Drive pinion, adjusting: Notes

Special tools and equipment required 

• VW 385/17 End dimension plate
  Fig 1: Special Tool - VW 385/17 End Dimension Plate

  Courtesy of VOLKSWAGEN UNITED STATES, INC.

• VW 387 Universal dial indicator bracket
  Fig 2: Identifying VW 387 Universal Dial Gauge Bracket

  Courtesy of VOLKSWAGEN UNITED STATES, INC.
• Dial indicator gauge

Conditions 

• Supporting ring for drive pinion bearing is installed and secured.
• Parking lock mechanism and parking lock gear are installed.

Adjusting 

Fig 3: Identifying Drive Pinion Shim Location

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Place two shims (each 1.5 mm thick) (arrow) onto drive pinion.
• Place output gear with tapered roller bearing onto drive pinion and tighten hex nut (41 mm AF) to 250 Nm. Engage parking lock when performing this step.

Fig 4: Identifying Special Tools VW 387, VW 385-17 & Dial Indicator Gauge

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Insert dial indicator gauge -A- and zero with a preload of 1 mm. Move drive pinion up and down. Read play at gauge and note (example 0.93 mm).

Determining shims 

The specified bearing preload is achieved if the reading (0.93 mm), the preload of the bearings 0,12 mm and the amount for compression 0,10 mm are subtracted from the 2 x 1.5 mm thick shims.

Example 

• Remove output gear. Determine size of shim on basis of table. Refer to Table of shims for drive pinion and input gear  and fit onto drive pinion.
• Re-install output gear and tighten hex nut to 250 Nm and secure with drift.