13 53 240 Replacing complete injection pipe (N62)

Special tools required: 

• 13 5 281

Necessary preliminary tasks: 

• Read out fault memory of DME control unit
• Switch off ignition
• Remove acoustic cover
• E65 only: 

  Remove design cover

• Remove ignition coil covers. See 12 13 511 REPLACING IGNITION COIL (N62)

Unlock plugs (1) on servomotors and disconnect.

Fig 1: Detaching Plug Connections Of Knock Sensors

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Detach plug connections (2) of knock sensors from cable strips.

Unclip cable (3).

Unlock and disconnect following plug connections.

• Fuel rail, left and right, on cable duct
• Throttle-valve assembly
• All solenoid valves
• Both temperature sensors
• Oil-pressure switch
• Tank venting valve
• Alternator
• Differential pressure sensor
• Servomotor on intake air manifold
• Pulse generator on left exhaust and inlet camshafts
• Left eccentric shaft sensor

Unfasten screws.

Fig 2: Removing Brackets

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Remove brackets (4), place cable ducts to one side.

Recycling 

Fuel escapes when fuel line is detached. Catch and dispose of escaping fuel.

Observe country-specific waste-disposal regulations.

Remove protective cap from compressed air connection (1).

Fig 3: Removing Protective Cap From Compressed Air Connection

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Blow fuel back into tank with a short blast of compressed air (max. 3 bar) at compressed air connection (1).

Unfasten screws.

Remove both injection pipes (2) towards top.

Unlock and disconnect fuel hose (1).

Fig 4: Disconnecting Fuel Hose

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Seal fuel hose with special tool 13 5 281.

Fig 5: Sealing Fuel Hose

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Unfasten screws.

Unlock connector and remove.

Fig 6: Unlocking Connector

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Lever out retainers (1).

Fig 7: Removing Fuel Injectors

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Pull fuel injectors out of injection pipe.

Installation: 

Replace sealing rings on fuel injectors and coat with antifriction rubber coating.