10
Reverse Actuator Disassembly
(see Fig 3)
1.
Remove nuts/bolts (18,19), upper diaphragm case
(15) and diaphragm (20).
2.
Insert (3/4, 7/8, 0.745, 0.995) in diameter rod
through the hole in Yoke (34) and actuator stem
(35) to prevent stem from rotating. NOTE: If this
step is not done then permanent damage will
occur to lower stem boot. For 35 actuator use a
wrench on wrench flats to prevent stem from
rotating.
3.
Remove actuator stem nut (16), diaphragm disc
(17), diaphragm (20), and collar (22). Remove
actuator stem (35), springs (36,37), spring seat
(30), washers (38,39), spacer (33) for 135R, and
stem seal collar (31). Remove spring adjustment
nut (40).
4.
Remove stem seal (29) as follows: In 35R, remove
capscrews (23) and disassemble lower diaphragm
disc (21) from yoke (34) and lift out stem seal (29).
In 55R and 85R, remove screws (28), seal ring (27)
and stem seal (29), then remove lower diaphragm
bolts, lower diaphragm case (21) and gasket (26).
For 135R, remove capscrews (23) and disassemble
lower diaphragm case (21) from yoke (34) and lift
out stem seal (29).
Reverse Actuator Reassembly
(see Fig 3)
1.
Assemble spring adjusting nut (40) washer(s)
(38,39), spacer (33) for 135R, stem seal collar (31),
springs (36,37), and spring seat (30).
2.
Position stem seal (29) on stem seal collar (31), in
sizes 55R, 85R, and 135R place bead of stem seal
in recess of stem seal collar.
3.
In 35R actuators, install stem seal (29) and collar
(31) over actuator stem (35) in yoke (34). Install
lower diaphragm base (21) to yoke (34). Insert cap
screws (23) through holes in diaphragm lower case
(21) and stem seal (29) and tighten as described
below.
4.
In 55R and 85R actuators, install stem seal (29)
and seal ring (27) and torque per Table 2. What
about the base plate?
5.
In 135R actuator, install stem seal (29) and collar
(31) over actuator stem (35) in yoke (34). Install
lower diaphragm base (21) to yoke (34). Insert
studs and nuts (24) through holes in diaphragm
case (21) and stem seal (29) and tighten as
described below.
6.
Pre-setting stem seal (55R, 85R & 135R) - Place
collar (22) on stem seal (29) making sure the bead
on stem seal enters recess in collar. Reassemble
diaphragm (20) over actuator stem (35). Fit center
hole in diaphragm around raised face of collar (22).
Replace diaphragm disc (17) and nut (16). Hold
actuator stem steady with rod through yoke and
stem or on wrench flats. Failure to do so may
result in stem seal failure. Then tighten nut.
Replace upper diaphragm case (15) and nuts/bolts
(18/19) and torque to requirements in Table 2.
7.
Presetting stem seal 35R - Place collar (22) on stem
seal (29), assemble nut (16) to actuator stem (35)
and tighten. Then press actuator stem downward to
make stem seal move to taut position. Tighten
capscrews to the requirements of Table 2 and
remove nut (16).
Reverse Actuator HOD
Disassembly
(see Fig 3)
1.
Remove nut (1), lockwasher (2), and handwheel
(3).
CAUTION!
Spring load must be completely removed
before proceeding or injury/death can occur.
CAUTION!
Spring load must be completely removed before
proceeding or injury/death can occur.
NOTE
Ensure that all components being installed are free
from any nicks burrs or defects prior to assembly.
