Remove/install fuel injectors

AR07.03-S-0004EG

Remove/install fuel injectors

06.03.2020

Model

447, 448 with engine 274

1

Sealing ring

2

Sealing ring

3

Sealing ring

Y62

Fuel injectors

 Danger

Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel.

No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only.
Wear protective clothing when handling fuel.

AS47.00-Z-0001-01A

General information on work on gasoline direct injection system

AH07.00-P-2000-01A

 

Remove/install

1

Remove ground line from battery

AR54.10-S-0003E

2

Remove rail

AR07.03-S-1010EG

3

Mark fuel injectors (Y62) relative to the respective cylinder

Only when fuel injectors are to be reused (Y62).

 Installation: When reusing the fuel injectors (Y62) they must be inserted into the cylinder in which it was previously installed.

4

Remove fuel injectors (Y62) from the cylinder head

 Installation:
If fuel injectors (Y62) are replaced, the transport protective caps on the fuel injectors (Y62) should not be removed until one hour before assembly at the earliest.
This prevents leaks.

 Oil, which comes out during the removal of the rail and the fuel injectors (Y62), is safe. The fuel injectors (Y62) can be reused.

 Installation: The fuel injectors (Y62) must be installed together with the rail.

In case of jammed fuel injectors (Y62)



Remove injection nozzles

AR07.03-S-0004-03EG

 Puller

*278589003300



Check

5

Check fuel injectors (Y62) for external damage

 For an appropriate finding, replace fuel injectors (Y62).

6

Replace sealing ring (3) for fuel injectors (Y62)

AR07.03-S-0004-01EG


Fuel injectors (Y62) must be installed immediately after calibration of the sealing rings (3).
The sealing rings (3) swell under the influence of the air humidity and can therefore be damaged during installation.

Assembly cleaner

*BR00.45-Z-1028-04A

 Assembly tool

*272589004300

7

Remove sealing package of fuel injectors (Y62) on rail

AR07.03-S-0004-02EG

Assembly cleaner

*BR00.45-Z-1028-04A

 Drift

*278589011500

8

Replace sealing rings (1) and sealing rings (2) on the fuel injectors (Y62)

9

Install in the reverse order

10

Read out fault memory with diagnostic system and enter injector classification in the ME-SFI [ME] control unit

For installation of new fuel injectors (Y62).



AD00.00-S-2000-04E



Check

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

11

Check for leak tightness with engine running

 Visual inspection only.

Repair materials

Number

Designation

Order number

BR00.45-Z-1028-04A

Assembly cleaner

A 000 986 56 01