BMW X5: Removing And Installing/Replacing Right Inlet Camshaft (N62 From 9/03 And N62TU)

Special tools required:

• 11 9 470
• 11 9 472
• 11 9 473
• 11 9 474
• 11 9 475
• 11 9 480
• 11 9 490

(cylinder bank 1 to 4)

Necessary preliminary tasks:

• Remove servomotor for right eccentric shaft.
• Remove ignition coils on cylinder bank 1 to 4.
• Remove right cylinder head cover.
• Remove spark plugs on cylinder bank 1 to 4.
• Remove right inlet and exhaust adjustment units.

IMPORTANT: The inlet camshaft must first be rotated so that when the bearing bracket is removed the intermediate levers do not slip out and damage the camshaft.

Rotate inlet camshaft in direction of rotation until cam on 1st cylinder is positioned horizontally as shown in illustration.

Fig. 237: Locating Camshaft

IMPORTANT: Camshaft bearing caps of cylinders 1 to 4 and 5 to 8 must not be mixed up.

NOTE: Bearing caps of inlet camshaft are marked on cylinder bank 1 to 4 with L E1 to L E5 from inlet side.

Release nuts and remove bearing cap L E1.

Fig. 238: Locating Bearing Cap L E1 And Nuts

Release 8 nuts of bearing bracket (1) from outside to inside.

Fig. 239: Locating Camshaft Bearing Bracket And Nuts

NOTE: Rocker arms are freely accessible after bearing bracket has been removed.

Do "not" remove rocker arm (1) on inlet side.

IMPORTANT: Rocker arms (1) are divided into individual tolerance classes.

Used rocker arms (1) may only be reused in the same position.

When replacing rocker arms (1) on inlet side: install rocker arms of the same tolerance class in the same position.

Fig. 240: Locating Rocker Arms On Inlet Side

Clamp special tool 11 9 470 as illustrated in a vice.

Fig. 241: Identifying Special Tool (11 9 470)

IMPORTANT: Do not tilt bearing bracket (1).

Carefully lift out bearing bracket (1).

Fig. 242: Identifying Bearing Bracket

Place bearing bracket (1) with inlet camshaft and eccentric shaft as illustrated on special tool 11 9 470.

Secure bearing bracket (1) with a nut (special tool 11 9 473 ).

Fig. 243: Identifying Special Tool (11 9 473) And (11 9 470)

IMPORTANT: The lower section of the bearing bracket (1) is machined with the cylinder head and must not be mixed up.

NOTE: Lower section of bearing bracket (1) remains on cylinder head.

Fig. 244: Identifying Lower Section Of Bearing Bracket

NOTE: This work step will only be necessary if after the inlet camshaft has been removed the eccentric shaft is also to be removed.

If necessary, remove eccentric shaft sensor (2).

Fig. 245: Locating Eccentric Shaft Sensor

NOTE: Removal of the intermediate levers and torsion springs is described on the 4th cylinder. The same procedure is applicable to cylinders 1 to 3.

Raise one end of torsion spring (1) with special tool 11 9 480.

Lift out intermediate lever (2) and set down in an orderly fashion.

IMPORTANT: Keep holding torsion spring (1) with special tool 11 9 480.

Fig. 246: Identifying Intermediate Lever And Torsion Spring

Attach special tool 11 9 490 to end of torsion spring.

Support end of torsion spring protected with special tool 11 9 490 on inlet camshaft.

Fig. 247: Identifying Special Tool (11 9 480) And (11 9 490)

IMPORTANT: Intermediate levers (2) are divided into individual tolerance classes.

Used intermediate levers (2) may only be reused in the same position.

Fig. 248: Locating Intermediate Levers

Raise second end of torsion spring (1) with special tool 11 9 480.

Lift out intermediate lever (2) and set down in an orderly fashion.

IMPORTANT: Keep holding torsion spring (1) with special tool 11 9 480.

Fig. 249: Identifying Intermediate Lever, Torsion Spring With Special Tool (11 9 480)

Attach special tool 11 9 490 to second end of torsion spring.

