90 Quattro 20V L5-2309cc 2.3L DOHC (7A) (1990)
Drive Belt: Adjustments
Alternator V-belt, Tensioning
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Remove upper radiator trim.
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Loosen mounting bolts A, B and C (at least one complete turn).
Note: The alternator must be free to swing under its own weight, after the mounting bolts are loosened.
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Tighten v-belt by turning adjusting nut D.
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Tighten to, new belt: 6 Nm (53 in Ib), used belt: 3 Nm (27 in Ib)
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Using torque wrench, then tighten mounting bolt B of adjuster nut
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Check belt tension using thumb pressure.
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new belt: approximately 2 mm (0.08 in.) used belt: approximately 5 mm (0.2 in.)
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Tighten mounting bolts B and C.
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Torque to 35 Nm (26 ft lb)
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Tighten bolt A.
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Torque to 20 Nm (15 ft lb).
Central Hydraulic System Pump,
V-belt Tensioning
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Loosen both bolts 1 and lock nut 2.
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Turn bolt 3 of tensioner as needed.
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Check belt tension using thumb.
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Must deflect approximately 10 mm (0.4 in.)
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Tighten both mounting bolts 1 and lock nut 2.
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Torque to 20 Nm (15 ft Ib)