Installing Fuel Injector

→ Teflon sealing rings must always be replaced after removal and before refitting injectors.

→ Do not replace Teflon sealing rings until just before fitting the injector.

→ Install injector immediately after replacing the Teflon sealing ring.

Information 

The tool numbers refer to the individual parts of the tools in the repair kit T10133  and the supplement set T10133/11-15  (unless indicated otherwise).

Information 

The tightening specifications for the basic engine are stored centrally (→ 1001IN TIGHTENING TORQUES, TIGHTENING SEQUENCES, ASSEMBLY OVERVIEWS ).

Tightening torques and assembly instructions for other assemblies (e.g. chassis, electrics, transmission or body) or for peripheral engine equipment can be found in the corresponding documents.

1. Clean bores for fuel injectors in the cylinder head thoroughly using nylon brush no. 4. Coat brush with acetone or solvent naphtha.
2. Replace damper ring (damping ring for retainer) -1-  and Teflon sealing ring -arrow-  . Replace Teflon sealing ring. Grease damper ring (damping ring for retainer) with Kluber Syntheso GLEP 1.
   Fig 1: Identifying Damper Ring

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   Installation position of Teflon sealing ring: -arrow- 

   Fig 2: Locating Teflon Sealing Ring

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3. Immediately install injector into the cylinder head at the correct installation position according to the retainer (stopping to try it out). The retainer can only be fitted onto the cylinder head in one direction (avoids confusion) -arrows-  . The sides of the twist lock on the injector must be opposite the retainer and must be in as far as they will go -arrows-  . Alternatively, the fuel injectors can be inserted into the retainers in pairs and can be pressed into the cylinder head two at a time when installing several fuel injectors. -arrows- 
   Fig 3: Twisting Injector Lock In Retainer

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   Fig 4: Locating Cylinder Head Retainer Lock

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   1. 3.1. To do this, insert the grease- and oil-free injector into the clean cylinder head bore. Pre-set cable plug alignment.
   2. 3.2. Grease the damping rings using Kluber Syntheso GLEP 1 and press retainer onto the injectors.
   3. 3.3. Screw on retainer (the spring assembly cannot be replaced separately and may only be replaced in its entirety when the retainer has been damaged irreparably). → see Fig 5
      Fig 5: Identifying Retainer For Injectors

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4. Connect cable plugs for injectors. -arrows- 
   Fig 6: Connecting Cable Plugs For Injectors

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