28146SW-F Electric Brake Vacuum Pump Switch, Relay and Check valve

100% tested
PERFECT FIT - 28146 Vacuum Pump and Relay Switch fit for electric vacuum pump for brake
Inline check valve for proper vacuum draw
Many customers also like to use it for AC Delco (Hella) vacuum pump
WORKING VACUUM RANGE - This switch has range of allowable vacuum(0.065Map-0.067Map),it will turn the pump off at a preset amount of vacuum.??0.065Map-0.067Map?,OFF; ??0.065Map-0.067Map?,ON.
PRESSURE SWITCH AUTOMATIC ADJUSTMENT - To prevent the screw from coming loose in transit, The adjustment screw of the switch has been glued with glue.This range is preset and cannot be adjusted.It will turn the pump off or on at a preset amount of vacuum.
VACUUM PUMP SWITCH FUNCTION - It keeps the pump from constantly running and preserves pump life.Switch controls vacuum pump on/off bu typically uses a pilot relay between the switch contact and the vacuum pump motor.
PLEASE make sure that you ground the switch properly. Bad grounds will cause the unit to malfunction!