Overhaul

WM 137419 Removing and installing sealing ring for vibration balancer on DFI engines

Technical values





Information

Component changes for model year 2009 as of October 2008

Information

Always read the information concerning modified tightening specifications and component changes relating to repairs provided for specific engine numbers in the Information section -> 1001IN IMPORTANT component changes for V8 engines as of October 2008 1001IN IMPORTANT component changes for V8 engines as of October 2008.

Preliminary work

1. Remove vibration balancer. -> 137619 Removing and installing vibration balancer (crankshaft pulley) on 4.8-litre DFI engines - section on "Removing"

Removing sealing ring for vibration balancer

1. Unscrew the four fastening screws and remove the cover with the sealing ring.





Removing cover with sealing ring

2. Clean the sealing surface of the sheetmetal cover.

Installing sealing ring for vibration balancer

WARNING

Risk of damaging the sealing ring due to assembly fault.

- Never pull the sealing ring from the plastic sleeve.
- Do not touch the sealing lip.
- Do not oil the sealing ring on the running surface.

-> Sealing lip can be damaged.

Information

- If the joint flange on the pulley or the surface on the crankshaft stub is slightly rusted, polish the rust off with a special polishing pad.

- If there is bad corrosion or deep grooves, replace these components.

1. Place seal with plastic sleeve across crankshaft.





Seal with plastic sleeve

2. Tighten the two upper fastening screws and then the lower fastening screws by hand. Tighten the screws crosswise to the specified torque (tightening torques -2 and 3- ).





Fastening screws on joint flange (sealing ring)





Chain tensioner, joint flange





3. Pull plastic sleeve straight off the joint flange.





Plastic sleeve

Subsequent work

1. Fit vibration balancer. -> 137619 Removing and installing vibration balancer (crankshaft pulley) on 4.8-litre DFI engines - section on "Installing"