Vacuum Pump
WARNING: This page is about a different variant/trim than selected.
| 1 - Vacuum Pump |
| 2 - Vacuum Pump Bolt |
| 3 - Vacuum Pump Studbolt |
- The vacuum pump is a constant displacement, vane-type pump. Vacuum is generated by vanes mounted in the pump rotor. The rotor is located in the pump housing and is pressed onto the pump shaft.
- The vacuum pump operates by a slotted extension attached to the vacuum pump shaft. The vacuum pump shaft slotted extension fits into, and is driven by, the intake camshaft gear.
- The vacuum pump rotating components are internally lubricated and the vacuum pump has no serviceable parts. Do not disassemble or attempt to repair the pump.
OPERATION
- Vacuum pump output is transmitted to the EGR vacuum bypass solenoid and brake vacuum booster, systems through a supply hose. The hose is connected to an outlet port on the pump housing and uses an in-line check valve to retain system vacuum when vehicle is not running.
- Pump output ranges from a minimum of 8.5 to 25 inches vacuum.
- The pump rotor and vanes are rotated by the slotted pump drive gear which fits into the camshaft drive gear.