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Instruction Manual
D100310X012
5. Slide the extension rod (key 150) into the handwheel screw (key 160), and position the diaphragm casing (key 1,
figures 6, 7, 8, 9, and 10) with the attached parts on the diaphragm. Install the cap screws and hex nuts (keys 13 and
14, figures 6, 7, 8, 9, and 10) and tighten in the following manner.
6. The first four bolts tightened should be diametrically opposed and 90 degrees apart. Tighten these four bolts to 13
NSm (10 lbfSft).
7. Tighten the remaining bolts in a clockwise, criss‐cross pattern to 13 NSm (10 lbfSft).
8. Repeat this procedure by tightening four bolts, diametrically opposed and 90 degrees apart, to a torque of 27 NSm
(20 lbfSft).
9. Tighten the remaining bolts in a clockwise, criss‐cross pattern to 27 NSm (20 lbfSft).
10. After the last bolt is tightened to 27 NSm (20 lbfSft), all of the bolts should be tightened again to 27 NSm (20 lbfSft)
in a circular pattern around the bolt circle.
11. Once completed, no more tightening is recommended.
12. Lubricate and install the thrust bearings (keys 180 and 181), install the bearing retainer (key 182), install the castle
nut (keys 166) on the extension rod. Do not overtighten the castle nut on the bearing. Install the cotter pin (key
167). Replace the cap (key 247).
13. Refer to the Assembly portion of the Actuator maintenance section.
Side‐Mounted Handwheel for Sizes 34 through 60 and 34i through 60i
Actuators
A side-mounted handwheel assembly is normally used as a manual actuator for sizes 34 through 60 (figures 16 and 18)
and 34i through 60i actuators (figures 17 and 19). Turning the handwheel counter-clockwise past the neutral position
opens the valve. Two levers (key 146, figures 16, 17, 18, and 19) on a handwheel assembly operate the valve by
moving the valve stem.
Instructions are given below for complete disassembly and assembly. Perform the disassembly only as far as necessary
to accomplish the required maintenance; then begin the assembly at the appropriate step.
Disassembly for Side-Mounted Handwheel (Sizes 34-60 and 34i-60i)
1. Use step a. for size 34 through size 60 actuators, and use step b. for sizes 34i through 60i.
a. For Size 34 through 60: If desired, the handwheel assembly can be removed from the actuator yoke. To do this,
remove the hex nuts (keys 147 and 170) from the U-bolts (key 166 and 143) that hold the assembly to the yoke
for the size 30 and size 40. Remove the hex nuts (key 144 and 170) from the U-bolts (key 166 and 143) that hold
the assembly to the yoke for the size 45 through size 60.
b. For Size 34i through 60i: If desired, the handwheel assembly can be removed from the actuator yoke. To do this,
remove the cap screws (key 256 and 257) and spacers (key 258) that hold the assembly to the yoke for the size
30i through size 60i.
2. Remove the retaining ring (key 154) and drive out the lever pivot pin (key 153).
3. Two screws (key 156) hold the right- and left-hand levers (key 146) together. Remove the screw from the top of the
levers so that the levers will drop down out of the assembly. Disassemble further, if necessary, by removing the
other screw.
4. Remove the screw (key 161) and pointer mounting bolt (key 159, not shown) located behind the pointer (key 160).
5. Remove the stop nut (key 54), lockwasher (key 150), and washer (key 149). Then remove the handwheel (key 51),
being careful not to lose the small ball (key 55) and spring (key 56).
6. Loosen the locking set screw (key 168, figure 19). Then, using a suitable tool, unscrew the bearing retainer (key
136).
667 Actuator (Size 30/30i - 76/76i and 87)
May 2018
19
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