volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Oil Check Valve and Spray Nozzle Valve, Assembly Overview|Page 4504 > < Oil Check Valve and Spray Nozzle Valve, Assembly Overview
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Engine Oil Check Valve: Service and Repair
Oil Check Valve and Spray Nozzle Valve, Removing and Installing

Oil Check Valve and Spray Nozzle Valve, Removing and Installing

Note: 
^

If irregular valve noise occurs repeatedly during short journeys and disappears after extended driving, the oil check valve must be replaced.

Removing 

-

Remove intake manifold.

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Remove bolts - 1, 4, 5, 6, 7 - on high pressure line retaining clamps.

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Disconnect electrical harness connectors at fuel injectors.

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Remove high pressure lines - 2 - and - 9 - from connections on fuel rail.

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Remove high pressure lines - 3 - and - 8 - from connections on fuel rail. To do this, counterhold at hex head with and open-end wrench and loosen
union nut.

-

Remove high pressure lines.

-

Remove bolts - arrows -.

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Remove cover - 2 - with crankcase ventilation hose - 1 -

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Remove seal.

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Remove oil check valve - 1 - and spray nozzle valve - 2 -

Installing 

Installation is in reverse order of removal, note the following:

Oil Check Valve and Spray Nozzle Valve, Assembly Overview|Page 4504 > < Oil Check Valve and Spray Nozzle Valve, Assembly Overview