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| Remove Allen keys from the distribution casing and the bolts marked with -arrows-. |
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| Remove distribution chain. |
Note Note that crankshaft bearing bush remains in sealing flange. |
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| Clean sealing surfaces carefully. They must be free of oil and grease. |
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| Screw two stud -M6x80- into cylinder head and cylinder block to improve guidance. |
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| Apply a thin even coat of sealant D 174 003 A2 onto the clean sealing surface. |
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| Fit timing case with crankshaft bearing bush simultaneously onto studs, dowel pins and crankshaft journal. |
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| Tighten valve timing housing securing bolts evenly and diagonally. |
Ensure that timing case is not canted. |
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| Fit the belt pulley with a new fastening bolt. |
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| Tighten the fastening bolt as far as possible by hand. |
Note Ensure that the pulley is not tilted during fitting. |
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| Hold the pulley tight using the counterhold -3415- and -3415/1-. |
Tightening torque: 150 Nm + turn 180° further |
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