Side-Mounted Handwheel Assembly For Size 34 Through 60 Actuators; Disassembly For Side-Mounted Handwheel (34-60); Assembly For Side-Mounted Handwheel (34-60) - Fisher 667 Instruction Manual

7. Tighten the remaining bolts in a clockwise, criss-
cross pattern to 13 NSm (10 lbfSft).
8. Repeat this procedure by tightening four bolts, dia-
metrically 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 recom-
mended.
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 Assembly for
Size 34 through 60 Actuators
A side-mounted handwheel assembly (figures 13 and
14) is usually used as a manual actuator. This design
is frequently used to drive the valve open or closed
under loading conditions. Turning the handwheel
clockwise past the neutral position always closes a
push-down-to-close valve. A pair of levers (key 146,
figure 13) on a handwheel assembly close the valve by
moving the valve stem.
Instructions are given below for disassembly and as-
sembly. Perform the disassembly only as far as neces-
sary to accomplish the required maintenance; then
begin the assembly at the appropriate step.
Disassembly for Side-Mounted Handwheel
(34-60)
1. If desired, the handwheel assembly can be re-
moved from the actuator yoke. To do this, remove the
nuts (keys 147 and 170) from the U-bolts (keys 166
and 143) that hold the assembly to the yoke.
2. Remove 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.
Type 667 Size 30-76 & 87
4. Remove the screw (key 161) and pointer mounting
bolt (key 159, not shown) located behind the pointer
(key 160).
5. Remove the nut (key 54), lockwasher (key 150),
and washer (key 149), and take off the handwheel
(key 51). Be careful not to lose the small ball (key 55)
and spring (key 56).
6. Unscrew the bearing retainer (key 136) after loos-
ening the locking set screw (key 168, not shown).
7. Pull the screw assembly (key 145) out of the hand-
wheel body. The operating nut (key 132) will come out
with the screw. Also, remove the bushing (key 151) on
sizes 34 and 40.
8. If required, remove the bearings (key 152), one
from the bearing retainer and the other from the hand-
wheel body.
Assembly for Side-Mounted Handwheel
(Sizes 34-60)
1. Pack the bearings (key 152) with lubricant (key 239
or equivalent). Insert one bearing and the bushing (key
151) in the handwheel body (key 142) as shown in fig-
ure 13 or 14. The bushing is not used in a handwheel
assembly for size 45 through 60 actuators.
2. Coat the screw threads with lubricant (key 239) or
equivalent, and thread the operating nut onto the
screw. Slide the second bearing (key 152) onto the
screw, and insert the end of the screw into either the
bushing (key 151) as shown in figure 13 or 14 or into
the bearing.
3. Thread the bearing retainer (key 136) into the body
(key 142). Completely tighten the bearing retainer, and
then loosen it one-quarter turn. Tighten the set screw
(key 168, not shown) to hold the bearing retainer in
place.
4. Coat the groove in the handwheel body (key 142)
with lubricant (key 237 or equivalent). Insert the spring
(key 56) and ball (key 55) into the handwheel (key 51).
Holding the ball and spring in the handwheel, put the
handwheel (key 51), the washer (key 149), the lock-
washer (key 150), and the hex nut (key 54) on the end
of the screw (key 145). Tighten the hex nut.
5. Position the pointer mounting bolt (key 159, not
shown) and the pointer (key 160) as shown in figure
13 or 14. Insert and tighten the screw (key 161).
6. Assemble the two levers (key 146) with the cap
screws (key 156) for handwheel assemblies for size
45, 50, and 60 actuators or with the machine bolts (key
156) for handwheel assemblies on size 34 and 40 ac-
tuators.
7. If the handwheel assembly was removed from the
yoke, remount the handjack assembly to the yoke us-
ing the dowel pins for alignment. Position the U-bolts
(keys 166 and 143) on the yoke, and hand-tighten the
13