Masoneilan 37002 Series MiniTork II Valve (w/actuator Model 33) Instruction Manual | 19
Copyright 2020 Baker Hughes Company. All rights reserved.
For Actuator Model 33 NEW Version (Figure 25)
A. Replace spring (90) into lower diaphragm case (91).
B. Replace locknut (93) on rod end bearing (94) and
screw rod end bearing into stem/rod subassembly
(77).
C. Install stem/rod subassembly (77) and clevis diaphragm
plate (78) using pin clevis (79).
D. Secure with retaining rings (81).
E. Refer to Actuator Diaphragm Replacement Section
and complete Steps J through M.
Reassembly of Actuator to Bracket
With the valve body assembled to the bracket, determine action
desired and proceed as follows:
A. Ensure stop (92) is in place in the actuator.
B. Replace the actuator on the bracket in the
appropriate hole for desired action and ensure that
the rod end bearing (94) is straddled by the lever (33)
(or levers if handwheel is supplied).
C. Replace lock washers (76) hex nuts (75) and tighten
securely.
D. Rotate the vane to the closed position, insuring that it
is operating in the quadrant shown in Figure 11.
CAUTION
CAUTION
WARNING
DANGER
In order for the valve to operate properly and ensure
tight shutoff for lined valves, the vane must operate In
quadrant shown in Figure 11.
E. Depending on the valve action (air to close or air to
open), proceed to the appropriate following section.
Air to Open
A. With the vane in the closed position,align the hole in
the rod end bearing (94) with the hole in the lever (33)
by rotating the rod end bearing in the proper
direction.
B. Install pivot pin (12) and retaining rings (11).
Note: On units equipped with a handwheel, spacers
(10) must also be installed on either side of the rod end
bearing.
C. Ensure that lever (33), rod end bearing and actuator
shaft are vertically aligned and tighten capscrew (34).
Note: On units equipped with a handwheel, ensure that
both levers are as close together as possible and in
vertical alignment with the rod end bearing and actuator
stem, then tighten capscrews (34).
D. Tighten hex nut (93) against the actuator stem (77).
E. Replace front cover (13).
F. Rotate indicator arm (9) to indicate closed position on
the valve and secure in place by tightening clamp
screw (32) and nut (70).
G. If the unit is equipped with a handwheel, proceed to
Handwheel to Bracket Assembly Section.
H. Replace bottom cover (19), side covers (56) and base
cover (28).
Air to Close
A. Ensure that the vane will operate in the quadrant
shown in Figure 11 and place the vane in the closed
position.
B. Attach a temporary air supply line to the actuator and
apply 20 psi of air pressure, insuring that when the
rod end bearing (94) extends it is straddled by the
lever (33) (or levers if handwheel is supplied).
C. Align the hole in rod end bearing (94) with the hole
in the lever (33) by rotating the rod end bearing in the
proper direction.
D. Install pivot pin (12) and retaining rings 11).
Note: If the unit is equipped with a handwheel, spacers
(10) must be installed on each side of the rod end
bearing (94).
E. Tighten hex nut (93) against the actuator stem (77).
F. Ensure lever (33) is vertically aligned with the rod end
bearing and stem assembly and tighten lever
capscrew (34).
Note: On units equipped with a handwheel, ensure both
levers are as close together as possible and in vertical
alignment with the rod end bearing and actuator stem
then tighten capscrews (34).
G. Relieve air pressure and remove temporary air line.
H. Replace front cover (13).
I. Rotate the indicator arm (9) to indicate open posi tion
and secure in place by tightening clamp screw (32)
and nut (70).
J. If the unit is equipped with a handwheel, proceed to
the Handwheel to Bracket Assembly.
K. Replace bottom cover (19) side cover (56) and base
cover (28).
Handwheel Reassembly
To reassemble the handwheel, proceed as follows:
A. Replace thrust washer (48) and handwheel pivot (46).
Note: The handwheel pivot is installed so that the
recessed end is away from the thrust washer as shown
in Figure 16.
B. Install O-ring (50) in the groove.
Note: Do not lubricate Oring.
C. Apply a liberal amount of lubricant to the bearing
race (49) and bearing (49A) and install, insuring there is one
race on either side of the bearing.
D. Install lock nut (71) and finger tighten only.
E. Install retaining ring (47).
