MASTER LOCK B100 User Manual

100743

18

1. Remove upper shell (see

page 10).

2. Remove filter end cover

screws using 5/16" nut-
driver.

3. Remove filter end cover

and air filters.

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 33).

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 filters, and filter end
cover.

11. Replace fan guard and

upper shell.

12. Adjust pump pressure (see

page 14).

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 34).

15. Reinstall insert and rotor.
16. Perform steps 10 through

12 above.

Sandpaper

.003"/.004"
(.076/.101 mm) Gap
Measured With
Feeler Gauge

Rotor

Gap Adjusting
Screw

Gap
Adjusting
Screw

Blade

150 ROTOR

PFA/P 059

Insert

Blade

Rotor

Pump
Plate

Filter End
Cover

Air
Intake
Filter

Air
Output
Filter

50 ROTOR

PFA/P 056

Pump
Plate

Insert

Rotor

Blade

Filter End
Cover

Air
Intake
Filter

Air Output
Filter

Fan Guard
(90,000 BTU/Hr
Model Shown)

Fan Guard
(90,000 BTU/Hr
Model Shown)