The new timing chain tensioner already announced in "New Technical Features 2004.5" will be used in all DOHC-0 engines at the end of MY 2004.
Main characteristics:
- Longer spring to increase spring tension
- Plastic cap on piston floor discontinued
- Changed guide for pinning tool KM-955-1
- New part number: 55 352 909
Comparison between old and new timing chain tensioner
| I | New timing chain tensioner assembly | II | Old timing chain tensioner assembly | ||
|---|---|---|---|---|---|
| 1 | Piston without plastic cap on floor (arrow) | 1 | Piston with plastic cap on floor (arrow) | ||
| 2 | Long spring | 2 | Short spring | ||
| 3 | Chain tensioner housing | 3 | Chain tensioner housing | ||
Inserting the timing chain tensioner with KM-955-1
- Inserting the new timing chain tensioner
- Inserting the old timing chain tensioner
• Service: The new timing chain tensioner can be installed in all 1st and 2nd generation DOHC-0 engines