Technical Service Bulletin Transmission Jumps Out of 1st or 2nd Gear II

Subject: Transmission Jumps Out Of 1st or 2nd Gear Models: 911 Carrera 1987

Bulletin Number: 88 – 07

G50 Transmission from Model Year 1987

The guide sleeve for 1st and 2nd gear is now coated with a sliding lubricant to prevent the transmission from jumping out of gear.

From production date: August 19, 1987

Transmission numbers:

G5001 1J 01 90

G5001 2J 10672 (limited slip differential)

furthermore, the guide sleeve and shifting sleeve are now only available as a set.

New Part Number:

Guide sleeve with shift sleeve:



In case of complaints of jumping out of gear, always check the shift rod adjustment first.

Refer to Technical Bulletin Group 3, Number 8705, Book D, Page 140

Important Notice: Technical Bulletins are intended only 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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