audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

All Other Service Bulletins for Knock Sensor:|488903|Page 2377 > < All Other Service Bulletins for Knock Sensor:|488903|Page 2375
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connect pressure gauge VW 1441 to hydraulic pump at pressure hose port (arrow)

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start engine and let idle

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check pressure

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145-165 bar (2103-2393 psi)

Note

Do not exceed 10 seconds for the pressure check.

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replace hydraulic pump if results are not within specifications

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proceed with pump resealing procedure if results are within specifications

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remove pump from vehicle

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mark position of both pump housings with punch (lower arrow)

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remove bolts (upper arrows), separate pump housings and remove washer

All Other Service Bulletins for Knock Sensor:|488903|Page 2377 > < All Other Service Bulletins for Knock Sensor:|488903|Page 2375