Cashco 2296HF - Manual (Page 6)

6 IOM-2296
8. Secure “dangling parts” - ac ces so ry plate
((AP)) and indicator washer (16) - to ac tu a tor
stem (6) with stem jam nuts (17).
9. For 1/2"-1-1/2" sizes, tighten screws (14);
For 2" size, ham mer rap yoke nut (15) un-
til tight. Release tem po rary air source.
D. Trim/Packing Removal and Replacement:
NOTE: This Subsection assumes that the ac tu a tor
subassembly (AA) has been already re moved
per Sub-section B. previous.
1. Secure (BA) in a vise with the plug/stem (4)
pointing up wards. Place matchmarks be-
tween the body (1) and bon net (2).
2. Pull plug/stem (4) upwards. Hold stem (4) up
if nec es sary using soft-jawed locking pli ers.
3. Sizes 1/2" – 1-1/2":
a. Using a smooth jaw wrench, loos en bon-
net (2) from the body (1) by rotating CCW
(viewed from above). It may be nec es sary
to hammer-rap the wrench to break the
bon net (2) loose. Remove bon net (2)
from body (1).
b. Lift the bonnet (2) (with in te gral cage),
stem (4), stem guide bush ing (12),
and all the stem packing com po nents
(10,11,20,21,23,25,26,29) directly up-
wards and out of the body (1) cavity,
ensuring not to dam age the threaded
portion of the body (1)-to-bonnet (2) joint.
Lay this par tial as sem bly aside.
c. Remove o-ring/gasket (6).
4. Size 2":
a. Loosen & remove 4 body stud nuts (28).
b. Carefully wiggle plug/stem (4) side-to-
side to loosen bonnet (2) from body (1)
and cage (19). Lift the bon net (2) directly
upwards along with stem (4), stem guide
bush ing (12), and all the stem packing
components (10,11,20,21,23,25,26,29).
Lay this assembly aside.
c. Remove cage (19) from body (1) cav i ty
by lifting upwards.
d. Remove bonnet gasket (6).
5. Remove seat ring (3), gasket (5) from body
cavity.
NOTE: - For Composition (Soft) Seated Trim-
Remove seat retainer (8) and seat insert (7).
See Figure 4.
CAUTION
It sometimes occurs that the seat ring (3), cage (19), and
seat ring gas ket (5) will “stick” to the bon net (2) or cage
(19), and pull out with parts of this step above. DO NOT
ALLOW THE SEAT RING (3) OR CAGE (19) TO DROP
and do per son al injury or de form parts (3, 19)!
6. Remove body (1) from vise and place in clean-
ing solvent.
7. Place the bonnet (2) and packing assembly
(4,10,11,12,20,21,23,25,26 & 29) into the
vise with stem (4) directed upwards. NOTE:
Soft-jawed locking pliers is still clamped to
stem (4). Position the bonnet (2) with respect
to the vise such that the plug end of the stem
(4) can prevent the stem from falling out once
the locking pliers are re moved. Remove the
soft-jawed locking pli ers.
8. Remove both packing stud nuts (21). Lift
upwards to remove the packing fl ange (23),
packing follower (11) and bushing (29).
9. While holding the plug/stem (4) with your
fi ngers to keep it from dropping, reorient the
bon net (2) within the vise to allow the stem (4)
to be withdrawn out the bottom of the bonnet
(2).
10. Using a pick-end tool, extract packing rings
(10) from within the bonnet's (2) packing box;
discard packing rings (10). NOTE: Four v-
rings, plus an upper and lower ring make a
set.
11. Rotate packing stud nuts (21) over end of
packing studs (20) to prevent impact damage.
12. Re move bonnet (2) with guide bushing (12)
still in packing box from vise. Turn bonnet (2)
upside down and allow washer (26), spring
(25) and guide bushing (12) to slide out.
NOTE: Guide bushing (12) is “pressed” into bon-
net. If stuck in place, use a tool on the guide
bushing's (12) bottom end to push the guide
bushing (12) out.
13. Place all me tal lic parts in cleaning solvent.
Remove parts and allow to dry or wipe clean.
Dispose of solvent or solvent soaked rags/
towels ac cord ing to Owner's pro ce dures.