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Remove/install leak oil line to injectors - AR07.03-P-9105OGR

ENGINE 642 in MODEL 166 

Fig 1: Identifying Leak Oil Line To Injectors Remove/Install Components
G09981604Courtesy of MERCEDES-BENZ USA
REMOVING Remove     
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 contact with 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
1 Remove right and left air filter housing   AR09.10-P-1150OGR
2 Remove soundproofing from left or right cylinder head cover    
3 Turn cover (3) counterclockwise and remove IMPORTANT Turn plug (3) to stop counterclockwise.  
4 Detach the leak oil line (2)    
INSPECT Check     
5 Check connection for leak oil line (2) on fuel injector IMPORTANT Check O-ring for damage; replace if necessary.  
INSTALLING Install     
6 Install leak oil line (2) IMPORTANT The leak oil line 2) should engage audibly at the connection fittings of the fuel injector.  
7 Place plug (3) in position and turn clockwise IMPORTANT Turn plug (3) clockwise to end stop.  
INSPECT Check     
DANGER 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
8 Check leaktightness for a running engine IMPORTANT Visual inspection only.