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Calculating shims for clutch housing > < Dismantling and assembling inner input shaft

Leon Mk1

Notes on gearbox adjustment
Notes on gearbox adjustment
→ Chapter „Calculating shims for clutch housing“
Adjustment work is divided into 2 »sections«:
   
A  - This involves finding shims that are inserted into clutch housing.
q   This is the start of the work. Objective is to align output shafts 1 to 3 in clutch housing »in one imaginary plane«. This »imaginary plane« is defined by face end of outer input shaft. For this procedure, refer to chapter → Chapter.
B  - During assembly of gearbox, »thickness« of these shims determines force with which shafts are »clamped« between both halves. These shims are inserted in gearbox housing.
q   For this procedure, refer to → Chapter
l  Only once correct shims -A- have been calculated for clutch housing, or if there is no need for measurement, can shims -B- be determined.
l  Therefore, do not calculate shims -B- until shims -A- are OK.

l  Work with intact tools, make sure the workplace is clean.
l  Avoid temperature differences between gearbox and adjusting tool.
l  Flange surfaces of both housing halves should be smooth and neither »indented nor damaged«.
l  Do not put on measuring table unless there are guide bushes in housing.
l  Do not swap over bearing races of same size, always renew bearings on a shaft jointly.
l  Follow this procedure step by step. Temperature differences, such as between »summer and winter«, affect all measuring tools that are used.
l  Numbers given in the calculations below are in millimetres. »Your measuring tools« and »dimensions on your gearbox« will differ from the values stated here. These numerical values always have a remark used for identifying -Example-.
l  Notes made during measurements should be legible and easy to follow. Oily pieces of paper are not appropriate for this.
   

Calculating shims for clutch housing > < Dismantling and assembling inner input shaft