Technical Bulletin Model
All
Group
20
Subject: Replacement Fuel Pump Check Valve Part Identifier
2067
Number
80-02

Replacement check valves are now available for late model CIS vehicles, eliminating requirements that entire fuel pump be replaced if check valve malfunctions.

New check valve may be installed as of:

911   from VIN 911 920 0885 Coupe
    from VIN 911 921 0893 Targa
    from VIN 930 980 0351 Turbo
924, 924 Turbo   all 1979/1980 vehicles
928   all 1978/1979 vehicles

911, Turbo (911), 928

Parts required:
810 906 093   check valve (incl. copper washer)
N013 8182   copper gasket (2 required)
N011 0691   cap nut

Check valve, replacing

  • Pinch suction hose to pump to prevent fuel spillage.
  • Remove existing discharge hose fitting together with copper washers.
  • Install new check valve using new washers as illustrated.
  • Torque check valve and cap nut to 20 Nm. (14 ft-lbs.)
Warning

Fire hazard! Do not smoke or have anything in area that can ignite fuel. Also disconnect battery ground strap.

  • Remove clamping device used to pinch suction hose.
  • Start engine and check for leaks.

924, 924 Turbo

Parts required:
911 608 951 00   check valve (incl. copper washer)

Check valve, replacing

  • Pinch suction hose to pump to prevent fuel spillage.
  • Remove discharge hose from pump by unscrewing coupling nut.
  • Remove original fuel line adapter from pump and install new check valve as illustrated.
  • Torque check valve to 20 Nm. (14 ft-lbs.)
  • Connect discharge hose to new check valve and torque to 20 Nm. (14 ft-lbs.)
  • Remove clamping device from suction hose.
  • Start engine and check for leaks.
Caution

Part numbers are for reference only. Always check with your Parts Department for latest parts information.

December 23, 1980