BMW X5 Owners & Service Manuals

BMW X5: Valves With Springs

REMOVING AND INSTALLING/REPLACING ALL VALVES (N52K)

Special tools required:

Necessary preliminary tasks:

  1. Valve
  2. Valve stem seal with lower spring plate
  3. Valve spring
  4. Upper spring plate
  5. Valve tapers

If the valves are to be reused, they must be placed in neat order in special tool 11 4 480.

Valves With Springs
Fig. 209: Upper Spring Plate, Valve Tapers And Spring

Assemble engine.

Check function of DME; if necessary, readjust uniform mixture distribution.

REPLACING ALL VALVE STEM SEALS (N52K)

Special tools required:

Necessary preliminary tasks:

Firmly press special tool 11 1 480 onto old valve stem seals.

Detach valve stem seal from valve stem by turning and simultaneously pulling special tool 11 1 480.

Installation:

Insert all valves.

Valves With Springs
Fig. 210: Special Tool (11 1 480)

NOTE: For use on the N52K engine, special tool 11 6 380 must be remachined according to the picture with a 10 mm dia. drill bit to a depth of B = approx. 23 mm.

This modification has already been taken into account for reordering.

Valves With Springs
Fig. 211: Special Tool (11 6 380) With Dimensions

IMPORTANT: Different diameters at valve stem.

All valve stem seals are color-coded.

For 5 mm dia. valves, the valve stem seal is marked red or brown.

For 6 mm dia. valves, the valve stem seal is marked green or light green.

Valves With Springs
Fig. 212: Valve Stem Seals Color-Coded, Green(Grun), and Red(Rot)

Installation:

Fit the mounting sleeves (plastic sleeves) contained in the delivery specification on the valve stem end.

Lubricate mounting sleeve.

Press on valve stem seal by hand with special tool 11 6 380 as far as it will go.

Valves With Springs
Fig. 213: Special Tool (11 6 380)

Assemble engine.

REPLACING ALL VALVE SPRINGS (N52K)

Special tools required:

Necessary preliminary tasks:

Place cylinder head on special tool 11 9 000.

Press down inlet valves with special tool 11 9 017.

Press down exhaust valves with special tool 11 0 346.

Valves With Springs
Fig. 214: Special Tool (11 9 017) And (11 9 000)

Remove valve cotters with a magnet.

Remove valve spring with spring plates.

If the individual components are to be reused, they must be placed in neat order in special tool 11 4 480.

Valves With Springs
Fig. 215: Removing Valve Cotters With Magnet

IMPORTANT: Incorrect installation possible.

Incorrect installation will result in valve spring breakage.

Risk of mixing up the valve springs for the inlet and exhaust valves.

The valve spring is color-coded (1) at the lower end.

Install the valve spring so that the larger diameter points to the lower spring plate.

Valves With Springs
Fig. 216: Valve Spring Color-Coded

Arrangement:

  1. Valve
  2. Valve stem seal with lower spring plate
  3. Valve spring
  4. Upper spring plate
  5. Valve tapers

Valves With Springs
Fig. 217: Upper Spring Plate, Valve Tapers And Spring

Assemble engine.

Check function of DME; if necessary, readjust uniform mixture distribution.

READ NEXT:

 Variable Valve Gear

 Removing And Installing/Replacing Eccentric Shaft (N52K)

Special tools required: 11 4 481 Necessary preliminary tasks: Remove cylinder head cover Remove intermediate lever If necessary, move eccentric shaft (1) on twin surface to minimum lift (2). F

 Removing And Installing/Replacing Intermediate Levers (N52K)

Special tools required: 11 4 270 11 4 450 11 4 481 IMPORTANT: Aluminium screws/bolts must be replaced each time they are released. The end faces of aluminium screws/bolts are painted blue for t

SEE MORE:

 Window Washer System

OVERVIEW OF WINDSCREEN WIPER, WINDSCREEN WASHER AND HEADLIGHT WASHER SYSTEMS Fig. 289: Overview Of Windscreen Wiper, Windscreen Washer And Headlight Washer Systems Rear window wiper blade Wiper arm for rear window wiper Rear window wiper motor Spray nozzle for rear window washer system Wiper

 Piezo Fuel Injectors

It is the outward-opening piezo-injector that renders possible spray-directed direct injection and thus the overall innovations of the N54 engine. Due to the fact that only this component ensures that the injected fuel spray cone remains stable, even under the prevailing influences of pressure and

© 2019-2024 Copyright www.bmwx5info.com