S4 V8-4.2L (BHF) (2004)
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Install O-rings - 2 - and secure using grease.
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Insert spur gears - 1 to 3 -.
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Slide dust seal cap - arrow - onto shaft end of spur gear for A/C compressor drive.
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Check whether 2 alignment bushings are present in rear bearing cap, install if necessary.
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Install rear bearing cap and tighten bolts as follows.
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Screw on drive chain gear for power take-off hand-tight.
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Install chain for power take-of
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Tighten drive chain gear for power take-off to 62 Nm.
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Slide power steering pump with new O-ring onto spur gear for power steering pump drive.
The rest of the installation is performed in reverse order of removal. Note the following: