Declination gear assembly
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This pic shows the Dec. motor and belt assembly.
This picture shows the main Declination shaft, gear,  and worm assembly 
The Dec.worm assy is mounted to a backing plate with slotted holes that alow the worm to slide to and away from the main gear
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The clutch assembly is a nut welded to a curved washer whitch is tack welded to a flat polished washer.
There is a piece of thick gasket material and greese, between the clutch and the gear.
A jambnut (not shown) locks the clutch to the shaft
Also shown is the ajustable spring tensioner  for the worm assembly.
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