Audi Workshop Service and Repair Manuals

Adjusting input shaft (Determining thickness of circlips for input shaft) Special tools and workshop equipment required

t  Press tool -30 - 100-

t  Distance gauge -3167- t  Depth gauge The input shaft must be readjusted if the gearbox housing, the input shaft or the ball bearing have been renewed.

–  Clamp input shaft in vice using jaw covers -A-. –  Place distance gauge -3167- onto 3rd speed selector gear. –  Place gearbox housing over input shaft and onto distance gauge.

–  Apply depth gauge to gearbox housing and measure down to the lower circlip groove in the input shaft. t  Measurement in the following example: -a- = 28.50 mm

–  Apply depth gauge to gearbox housing and measure down to seating surface for ball bearing. t  Measurement in the following example: -b- = 26.80 mm Determining thickness for circlip x behind input shaft ball bearing Formula: “x” = distance “a” – distance “b”

Example:
	Dimension “a”	28.50 mm
–	Dimension “b”	26.80 mm
=	Dimension “x” (thickness of circlip)	1.70 mm

–  Select circlip from table. For Part Nos. refer to → Electronic parts catalogue. Circlips available

Dimension “x”	Thickness (mm)
1.48…1.56	1.54
1.57…1.65	1.63
1.66…1.74	1.72
1.75…1.83	1.81
1.84…1.92	1.90
1.93…2.01	1.99
2.02…2.10	2.08
2.11…2.20	2.17
2.21…2.27	2.25
2.28…2.35	2.33

Determining thickness for circlip in front of input shaft ball bearing –  Knock rear circlip (as determined) and ball bearing onto input shaft using drift sleeve -30-100-.

–  Determine the thickest circlip which will still fit. –  Determine circlip as accurately as possible from table. For Part Nos. refer to → Electronic parts catalogue. Circlips available

Circlip thickness (mm)
1.45	1.72	1.99
1.54	1.81	2.08
1.63	1.90	2.17