13 53 240 Replacing Complete Injection Pipe (N62, N62TU)

Special tools required: 

• 13 5 281 

Necessary preliminary tasks: 

• Read out fault memory of DME control unit; if necessary, work through test schedules
• Switch off ignition
• Remove acoustic cover from engine.
• E65 only: 

  Remove design cover from engine

• Remove ignition coil covers

Unlock plugs (1) on servomotors and disconnect.

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

Unclip cable (3).

Fig 1: Identifying Plugs, Plug Connections And Cable

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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.

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

Fig 2: Locating Screws

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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).

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.

Fig 3: Identifying Air Connection And Injection Pipes

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Unlock and disconnect fuel hose (1).

Fig 4: Identifying Fuel Hose

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Seal fuel hose with special tool 13 5 281  .

Fig 5: Identifying Seal Fuel Hose With Special Tool (13 5 281)

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Unfasten screws.

Unlock connector and remove.

Fig 6: Locating Screws And Connector

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Lever out retainers (1).

Pull fuel injectors out of injection pipe.

Installation: 

Replace sealing rings on fuel injectors and coat with anti-friction agent.

Fig 7: Identifying Retainers

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