Fuel Injector: Service and Repair

AR07.03-P-6520H Remove/Install Injectors

Shown On The Fuel Injector For Cylinder 7:

Removing/installing

DANGER:
- Risk of injury to skin and eyes suffering scalding from contact with hot coolant spray. Risk of poisoning from swallowing coolant.
- Do not open cooling system unless coolant temperature is below 90 degrees C. Open cap slowly and release the pressure. Do not pour coolant into beverage bottles.
- Wear protective gloves, protective clothing and eye protection.
- Risk of death. Death may result if contact is made with parts carrying high voltages.
- Do not touch parts carrying high voltages.
- Persons who wear electronic implants (e.g. heart pacemakers) must not carry out work on the ignition system.
- Risk of explosion from fuel igniting, risk of poisoning from inhaling and swallowing fuel as well as risk of injury to eyes and skin from contact with fuel.
- No fire, sparks, naked flames or smoking.
- Pour fuels only into suitable and appropriately marked containers.
- Wear protective clothing when handling fuel.
- Risk of explosion from explosive gas. Risk of poisoning and caustic burns from swallowing battery electrolyte. Risk of injury through burns to skin and eyes from battery acid or when handling damaged lead-acid batteries
- No fire, sparks, naked flames or smoking.
- Wear protective gloves, acid-resistant clothing and safety glasses. Pour battery electrolyte only into suitable and appropriately marked containers.
- Risk of injury to fingers being jammed or squeezed when removing and installing or aligning hoods, doors, trunk lid/tailgate or sliding roof.
- When moving components, ensure that no body parts or limbs are within the operating range of moving parts.

1 Open engine hood
2 Remove the fuel distribution rail (1) with fuel injectors
3 Withdraw the anti-twist lock (2) and remove the fuel injector for cylinder 7 (Y62/7) out of the fuel distribution rail (1)
- Inspect the O-ring for damage.
- Replace a fuel injector if the O-ring is faulty.

NOTE: Installation: Oil the fuel injector O-ring before installing. Ensure that anti-twist lock (2) catches in the square lug (arrow) on fuel injection valve (Y627).

4 Install in the reverse order