11 41 000 Removing and Installing/Replacing Oil Pump (N63)

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Special Tools Required:

00 9 120 .
11 7 201
11 8 920 .
11 9 280 .
51 0 342
2 213 485 .

IMPORTANT: All Adjusting Procedures On The Chain Drive Must Be Observed.
A Timing Chain Which Is Tensioned Too Tautly Can Cause Noises In The Chain Drive.
A Timing Chain That Is Too Slack Can Cause The Timing Chain To Jump.
Risk of Damage In Oil Pump Drive.

Necessary Preliminary Tasks:

DRAINING ENGINE OIL .
REMOVE Lower Oil Sump Section.

Unscrew Nuts (2).

Tightening torque: 11 41 1 AZ .

Remove Intake Pipe (1).

Installation Note:

Replace O-Ring.

Fig 1: Identifying Screws

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Release All Nuts (1) Using Special Tool 11 7 201.

Tightening torque 11 41 5 AZ .

Remove Oil Pump Drive Gear.

NOTE: Graphic Shows Engine Removed

Fig 2: Releasing Nuts Using Special Tool (11 7 201)

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Unscrew Nuts (1).

Release Screws, Remove Oil Pump (1) with Aid of A Second Person.

Installation Note:

Replace Screws.

Tightening torque 11 41 2AZ .

NOTE: Graphic Without Top Oil Sump

Fig 3: Identifying Oil Pump and Nuts

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Detach Oil Lines (1) Upwards In Direction of Arrow.

NOTE: Graphic Without Top Oil Sump

Fig 4: Detaching Oil Lines

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Installation Note:

Replace Sealing Rings (1).

Lightly Oil Sealing Ring (1).

Coat Sealing Ring (2) with Suitable Lubricant.

Fig 5: Identifying Sealing Rings

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Installation Note:

Replace O-Ring (1) for Oil Feed Line.

Fig 6: Identifying Oil Feed Line O-Ring

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Fit Oil Lines (1) In Direction of Arrow.

Fig 7: Detaching Oil Lines

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Installation Note:

When The Oil Pump Is Replaced, The Oil Deflector (2) Must Be Modified.

Release Screws (1).

Tightening torque: 11 41 6 AZ .

Fig 8: Identifying Oil Deflector and Screws

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Fit Special Tool 11 8 920 On Special Tool 11 9 280 .

Fig 9: Fitting Special Tool 11 8 920 On Special Tool 11 9 280

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IMPORTANT: Left-Hand Thread On Oil Pump Screw Connection.
Do Not Grip Oil Pump Drive with A Pair of Pliers Risk of Damage .

Fig 10: Identifying Oil Pump Screw

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IMPORTANT: Nut (1) Has Left-Hand Thread.

Position Special Tool 11 8 920 On Sprocket.

Slacken Nut (1).

Fig 11: Identifying Special Tools and Sprocket Nut

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Installation Note:

Check Mounting Flats On Pump Shaft (1) for Damage.

Fig 12: Locating Mounting Flats On Pump Shaft

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IMPORTANT: Nut (1) Has Left-Hand Thread.
Grip Pump with Assistance of A Second Person.
Secure Nut (1) with Special Tool 00 9 120 .
Tightening torque: 11 41 4 .

Fig 13: Identifying Oil Pump Screw

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Join and Secure Nuts (1).

Tightening torque 11 41 2 AZ .

NOTE: Graphic Without Top Oil Sump

Fig 14: Identifying Oil Pump and Nuts

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Install Oil Pump Drive Gear.

Secure All Nuts (1) with Special Tool 11 7 201.

Tightening torque 11 41 5 AZ .

Fig 15: Releasing Nuts Using Special Tool (11 7 201)

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Adjust Oil Pump Timing Chain.

Pretension Oil Pump Adjusting Sleeve (1) with A Hexagon Socket Wrench.

Adjustment Value 10 Mm +2 .

NOTE: Graphic Without Top Oil Sump

Fig 16: Pretensioning Oil Pump Adjusting Sleeve with Hexagon Socket Wrench

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Procedure On Removed Engine

Upper Oil Sump Has Been Removed.

Minimally Preload Timing Chain (1) with Special Tool 51 0 342.

Read Off Measured Value A On Special Tool 51 0 342 and Note Down.

IMPORTANT: Do Not Use Force To Preload Timing Chain (1).

Fig 17: Pre-Loading Timing Chain with Special Tool 51 0 362 and Measuring Value "A"

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Using A Screwdriver (1), Preload Timing Chain To Minimal Extent In Direction of Arrow.

Read Off Measured Value B On Special Tool 51 0 342 and Note Down.

IMPORTANT: Do Not Use Force Preload Timing Chain.

Measured Value A Minus Measured Value B Results In The Adjustment Value.

Adjustment Value 10 Mm +2 .

Fig 18: Pre-Loading Timing Chain Using Screwdriver and Measuring Value "B" On Special Tool 51 0 342

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Procedure On Installed Engine

Upper Oil Sump Has Been Installed.

Position Drag Pointer (1) of Special Tool 2 213 485 On Oil Pump Chain.

Fig 19: Positioning Drag Pointer of Special Tool 2 213 485 On Oil Pump Chain

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Installation Note:

Attachment Point (1) N63/S63.

Attachment Point (2) N74.

Fig 20: Identifying Attachment Points

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IMPORTANT: Do Not Use Force Preload Timing Chain.

Push Drag Pointer (1) To The Left and Right Until Value Has Been Determined.

Adjustment Value 10 Mm +2 .

Fig 21: Pushing Drag Pointer To Left and Right

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Adjust Oil Pump Timing Chain.

Pretension Oil Pump Adjusting Sleeve (1) with A Hexagon Socket Wrench.

Adjustment Value 10 Mm +2 .

NOTE: Graphic Without Top Oil Sump

Fig 22: Pretensioning Oil Pump Adjusting Sleeve with Hexagon Socket Wrench

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Join and Secure Screw (2).

Tightening torque 11 41 2 AZ .

NOTE: Graphic Without Top Oil Sump

Fig 23: Identifying Oil Pump and Nuts

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Assemble Engine.