - 66.8 kPa
It starts opening