SEAT Workshop Service and Repair Manuals

Secondary shaft: adjustment Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Torque wrench kit -SAT 8010-, see equivalent → Anchor

t	Socket -T20020-, see equivalent → Anchor

t	Kit (case) -U 40200A-, see equivalent → Anchor

t	Kit (case) -U 40300-, see equivalent → Anchor

Adjust the secondary shaft when one of the following elements has been replaced: l  clutch housing l  Output shaft l  Tapered roller bearings for output shaft To avoid unnecessary adjustment work, consult adjustment chart . –  Remove the outer track of the small roller bearing .

–  Install outer track of secondary shaft small roller bearing in clutch casing, with a shim of 0.65 mm thickness. –  Place the secondary shaft in its housing in the clutch casing. –  Tighten the housing nuts to corresponding torque → Item.

–  Install support -T20020- with a comparator on the clutch housing. Locate the end of the dial gauge on the secondary shaft. –  Adjust the dial gauge „0“ with a pre-tension of 1 mm. –  Move secondary shaft alternately in direction of dial gauge. –  Note the reading on the comparator (e.g. 0.30 mm).   Note While measuring do not turn the secondary shaft. The roller bearings settle and falsify the measurement Shim calculation table The designated bearing tension is obtained by adding a constant pressure value (0.2 mm) to the average value (0.3 mm) and the thickness of the shim fitted (0.65 mm). Example:

Shim installed	0.65 mm
+ Average value	0.30 mm
+ Pressure value (const. value)	0.20 mm
Shim thickness needed	1.15 mm

Table of shims

Bearing play = (0.65 mm shim plus determined measured value)	Shim thickness (mm)
0,650 0,660 … 0,689	0,750 0,800
0,690 … 0,739 0,740 … 0,789 0,790 … 0,839	0,850 0,900 0,950
0,840 … 0,889 0,890 … 0,939 0,940 … 0,989	1,000 1,050 1,100
0,990 … 1,039 1,040 … 1,089 1,090 … 1,139	1,150 1,200 1,250
1,140 … 1,189 1,190 … 1,239 1,240 … 1,289	1,300 1,350 1,400
1,290 … 1,339 1,340 … 1,389 1,390 … 1.429	1,450 1,500 1,550

–  Measure the thickness of the shim → Current parts catalogue. The existence of different tolerances allows the exact calibration of the thickness of the shim needed. –  If the thickness needed is greater than those indicated on the table, two shims can be used that add up to the determined value. –  Once the necessary shim has been determined, remove the dial gauge. –  Separate the secondary shaft. –  Remove the outer track of the secondary shaft small roller bearing from the clutch housing. –  Remove the 0.65 mm thick shim from the clutch housing.

–  Fit the small secondary shaft rear bearing outer track with the calculated shim (1.15 mm in the example) in the clutch housing. –  Lubricate the roller bearings with gearbox oil. –  Place the secondary shaft in its housing in the clutch casing. –  Tighten the bolts on the bearing housing to corresponding torque → Item.