BMW X5: Replacing Sealing Cover For Vacuum Pump (N52K)

Special tools required:

• 11 4 361
• 11 4 362
• 11 4 363
• 11 4 364
• 11 9 200

Necessary preliminary tasks:

• Remove fan cowl with electric fan
• Remove alternator drive belt
• Remove drive belt tensioner

NOTE: The procedure is the same as for the crankshaft radial seal.

Expose removal openings on sealing cover.

Fig. 72: Locating Openings On Sealing Cover

Convert special tool 11 9 200 (see illustration).

Screw special tool 11 9 200 onto sealing cover.

NOTE: Insert screws until flush only with special tool 11 9 200.

Fig. 73: Special Tool (11 9 200)

Screw in special tool 11 4 362.

Fig. 74: Special Tool (11 4 362)

Attach special tool 11 4 361 to bedplate construction screw connection (see arrow).

Secure with knurled screw (1).

Screw special tool 11 4 364 into special tool 11 9 200 and screw out in direction of arrow.

NOTE: For purposes of clarity, the picture shows the alternator and power steering pump removed.

Fig. 75: Special Tools (11 4 361), (11 4 364) And (11 9 200)

Prepare new sealing cover (1) with special tool 11 9 200 without screws.

Screw in sealing cover with special tool 11 4 363 until it is flush.

Fig. 76: Special Tools (11 9 200) And (11 4 363)

Assemble engine.

REPLACING CRANKSHAFT RADIAL SEAL (TRANSMISSION SIDE) (N52K)

Special tools required:

• 11 9 181
• 11 9 182
• 11 9 183
• 11 9 184
• 11 9 200

Necessary preliminary tasks:

• Remove transmission
• Remove flywheel

NOTE: Crankshaft radial seal has six removal openings for removal with special tool 11 9 200.

Fig. 77: Locating Openings On Sealing Cover

NOTE: If necessary, remove rubber coating (1) on top side of crankshaft radial seal and expose a removal opening (2) (see illustration).

Fig. 78: Rubber Coating And Crankshaft Radial Seal Removal Opening

Fit special tool 11 9 200. Insert sheet metal screws into removal opening of crankshaft radial seal and fasten without play (do not overtighten sheet metal screws).

Screw in spindle (1) slowly and carefully and detach crankshaft radial seal.

Fig. 79: Special Tool (11 9 200)

Installation:

Clean sealing surface (1) and degrease thoroughly in area of housing partition.

Apply a light coat of oil to running surface (2) of crankshaft radial seal.

Fig. 80: Sealing And Running Surface Of Crankshaft Radial Seal

NOTE: Support bushing (4) is contained in scope of delivery of crankshaft radial seal (1).

Crankshaft radial seal (1) has a groove (2) on both left and right sides.

IMPORTANT: After installation, grooves (2) must be filled with sealing compound.

Fig. 81: Bushing, Crankshaft Radial Seal And Grooves

IMPORTANT: The following text describes installation and sealing between the engine block and crankshaft radial seal.

Remove screw caps (1) from injector (2).

Screw on metering needle.

Insert piston for pressing out.

Injector (2) contains the sealing compound Loctite, manufacturer's number 128357.

Bottle (3) contains the primer Loctite, manufacturer's number 171000.

Fig. 82: Screw Caps, Injector And Bottle

Installation:

Fit support bushing (4) with crankshaft radial seal (1) on crankshaft.

Align groove (2) centrally to housing partition (3).

Coat both grooves (2) on crankshaft radial seal (1) with Loctite primer, manufacturer's number 171000, and expose to air for approx. one minute.

Push crankshaft radial seal (1) by hand as far as possible onto running surface.

Carefully remove support sleeve (4).

Fig. 83: Support Bushing, Crankshaft Radial Seal With Groove And Housing Partition

NOTE: Spacer ring (1) is supplied with radial shaft seal.

Screw special tool 11 9 182 with screws (special tool 11 9 184 ) to crankshaft.

Fit spacer ring (1) on preassembled radial shaft seal.

Fig. 84: Special Tools (11 9 184) And (11 9 182)

Draw in radial shaft seal and spacer ring with special tool 11 9 181 in conjunction with special tool 11 9 183.

Then remove spacer ring again.

Fig. 85: Special Tools (11 9 181) And (11 9 183)

Before filling with sealing compound:

Moisten brush with Loctite primer, manufacturer's number 171000. Insert brush as far as possible into grooves (1) on crankshaft radial seal in order to coat housing partition on engine block.

Fig. 86: Grooves On Crankshaft Radial Seal

Using injector, fill both grooves (1) flush with Loctite sealing compound, manufacturer's number 128357.

Fig. 87: Grooves With Loctite Primer

NOTE: Loctite primer, manufacturer's number 171000, binds the Loctite sealing compound, manufacturer's number 128357, and prevents leakage.

Coat surface of sealing compound in both grooves (1) with Loctite primer, manufacturer's number 171000.

Fig. 88: Grooves On Crankshaft Radial Seal

Assemble engine.

READ NEXT: