Technical Service Bulletin Fuel Return Clamp on Additional Air Pump

Subject: Fuel Return Pipe Clamp On Additional Air Pump   Models: 911 Turbo ALL

Bulletin Number: 87 – 07

When working on the additional air injection pump, the position of the fuel return pipe should be checked. (Sketch 1)

Sketch of return img

The clamp for the pipe guide must face toward the center of the pump pulley. (Sketch 2)

Otherwise, there could be contact with the pump pulley. (Sketch 3)

Important Notice: Technical Bulletins are intended for use by professional technicians, not a “Do-it-yourselfer.” They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Special tools may be required to perform certain operations identified in these bulletins. Use of tools and procedures other than those recommended in these bulletins may be detrimental to the safe operation of your vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your Porsche Dealer for information on whether your vehicle may benefit from the information. Part numbers listed in these bulletins are for reference only. Always check with your authorized Porsche dealer to verify correct part numbers.

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