Measuring And Adjusting The Output Shaft (Total Shim Thickness S4 And S5)

Information 

• The drive shaft does not need to be disassembled for this adjustment step. 

1. Get ready to take measurements.
   Fig 1: Identifying Output Shaft Shim Locations

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   1. 1.1. Fit adjusting shim S3 -A-  with a thickness of 1 mm.
      Fig 2: Identifying Adjusting Shim S3

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   2. 1.2. Fit tensioning plate with drive shaft.

      → tightening torque: 25 Nm (19 ft. lb.) 

2. Take the measurement.
   1. 2.1. Measure amount of play on the four-point bearing. To do this, fit the dial gauge using special tool Dial Gauge Holder VW 387  . Press the outer bearing ring forward fully and set the dial gauge to 0.
      Fig 3: Measuring Amount Of Play On Four-Point Bearing

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      Information 

      • The measured play plus the specified bearing pretension of 0 to 0.07 mm indicate the thickness of shim S4. 
   2. 2.2. Press outer bearing ring back fully and read off the amount of play on the dial gauge.

      Example:  1.00 mm

      Example:  1.00 mm + 0.05 mm = 1.05 mm = S4

      Example:  S4 = S5 = 1.05 mm

3. Make adjustments.
   1. 3.1. Guide output shaft -A-  with adjusting shim S5 -B-  and adjusting shim

      S4 -C-  into the tensioning plate -E-  .

      Fig 4: Identifying Drive And Output Shafts

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   2. 3.2. Detach fixed gear wheel for 4th gear -D-  on the output shaft. The large collar is facing the tensioning plate.
   3. 3.3. Insert the preselected adjusting shim S3 into the transmission housing and fit the tensioning plates with the shafts.