Motor mount / gear shroud
#7863
Pinion gear
#7862
Nozzle
extension
#7841-3
Nozzle #7841
Spur gear
retainer
#7847
Rotor
bearing,
large
#7844B
Rotor
#7842-3
Rotor
bearing,
small
#7844A
Gear cover
#7864
Screw #H2-56X1/4PH
Nut #7842A
Bearing seal #7852
Spur gear #7845
Screw
#H2-56X1/4FH
4
2
3
Valve maintenance
To thoroughly clean the fluid body and
replace needle packings:
1. Remove needle stroke control knob
and spring.
2. Remove the gear cover.
3. Remove the rotor retainer nut, then
the rotor, nozzle, fittings and motor
from the fluid body.
4. Remove the motor mount and
motor assembly.
5. Remove the fluid body from the air
cylinder body. Remove the O-ring
from the fluid body.
6. Clean the fluid body, rotor and noz-
zle in appropriate solvent.
Note:
Rotor bearings can be soaked in
light oil for one hour to penetrate past
the seals. Replace bearings if rotor does
not rotate smoothly.
7. Use tool #7803 to remove needle
packings from fluid body.
8. Remove any remaining packings
and the spring from the needle.
Note:
The lower cylinder needle O-ring
is held in place by a flat retaining washer
that also serves as the packing-spring
seat. The washer may come out with
the spring. Ensure that it is back in place
before reinstalling the packing spring.
9. Clean the needle with a cloth
dampened in solvent.
Valve Disassembly
and Reassembly Procedures
www.efd-inc.com [email protected]
USA 800-556-3484 44 (0) 1582 666334 Asia +86 (21) 5854 2345
Sales and service of EFD dispensing systems are available worldwide.
