SEAT Workshop Service and Repair Manuals

(Determining thickness of output shaft shim)

It is necessary to readjust the output shaft when

• ◆ Gearbox housing
• ◆ Clutch housing
• ◆ Output shaft

or

• ◆ Taper roller bearing

have been changed.

Adjustment overview

• ‒ → Press taper roller bearing outer race together with a 1.00 mm thick shim into clutch housing onto stop.
• ‒ Insert output shaft into gearbox housing and fit clutch housing on gearbox housing. Tighten hexagon bolts to 30 Nm.

• ‒ → Fit dial gauge (3 mm measuring range)
  A - 60 mm gauge extension
• ‒ Before taking any measurements rotate output shaft to allow bearing to settle. Set D.T.I. to "O" with 1 mm preload.

Note:

This preparation is to be repeated for each subsequent measurement, otherwise the gauge will not return to the starting position.

• ‒ Press output shaft in direction of arrow using a screwdriver. Read off and note play indicated on D.T.I. (example: 0.33 mm).

Determining thickness of shim

The specified bearing preload is obtained by adding the gauge reading
(0.33 mm) and the thickness of the measurement shim installed
(1.00 mm) to a constant, for preload
(0.12 mm)

Example:

• ‒ → Remove output shaft and pull out small taper roller bearing outer race out of clutch housing.
• ‒ Remove inserted measurement shim (1.00 mm thick) from clutch housing.
• ‒ Determine thickness of shim using table and find Part No. in parts catalogue.
• ‒ Press in taper roller bearing outer race together with the determined shim (in example 1.45 mm) and install output shaft.
• ‒ Checking friction moment => Page 34-105.

Table of "shims":

    1)    To determine shim add gauge reading to measurement shim