Remove/install leak oil line to injectors

AR07.03-S-9105SE

Remove/install leak oil line to injectors

18.04.2019

Engine

642 in model 639

Modification notes

11.02.2015

Method modified

Operation steps 2, 3, 5, 6

Shown on ENGINE 642.990

1

Retaining ring

B

Retaining ring not correctly locked

2

Leak oil line

Pfeil

End stop

A

Retaining ring correctly locked

Shown on ENGINE 642.890

2

Leak oil line

3

Latch

 Danger

Risk of explosion caused by fuel igniting. Risk of injury to skin and eyes caused by fuel spraying out at high pressure

Keep all ignition sources out of hazard area.
Do not carry out any work on system when it is pressurized.

AS07.16-Z-0001-01A

 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

Notes about Common-Rail components

AH07.16-P-0002-01TX

 

Remove/install

1

Remove engine cover

AR01.10-S-2405SE

2

Remove trim panel on right cylinder head cover

Engine 642 in model 639

AR01.20-D-5015SF

3

Remove trim panel on left cylinder head cover

Engine 642 in model 639

AR01.20-D-5015SG

4

Remove rail on left cylinder bank

AR07.03-S-1010SE

5.1

Pull retaining ring (1) upwards to unlock

Engine 642.9

 Installation:
The retaining ring (1) must be pressed down to the end stop (arrow).
This prevents the leak oil line (2) from working its way loose.

5.2

Release latch (3) counterclockwise

Engine 642.8

 Installation:
The latch (3) must be turned clockwise up to the end stop.
This prevents the leak oil line (2) from working its way loose.

6

Remove leak oil line (2) from fuel injectors

 Remove leak oil line (2) upward. Close off connections at the fuel injectors. Grommets are available as an replacement part of the fuel injection system; see EPC Group 07.

 Installation: The leak oil line 2) should engage audibly at the connection fittings of the respective fuel injector.

7

Remove leak oil line (2)

 To do this remove leak oil line (2) from return line.



Check

8

Check connection for leak oil line (2) on respective fuel injector and sealing ring for damage

 Replace sealing ring according to findings.

9

Install in the reverse order



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

10

Check for leak tightness with engine running

 Visual inspection only.