- Remove the thrust bearings (132, 440) from the drive and driven sprockets).
 
- 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.
 | 
 
- 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.
 
- Remove the driven sprocket
support assembly (418-427)
 
- 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.