16. 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)

Note: 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.