Pump Rotor
(Procedure if rotor is binding)
1. | Remove upper shell (see page 10). |
2. | Remove filter end cover screws |
| using 5/16" |
3. | Remove filter end cover and air |
| filters. |
4. | Remove pump plate screws using |
| 5/16" |
5. | Remove pump plate. |
6. | Remove rotor, insert, and blades. |
7. | Check for debris in pump. If debris |
| is found, blow out with com- |
| pressed air. |
8. | Install insert and rotor. |
Blade Pump Plate
Air Intake Filter
Filter End Cover
Fan Guard
Insert
Rotor
100 | PFA/P 059A |
| Air Output Filter |
9. Check gap on rotor. Adjust to |
.076/.101 mm (.003"/.004") if |
needed (see Figure 17). |
Note: Rotate rotor one full turn to insure the gap is .076/.101 mm (.003"/.004") at tightest position. Adjust if needed.
10.Install blades, pump plate, air filters, and filter end cover.
11.Replace fan guard and upper shell.
12.Adjust pump pressure (see page 11).
Figure 16 - Rotor Location
Gap Adjusting Screw
Blade
.003"/.004" Gap
Measured With
Feeler Gauge
Note: If rotor is still binding, proceed as follows.
13.Perform steps 1 through 6 above.
14.Place fine grade sandpaper (600 grit) on flat surface. Sand rotor lightly in “figure 8” motion four times (see Figure 18).
15.Reinstall insert and rotor.
16.Perform steps 10 through 12 above.
Rotor
Gap Adjusting Screw
Figure 17 - Gap Adjusting Screw Locations
Sandpaper
Figure 18 - Sanding Rotor
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