Installing Motor Conversion Kits - Graco 25C539 Instructions - Parts Manual

Service
Replacing Replacing the Replacing the Agitator the Agitator Agitator Shaft
1. Remove the agitator paddle (45). Remove the
set screw from the lower coupling (52c). Pull out
the agitator shaft (47) and install the new shaft.
Replace the agitator paddle (45).
2. With the agitator shaft (47) pushed up against
the lower washer (48), secure the lower portion
of the lower 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 washer (48).
Replacing Replacing Replacing the the Shaft the Shaft Seals Shaft
1. Remove the guard mounting screw (75) and
remove the guard (74).
2. Remove the three cap screws (51) and washers
(40) from the mounting bracket (58), and remove
the air motor assembly.
3. With air motor assembly removed, remove the
set screw from the lower coupling half (52b). Pull
out the agitator shaft (47).
4. Remove the hex nut (49) and remove the shaft
housing (42). Remove the seals (42a, 42b) from
the shaft housing, and install the new seals.
5. Reinstall the shaft housing and shaft. Use
installation steps listed in Setting the Agitator
Shaft Coupling.
18
Shaft Shaft
Seals Seals
Installing Motor Motor Conversion Conversion Kits
Installing Installing Motor Conversion
Installing Motor Installing Installing Motor Conversion Motor Conversion Conversion Kit
1. Remove the existing motor and gearbox. See
manual 308371 for instructions.
2. Remove the existing shaft assembly and turn the
tank cover over in order to replace seal (42b)
located inside the bearing housing (42). (See
the figure in All Models, page
existing seal (42b) and replace with a new seal.
Reinstall the shaft assembly.
Note
If the existing shaft is damaged in
the bearing housing area, replace the
shaft with a new shaft for best sealing
performance.
3. If replacing both shaft seals 42a and 42b, follow
the steps in Replacing the Shaft Seals, page
4. Install the air motor.
Installing the Air Motor, page 16
Setting the Agitator Shaft Coupling, page
5. Install the air regulator and mufflers. See
Air Regulator and Mufflers, page 7
6. Attach the fittings (36, 8) and the hose (70) to
complete the conversion.
Installing Motor Motor Conversion Conversion Kit
Installing Installing Motor Conversion
1. Loosen the upper hex head screw on the
retaining bracket.
2. Remove the existing motor and gearbox, as well
as any spacers.
3. Insert the air motor with adapter.
4. Install the air regulator and mufflers. See
Air Regulator and Mufflers, page 7
5. Attach the fittings (36, 8) to complete the
conversion.
6. Check for proper alignment by running the
agitator at low pressures and speeds. If
necessary, adjust the alignment by loosening the
three adapter screws and retightening while the
agitator slowly spins.
Kits
Kits
Kit 19A844 Kit 19A844 19A844
19.) Remove the
18.
See
and
17.
.
Kit 26B168 26B168
Kit 26B168
.
3A4797F