BMW 7 Series: Removing And Installing/Replacing Roller Chain For Oil Pump Drive (N63)

Special tools required:

• 11 7 201
• 22 13 485

Necessary preliminary tasks:

• Drain engine oil.
• Remove flywheel.
• Remove bottom of oil sump.

NOTE: Support bush (2) is included in delivery specification.

If the crankshaft seal (1) is stored for more than six months without the support sleeve (2), its operational reliability will no longer be guaranteed. Crankshaft seal (1) must not be reused in this case! Support bush (2) remains in the crankshaft seal (1) and is used as a slip bush during described installation described below.

IMPORTANT: The sealing lip of the crankshaft seal (1) is very sensitive and must not be kinked.

Fig. 419: Identifying Radial Shaft Seal

Unscrew nuts (2). Tightening torque: 10 Nm. Remove intake pipe (1).

Installation note: Replace O-ring.

Fig. 420: Identifying Intake Pipe Nut

Release all nuts (1) using special tool 11 7 201. Tightening torque: 10 Nm. Remove oil pump drive gear.

NOTE: Graphic shows engine removed

Fig. 421: Removing Oil Pump Sprocket Wheel Nuts

Unscrew nuts (1). Release screws, remove oil pump (1) with aid of a second person.

Installation note: Replace screws. Tightening torque: 24 Nm

NOTE: Graphic without top oil sump

Fig. 422: Identifying Oil Pump With Nuts

Pull off engine oil line (1) upwards in direction of arrow.

NOTE: Graphic without top oil sump

Fig. 423: Detaching Oil Lines

Installation note: Replace sealing rings (1). Lightly oil sealing ring 1 (1). Coat engine oil pipe (2) with suitable lubricant.

Fig. 424: Identifying Sealing Ring

Installation note: Replace O-ring (1) for oil feed line.

Fig. 425: Identifying O-Ring

Fit engine oil pipe (1) in direction of arrow.

Fig. 426: Detaching Oil Lines

Feed out roller chain (1) via the crankshaft (2).

Fig. 427: Feeding Out Roller Chain

Installation note: Mount new roller chain (1). Install oil pump and adjust.

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. 428: Positioning Drag Pointer Of Special Tool (2 213 485)

Installation note: Attachment point (1) N63O0 / N63O1/S63O0. Attachment point (2) N74.

Fig. 429: Identifying Attachment Points

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. 430: Pushing Drag Pointer To Left

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. 431: Identifying Oil Pump Adjusting Sleeve

Join and secure screw (2). Tightening torque: 24 Nm

NOTE: Graphic without top oil sump

Fig. 432: Identifying Oil Pump With Nuts

Installation note: Check fitting sleeves (1) for damage and correct installation position. Clean sealing surface (2) so that it is free from oil and grease. Coat contact edges on separating face along oil sump (see arrows) with Drei Bond 1209 2.1.

Fig. 433: Identifying dowel sleeves and sealing facex

Installation note: Lightly oil running surface of crankshaft.

Fit end cover (1) with support bush (2) on crankshaft and push on carefully.

NOTE: Graphic shows (N62TU).

Fig. 434: Identifying Support Sleeve And Cover

Insert screws (2) and initially tighten without play. Insert screws (1) and initially tighten without play. Tighten down bolts (2) from inside outwards.

Tightening torque: 10 Nm Tighten down screws (1) from inside outwards.

Tightening torque: 25 Nm.

Fig. 435: Identifying Cover Screws

Assemble engine.

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