Appropriate Sequence For Readjusting The Drive Set (Transmission G 86): Notes

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Fig 1: Locating Drive Set Adjusting Shims (Transmission G 86)

Courtesy of PORSCHE OF NORTH AMERICA, INC.

If the output shaft and crown wheel have to be adjusted, it is best to follow the sequence below in the interest of rational working:

Determine the total disc thickness "Stot" (S1 plus S2) for the correct preload of the tapered roller bearings/differentials. See Fig 1 .
Determine the total disc thickness "Stot" (S3 plus S4) for the correct preload of the tapered roller bearings/output shaft. See Fig 1 .
Divide up the total disc thickness "Stot" in S3 and S4 so that the measurement from the crown wheel centre to the front of the drive pinion corresponds to the installation dimension "R" measured during production. See Fig 1 .
Divide up the total disc thickness "Stot" in S1 and S2 so that the stipulated circumferential backlash is present between the crown wheel and output shaft. See Fig 1 .

The aim of the adjustment is to regain the position of maximum smooth running which was determined in production on the testing machine.

The greatest possible care and cleanliness during all assembly work and measuring procedures are essential requirements for a perfect result.