8 309384
Service
11. Remove the screws (24), and separate the fluid
section from the fluid head mount (21).
12. Remove the rubber boot (34).
13. Separate the fluid body (22) and adapter (23).
14. Remove the seat (27) and fluid needle (29).
15. Unscrew the seal housing (32).
16. Remove the seals (30 and 33), o–ring (26), washer
(36), and bushing (31).
17. Clean the parts in a non–flammable cleaning fluid
that is recommended by your material supplier.
Replace parts as needed.
NOTE: Use lithium–based grease to lubricate o–rings
and seals.
18. Lubricate seal (orange) (33) and press the seal
into the fluid body (22), with the lips of the seal
facing into the fluid body.
19. Install the washer (36) on top of seal (33).
20. Lubricate seal (black) (30) and press into the
bushing (31), with the lips of the seal facing into
the bushing.
21. Install the o–ring (26) on the end of the bushing
(31).
22. Install the bushing (31) into the fluid body (22),
with the o–rings facing into the fluid body.
23. Screw seal housing (32) into fluid body (22).
24. Lubricate the fluid needle shaft (29). Turn the
needle as you install the shaft through the fluid
body (22), seals (30 and 33), and bushing (31).
25. Install the o–rings (26 and 28) and lubricate them.
26. Press and turn the seat (27) into the fluid body
(22).
27. Replace rubber boot (34) over the connector (37)
and secure end to the motor face plate. Slide boot
back to expose set screw holes.
28. Press the fluid body (22) and adapter (23) together
and secure them with the four screws (24) and
split lock washers (25). Torque the screws to 32
in-lb (3.6 NSm).
29. Slowly relieve the air pressure from the metering
valve to release the closer.
CAUTION
The motor shaft is forced to the full forward position
by the closer. Slowly relieve the air pressure to
prevent excessive impact of the shaft, which could
damage the equipment.
30. Finger–tighten one set screw (35) on the connec-
tor (37). Tighten the second set screw and torque
to 15 in-lb (1.7 NSm). Retighten the first set screw
and torque to 15 in-lb (1.7 NSm).
31. Slide the rubber boot (34) back to cover the set
screws (35), making sure the end is still secured
over the motor face plate.
32. Install the guard (39).
33. Connect the pressure sensor cable (K) to the
connector (L).
34. Mount the metering valve.
35. Connect the fluid lines to the metering valve fluid
line inlet (A) and (B).
36. Connect the closer air line to the closer air inlet
(G).
37. Turn on the fluid supply.
38. Recalibrate the PrecisionFlo system. See the
PrecisionFlo control manual.
