SEAT Workshop Service and Repair Manuals

Input shaft: adjustment

Special tools and workshop equipment required

t	Universal dial gauge bracket -T20020-

t	Gearbox extractor set -U-40100-

t	Gearbox repair set -U-40200-

Adjust the input shaft when one of the following elements have been replaced: l  Gearbox casing l  Clutch housing l  Input shaft l  Input shaft roller bearings Refer to Adjustment chart → Chapter

–  Fit the outer track of the input shaft roller bearings into the clutch housing, without the shim. –  Locate the input shaft in its housing in the gearbox casing. –  Fit the clutch housing onto the gearbox casing and tighten the securing bolts to 25 Nm.

–  Fit tool -T20020- on the gearbox casing with a dial gauge. Locate the end of the dial gauge on the input shaft. –  Turn the input shaft to settle the roller bearings. –  Adjust the dial gauge to “0” with a pre-tension of 1 mm.   Note! The adjustment to “0”of the dial gauge must be repeated every time the measurement is carried out. Otherwise the dial gauge will not return to the initial position. –  From the lower end of the gearbox, press the input shaft in the direction of the dial gauge. –  Take note of the meaurement obtained (e.g. 1.21 mm).   Note! The dial gauge does not return to its initial position. –  Determine the thickness of the shim with the table → Anchor. Shim table

Bearing play	Shim
Average value (mm)	Thickness (mm)	N° of spares
0.66 0.67...0.68 0.69...0.70	0.650 0.675 0.700	085 311 391 085 311 391 N 085 311 391 A
0.71...0.73 0.74...0.75 0.76...0.78	0.725 0.750 0.775	085 311 391 P 085 311 391 B 085 311 391 Q
0.79...0.80 0.81...0.82 0.83...0.85	0.800 0.825 0.850	085 311 391 C 085 311 391 R 085 311 391 D
0.86...0.88 0.89...0.90 0.91...0.93	0.875 0.900 0.925	085 311 391 S 085 311 391 E 085 311 391 T
0.94...0.95 0.96...0.98 0.99...1.00	0.950 0.975 1.000	085 311 391 F 085 311 391 AA 085 311 391 G
1.01...1.03 1.04...1.05 1.06...1.08	1.025 1.050 1.075	085 311 391 AB 085 311 391 H 085 311 391 AC
1.09...1.10 1.11...1.13 1.14...1.16	1.100 1.125 1.150	085 311 391 J 085 311 391 AD 085 311 391 K
1.17...1.18 1.19...1.20 1.21...1.23	1.175 1.200 1.225	085 311 391 AE 085 311 391 L 085 311 391 AF
1.24...1.26 1.27...1.28 1.29...1.30	1.250 1.275 1.300	085 311 391 M 085 311 391 AG 085 311 391 AH
1.31...1.33 1.34...1.36 1.37...1.38	1.325 1.350 1.375	085 311 391 AJ 085 311 391 AK 085 311 391 AL
1.39...1.40 1.41...1.43 1.44...1.46	1.400 0.700 + 0.725 0.700 + 0.750	085 311 391 AM 085 311 391 A + P 085 311 391 A + B
1.47...1.48 1.49...1.50 1.51...1.53	0.700 + 0.775 0.700 + 0.800 0.700 + 0.825	085 311 391 A + Q 085 311 391 A + C 085 311 391 A + R
1.54...1.56 1.57...1.58 1.59...1.61	0.700 + 0.850 0.700 + 0.875 0.700 + 0.900	085 311 391 A + D 085 311 391 A + S 085 311 391 A + E
1.62...1.63 1.64...1.66 1.67...1.68 1.69...1.70	0.700 + 0.925 0.700 + 0.950 0.700 + 0.975 0.700 + 1.000	085 311 391 A + T 085 311 391 A + F 085 311 391 A + AA 085 311 391 A + G

–  Separate the input shaft. –  Remove the input shaft outer roller bearing track from the clutch housing → Fig.,

–  Fit the outer track of the roller bearing in the clutch housing with the correct shim (in this case 1.225 mm). –  Locate the input shaft in its housing in the gearbox casing. –  Fit the clutch housing onto the gearbox casing and tighten the securing bolts to 25 Nm. –  Carry out a measurement →  Measurement

–  Fit tool -T20020- on the gearbox casing with a dial gauge. Locate the end of the dial gauge on the input shaft. –  Turn the input shaft to settle the roller bearings. –  Adjust the dial gauge to “0” with a pre-tension of 1 mm. –  From the lower end of the gearbox, pres the input shaft in the direction of the dial gauge. –  The bearing play should be min. 0.01...max. 0.10 mm.   Note! If no play can be measured but the input shaft is free and can turn easily, the adjustment is correct. –  Maximum friction torque: 20 Nm.