13 51 630 Replacing fuel pressure regulator (M62, M54)

Follow instructions for fuel pressure testing. See 13 31 ... NOTES ON FUEL PRESSURE CHECK (REFERENCE PRESSURE: ENVIRONMENT)  .

Recycling  The fuel in the fuel lines is under pressure (approx. 3 to 5 bar)! Fuel emerges when the fuel lines are disconnected from the fuel filter. Catch and dispose of escaping fuel. Observe country-specific waste-disposal regulations.

Remove fuel pressure regulator.

Removing fuel tank underbody protection on left: 

Release metal screws (1).

Fig 1: Removing Metal Screws Of Fuel Tank Underbody Protection On Left

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Release screws (2).

Release screws (1) on wheel arch trim, rear left.

Fig 2: Removing Screws On Wheel Arch Trim, Rear Left

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Bend wheel arch trim open.

Fig 3: Bending Wheel Arch Trim

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Release screw (1).

Release screws (1).

Fig 4: Removing Screws

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Release screws (1) and (2).

Fig 5: Removing Screws And Nuts

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Release nuts (3).

Lower fuel tank underbody protection (1) only until access to fuel filter/pressure regulator is unhindered.

Fig 6: Lowering Fuel Tank Underbody Protection

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Installation: 

Check routing of handbrake cable on tank.

If necessary, clip handbrake cable into holders on tank.

Disconnect vacuum hose.

Pull out locking bracket (1) in direction of arrow.

Remove fuel pressure regulator (2).

Fig 7: Removing Fuel Pressure Regulator

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Installation: 

Replace O-rings on fuel pressure regulator (1).

Fig 8: Identifying O-Rings On Fuel Pressure Regulator

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To aid installation, apply a thin coat of petroleum jelly to O-rings(1).