Support end of torsion spring protected with special tool 11 9 490 on inlet camshaft.

Fig. 250: Identifying Special Tool (11 9 480) And (11 9 490)

Release screw (1).

Fig. 251: Identifying Support End Of Torsion Spring

Remove torsion spring (1) and special tool 11 9 490.

Fig. 252: Identifying Torsion Spring With Special Tool (11 9 490)

Remove intermediate levers and torsion springs of cylinders 1 to 3 according to the same procedure and set down in an orderly fashion.

Unscrew nut (special tool 11 9 473 ).

Fig. 253: Identifying Special Tool (11 9 473)

IMPORTANT: Camshaft bearing caps of cylinders 1 to 4 and 5 to 8 must not be mixed up.

NOTE: Bearing caps are marked in graphic with L E2 to L E5.

Remove bearing caps L E2 to L E5 and place to one side in order.

Fig. 254: Identifying Camshaft Bearing Caps Of Cylinders

Lift out inlet camshaft (1).

Fig. 255: Identifying Inlet Camshaft

NOTE: Further tasks: The section Removing and installing right eccentric shaft contains important installation instructions.

If necessary, replace plain compression rings (1).

IMPORTANT: Plain compression rings (1) can easily break.

Plain compression rings (1) are engaged at joint.

Press compression ring (1) on one side into groove, pull up on other side and remove catch.

Carefully pull compression ring (1) apart and remove towards front.

Fig. 256: Pulling Compression Ring

NOTE: Inlet camshaft of cylinder bank 1 to 4 is marked with "EIN 14".

If necessary, replace sensor gear (1).

Release screw (2) and remove sensor gear (1).

Fig. 257: Identifying Sensor Gear And Screw

Installation

Installation of inlet camshaft is described separately from removal.

Clean all bearings and cams of inlet camshaft and lubricate with engine oil.

NOTE: Camshaft has a groove and sensor gear has a lug for fastening purposes.

Fig. 258: Locating Camshaft Groove And Sensor Gear

Fit sensor gear (1) and align to groove in camshaft.

Insert screw (2) and tighten down.

Tightening torque 11 31 14AZ.

Fig. 259: Identifying Sensor Gear And Screw

Installing plain compression rings (1):

IMPORTANT: Plain compression rings (1) can easily break.

Carefully pull compression ring (1) apart and install from front.

Press compression ring (1) on one side into groove, install catch on other side.

Fig. 260: Installing Plain Compression Rings

Insert inlet camshaft (1) so that cams point upwards at 4th cylinder as shown in graphic.

Fig. 261: Locating Inlet Camshaft

Make sure bearing shells (1) of eccentric shaft are engaged in bearing bracket.

NOTE: Bearing shell (1) is guided in a groove in bearing cap.

Fig. 262: Identifying Bearing Shell

Check dowel sleeves (1) for damage and correct installation position.

Fig. 263: Identifying Dowel Sleeves

NOTE: Bearing caps are marked in graphic with L E2 to L E5.

Fit bearing caps L E2 to L E5.

Fig. 264: Identifying Camshaft Bearing Caps Of Cylinders

NOTE: Initially tighten special tool 11 9 473 without play only.

Secure bearing bracket and bearing cap with nut (special tool 11 9 473 ).

Fig. 265: Identifying Special Tool (11 9 473)

NOTE: The mounting of the bearing bracket described later can only be performed if the first bearing of the inlet camshaft is aligned with special tool 11 9 472.

Fit special tool 11 9 472 as shown in graphic and align inlet camshaft.

Fig. 266: Locating Special Tool (11 9 473) And (11 9 472)

Fit centering sleeves (special tool 11 9 475 ) and align special tool 11 9 472 to bearing caps 2 and 3.

Fig. 267: Identifying Special Tool (11 9 475) And (11 9 472)

Insert special tool 11 9 474 and initially tighten without play.

NOTE: Special tools 11 9 472 , 11 9 474 and 11 9 475 remain fitted until all torsion springs and intermediate levers have been installed.

