Instructions EM39003 - 05/10
39003 Series High Performance butterfly Valves
19
and secure in place by tightening clamp screw (13) and
nut (50).
K.
If the unit is equipped with a handwheel, proceed to
Section 7 (Handwheel to bracket Assembly).
L.
Replace bottom cover (41), side cover (38) and boss
cover (42).
5. Air to Open
A.
With the disc in the fully closed position, align the hole in
the rod end bearing (71) with the hole in the lever (14) by
rotating the actuator stem (54) in the proper direction.
B.
Install pivot pin (5) and retaining rings (4).
Note: On units equipped with a handwheel, spacers
(3) must also be installed on either side of the rod end
bearing.
C.
Ensure that the lever (14), rod end bearing, and actuator
shaft are vertically aligned and tighten cap screw (15).
Note: On units equipped with a handwheel, ensure
that both levers are in vertical alignment with the rod
end gearing and actuator stem. Then tighten cap
screws (15).
D.
Rotate the actuator stem (54) to back off the disc so
that the flat face of the disc is parallel to the face of the
retaining ring.
E.
Tighten hex nut (70) against the actuator stem (54).
F.
Replace front cover (6).
G.
Rotate indicator arm to indicate position on the valve
and secure in place by tightening clamp screw (13) and
nut (50).
H.
If the unit is equipped with a handwheel proceed to
Section 7 below for handwheel to bracket assembly.
I.
Replace bottom cover (41), side covers (38) and boss
cover (42).
6. Handwheel Reassembly
To reassemble handwheel, proceed as follows:
A.
Install O-ring (32) in the groove.
Note: Do not lubricate O-Ring.
B.
Replace thrust washer (29) and handwheel pivot (27).
Note: The handwheel pivot is installed so that the
recessed end is away from the thrust washer as
shown in Figure 13.
C.
Apply a liberal amount of lubricant to the bearing race
(31) and bearing (30) and install ensuring there is one
race on either side of the bearing.
D.
Install locknut (51) and finger tighten only.
E.
Install retaining ring (28).
7. Handwheel to Bracket Assembly
The handwheel is always installed on the same side of the
bracket as the actuator. To install the handwheel assembly
proceed as follows:
A.
Insert handwheel shaft (22) through appropriate bracket
hole and onto lever arm (18) and install clevis pin (20)
and retaining clips (21).
B.
Install handwheel bracket (23), lock washers (25) and
cap screws (24) and tighten firmly.
C.
Rotate the handwheel subassembly onto the shaft
(22) far enough to allow alignment of the holes in the
handwheel pivot (27) to align with the holes in the
handwheel bracket (23) and install pivot pins (26) and
tighten firmly.
D.
Connect handwheel shaft S/A (59) to handwheel.
E.
Rotate the handwheel to the disengaged position.
Note: The disengaged position is achieved when the
handwheel shaft is fully visible in the slot on the end
of the handwheel.
F.
Install end cap (33).
G.
Replace bottom cover (41), side covers (38) and boss
cover (42).
8. Minor Adjustments
In some instances it may be required to shorten or lengthen the
rod end bearing (71) to obtain the shutoff desired. The flat face
of the disc must be parallel to the face of the retaining ring in
the closed position. To adjust the rod end bearing length, refer
to Figure 15. Remove one retainer (4) and slide out pivot pin
(5) from lever (14). Pull or push rod end bearing out of retainer.
Loosen hex nut (70). Rotate rod end to achieve desired length.
Tighten hex nut. Align hole in lever (14) with hole in rod end
bearing (71). Insert pivot pin (5) through lever and rod end
bearing. Install retainer (4). Stroke valve and repeat above steps
until desired shutoff is achieved.
Extension of the rod end bearing is limited to approximately
3/8" using this method for adjustment. Further extension
could prevent sufficient thread engagement for satisfactory
performance. Should more than 3/8" be required, lever (14) is
not on the correct shaft spline; refer to appropriate section of
this instruction and change as required.
