Pump Rotor
(Procedure if rotor is binding)
1.Remove upper shell (see page 10).
2.Remove fi lter end cover screws using 5/16" nut- driver.
3.Remove fi lter end cover and air fi lters.
4.Remove pump plate screws using 5/16" nut- driver.
5.Remove pump plate.
6.Remove rotor, insert, and blades.
7.Check for debris in pump. If debris is found, blow out with compressed air.
8.Install insert and rotor.
9.Check gap on rotor. Adjust to .003"/.004" (.076/.101 mm) if needed (see Figure 18).
Note: Rotate rotor one full turn to insure the gap is
.003"/.004" (.076/.101 mm) at tightest position. Adjust if needed.
10.Install blades, pump plate, air fi lters, and fi lter end cover.
11.Replace fan guard and upper shell.
12.Adjust pump pressure (see page 11).
Note: If rotor is still binding, proceed as follows.
13.Perform steps 1 through 6 above.
14.Place fi ne grade sandpaper (600 grit) on fl at surface. Sand rotor lightly in
“fi gure 8” motion four times (see Figure 19).
15.Reinstall insert and rotor.
16.Perform steps 10 through 12 above.
14
Blade Pump
Plate
Air
Intake
Filter
Filter End
Cover
| Insert |
| Rotor |
| Air |
| Output |
125 ROTOR | Filter |
PFA/P 058 |
Fan Guard
Figure 17 - Rotor Location
Gap Adjusting
Screw
.003"/.004" (.076/.101 mm) Gap Measured With Feeler Gauge
Blade | Rotor |
|
Gap
AdjustingSandpaper
Screw