Couplings - Graco 25C539 Instructions - Parts Manual

Servicing the the Agitator Agitator Shaft
Servicing Servicing the Agitator

Couplings

Couplings Couplings
Setting Setting the Setting the Agitator the Agitator Shaft Agitator
1. With the agitator shaft (47) pushed up against the
lower washer (48), secure the lower portion of the
coupling half (52c) to the shaft by tightening the
coupling set screw against the flat on the shaft.
Leave about a 0.015 in. (0.38 mm) gap between
the coupling half and upper washer (48).
2. Align the upper coupling (52b) with the lower
coupling and tighten the four screws (26).
Tighten to 150–170 in-lbs (17–19 N•m). Leave
a 0.015 in. (0.38mm) gap between each of the
coupling halves and the spider (52d).
3. Connect the air regulator (38). Check for
proper alignment by running the agitator at low
pressures and speeds. If necessary, adjust the
alignment by loosening and retightening the four
adapter plate screws (26).
3A4797F
Shaft and and
Shaft and
Shaft Coupling Shaft Coupling Coupling
Service
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