Graco 3900 Paint Sprayer User Manual


 
30940910
Pinion Assembly/Rotor/Field/Shaft/Clutch
Removal
If pinion assembly (19) is not removed from clutch
housing (5), do 1. through 4. Otherwise, start at 5.
1.
Relieve pressure; page 5.
2. Remove drive housing; page 9.
3. Disconnect field cable (X) from pressure control,
and gallon counter sensor at (A).
8699A
Fig. 4
X
Bottom View
A
4. Fig. 5. Remove five screws (10) and lockwashers
(17) and pinion assembly (19).
10
17
10
17
Fig. 5
8700A
19
5. Fig. 6. Place pinion assembly (19) on bench with
rotor side up.
6. Remove four screws (72) and lockwashers (17).
Install two screws in threaded holes (E) in rotor.
Alternately tighten screws until rotor comes off.
8701B
Fig. 6
E
72
17