Fig. 268: Identifying Special Tool (11 9 474) And (11 9 472)

NOTE: Installation of the intermediate levers and torsion springs is described on the 4th cylinder.

The same procedure is applicable to cylinders 1 to 3.

Attach special tool 11 9 490 to ends of torsion spring.

Install torsion spring (1).

Fig. 269: Identifying Torsion Spring With Special Tool (11 9 490)

Insert screw (1) and tighten down.

Fig. 270: Identifying Support End Of Torsion Spring

IMPORTANT: Intermediate levers (2) are divided into individual tolerance classes.

Used intermediate levers (2) may only be reused in the same position.

Lubricate all sliding surfaces on intermediate lever (2) with engine oil.

Fig. 271: Locating Intermediate Levers

Raise torsion spring (1) with special tool 11 9 480.

Remove special tool 11 9 490.

Fig. 272: Identifying Special Tool (11 9 480) And (11 9 490)

Hold torsion spring (1) with special tool 11 9 480.

Install intermediate lever (2) from above.

Insert end of torsion spring (1) into guide on intermediate lever (2).

Fig. 273: Identifying Intermediate Lever, Torsion Spring With Special Tool (11 9 480)

Raise second end of torsion spring with special tool 11 9 480.

Remove special tool 11 9 490.

Fig. 274: Identifying Special Tool (11 9 480) And (11 9 490)

Hold torsion spring (1) with special tool 11 9 480.

Install intermediate lever (2) from above.

Insert end of torsion spring (1) into guide on intermediate lever (2).

Fig. 275: Identifying Intermediate Lever And Torsion Spring

Install eccentric shaft sensor (2).

Insert screws and tighten down eccentric shaft sensor (2).

Fig. 276: Locating Eccentric Shaft Sensor

Remove special tool 11 9 474.

Fig. 277: Identifying Special Tool (11 9 474) And (11 9 472)

Remove special tool 11 9 472 and special tool 11 9 475.

Fig. 278: Identifying Special Tool (11 9 474) And (11 9 472)

Ends of compression rings (1) point upwards.

Make sure compression rings (1) are engaged at ends.

Fig. 279: Locating Compression Rings

IMPORTANT: Rocker arms (1) slip slightly when bearing bracket is fitted.

Make sure rocker arms (1) are secured as illustrated on hydraulic valve clearance compensating elements and on valves.

Align rockers (1) straight.

Fig. 280: Identifying Rocker Arms

Remove special tool 11 9 473.

Remove bearing bracket (1) from special tool 11 9 470.

Fig. 281: Identifying Special Tool (11 9 473) And (11 9 470)

IMPORTANT: Do not tilt bearing bracket (1).

Lower bearing bracket (1) from above and carefully bring into contact with cylinder head.

Insert nuts and tighten by hand without play.

IMPORTANT: Make sure none of the intermediate levers or rocker arms have slipped out.

Tighten down nuts from inside to outside.

Tightening torque 11 31 1AZ.

Fig. 282: Locating Camshaft Bearing Bracket And Nuts

IMPORTANT: Camshaft bearing caps of cylinders 1 to 4 and 5 to 8 must not be mixed up.

Fit bearing cap L E1 in such a way that marking is legible from inlet side.

Install nuts and tighten down.

Tightening torque 11 31 1AZ.

Fig. 283: Locating Bearing Cap L E1 And Nuts

Rotate inlet camshaft at hexagon head against direction of rotation until cam on 1st cylinder points downwards at an angle as shown in graphic.

NOTE: The marking (1) on the hexagon drive of the inlet camshaft faces upwards.

Fig. 284: Locating Marking On Hexagon Drive Of Inlet Camshaft

Install inlet and exhaust adjustment unit on right side.

Install spark plugs on cylinder bank 1 to 4.

Install right cylinder head cover.

Install ignition coils on cylinder bank 1 to 4.

Install servomotor for right eccentric shaft.

Assemble engine.

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