Replacement fuel injectors Mercedes-Benz Vito W639

Tools:

• Compressor
• Screwdriver flat medium
• Air blow gun
• Ratchet wrench
• Torx socket T25
• Open-end wrench 10 mm

Parts and consumables:

• Fuel injector 4 pcs. (A 646 070 11 87)
• Fuel injector copper washer 4 pcs. (A 611 017 00 60)
• Fuel injector mounting bolt 4 pcs. (A 000 990 29 07)
• Fuel return pipe O-ring 4 pcs. (if required) (A 000 078 05 80)
• rags
• Copper grease

Note:

In this article, you will learn how to replace injectors on a Mercedes Vito 639 car.

1.  Open the hood as described in this  article .

2.  Remove the air filter housing as described in  this article .

3.  Turn off 6 fastenings and remove a protective casing of fuel atomizers.

The photo shows only two fasteners.

For clarity, the fastenings are shown on the removed casing.

4. Clean the area around the nozzles and the nozzles themselves from dirt and dust, so that when they are removed, dirt does not get into the nozzle seats.

Note:

For cleaning, you can use a compressed air compressor and a clean rag.

5. Remove the fuel return pipe clamps to remove the Mercedes Vito injector.

6.  Wring out a clamp and remove an electric socket from a fuel atomizer.

7. Loosen the high pressure fuel line from the fuel rail a couple of turns.

8. Turn off a bolt of fastening of a fuel atomizer. Move the nozzle holder to the side and pull out the nozzle.

1 - Mounting the fuel injector.

2 - Fuel injector retainer.

Fuel injectors Mercedes Vito. Fuel injector retainer (shown by arrow)

WARNING:

When installing new fuel injectors, use new mounting bolts and copper washers.

New bolts and copper washers

Seats of the copper washer on the fuel injector

9.  Lubricate the fuel injector mounting seat with copper grease and install all removed parts in the reverse order of removal.

The article is missing:

• Tool photo
• Photo of parts and consumables

Source:  http://carpedia.club/