Power transmissionSecondary shaft: adjustment
| Secondary shaft: adjustment |
| Check the tool and equipment equivalence table according to the applicability between Seat / VW / Audi / Skoda → Chapter. |
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| Special tools and workshop equipment required |
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| Torque wrench kit -SAT 8010-, see equivalent → Anchor |
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| Bracket -T20020-, see equivalent → Anchor |
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| Kit (case) -U 40200A-, see equivalent → Anchor |
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| Kit (case) -U 40300-, see equivalent → Anchor |
| Adjust the secondary shaft when one of the following elements has been replaced: |
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| Secondary shaft roller bearings |
| To avoid unnecessary adjustment work, consult adjustment chart → Chapter. |
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| Remove the outer track of the small roller bearing → Fig.. |
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| Install outer track of secondary shaft small roller bearing in clutch casing, with a shim of 0.65 mm thickness. |
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| Place the secondary shaft in its housing in the clutch casing. |
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| Tighten the radiator bolts to a torque of 25 Nm + 90º. |
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| Install support -T20020- with a comparator on the clutch housing. Locate the end of the dial gauge on the secondary shaft. |
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| Adjust the dial gauge to “0” with a pre-tension of 1mm. |
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| Move secondary shaft alternately in direction of dial gauge. |
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| Note reading on comparator (e.g. 0.30 mm). |
Note | While measuring do not turn the secondary shaft. The roller bearings settle and falsify the measurement |
| The specified tension for the bearing can be achieved by adding the measured value (0.30 mm) to the thickness of the shim used (0.65 mm) with a constant value for pressure (0.20 mm). |
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| Shim fitted | 0.65 mm |
| + Average value | 0.30 mm |
| + Pressure value (const. value) | 0.20 mm |
| Shim thickness needed | 1.15 mm |
| The shim needed will be determined by the following table: |
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| Adjustment table |
| Thickness (mm) | |
0,65
0,70 | → Parts Catalogue. |
0,75
0,80
0,85 |
0,90
0,95
1,00 |
1,05
1,10
1,15 |
1,20
1,25
1,30 |
1,35
1,40 |
| The assortment of shims available makes it possible to determine exactly the necessary thickness for correct adjustment of the layshaft. |
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| If the thickness needed is greater than those indicated on the table, two shims can be used that add up to the determined value. |
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| Once the necessary shim has been determined, remove the dial gauge. |
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| Separate the secondary shaft. |
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| Remove the small secondary shaft rear bearing outer track from the clutch housing → Fig.. |
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| Remove the 0.65 mm thick shim from the clutch housing. |
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| Fit the small secondary shaft rear bearing outer track with the calculated shim (1.15 mm in the example) in the clutch housing. |
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| Lubricate the roller bearings with gearbox oil. |
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| Place the secondary shaft in its housing in the clutch casing. |
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| Tighten the radiator bolts to a torque of 25 Nm + 90º. |
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01 Transmission
