12
N73B60 Engine - Diagnosis
The Valvetronic motor is rubber mounted at the rear (1 lower left) to isolate it from the cylin-
der head cover. The Valvetronic motor is secured to the bridge support by the intermedi-
ate flange and has a hexagon drive (2 lower left), which engages into the intermediate shaft
(7 lower right).
The intermediate shaft is mounted in the bridge support and is engaged by its spindle in
the eccentric shaft teeth. This design provides ease of removal if the motor/gear fails.
Diagram shown to the right:
1. Eccentric shaft
2. Intake camshaft
3. Mounting for high pressure fuel pump
4. Exhaust camshaft 6. Bridge support
5. Bridge support with receptacle for intermediate 7. Intermediate shaft
shaft and Valvetronic motor
To remove the intermediate shaft, use the spanner tool #90 88 6 11 7 270 to
unthread the locking collar (lower left). If you remove the outer snap ring (as
shown lower right), the tensioning drive washer can be removed along with
the tensioning ring behind it.
KT-9574
KT-9571
11 7 270
