Drive/Driven Sprocket and Chain Removal

Drive/Driven Sprocket and Chain Removal





1. Remove the thrust bearings (132, 440) from the drive and driven sprockets).
2. Remove the following parts:

* The drive sprocket and turbine shaft assembly (407-410)
* The driven sprocket (415)

Important: Mark the chain in order to indicate the direction in which you removed the chain.


* Remove the chain (414)

3. Use two screwdrivers in order to hold the driven sprocket in place, and pry off the driven sprocket . Place small blocks of wood or pieces of plastic under the screwdrivers in order to protect the case. Use a plastic hammer in order to tap the drive sprocket and the turbine shaft.




4. Remove the driven sprocket support assembly (418-427)
5. Inspect the scavenge tube case area for a dislodged seal (53) which may have become dislodged from the driven sprocket support assembly (418-427) when the scavenge tube was previously removed.