Emerson Fisher SS-264 Instruction Manual page 9

Instruction Manual
D103565X012
4. Use packing removal tools to pull the packing set (key 11) out of the bonnet (key 7).
5. Carefully clean the drive shaft (key 8) and packing box bore of the bonnet (key 5). Using a flashlight, look into the
packing box bore and ensure all packing and residue are cleaned out.
6. Properly dry out the packing box bore of the bonnet (key 7) before repacking the valve.
WARNING
When the actuator is removed from the valve, the ball/shaft assembly may suddenly rotate with a shearing or cutting
motion, which could result in personal injury. To avoid injury, carefully rotate the ball to a stable position after the actuator
is removed.
Packing Installation
1. Refer to figures 4 and 15 and install the following parts in the packing box bore by aligning each parts ID with the
OD of the drive shaft. First, insert the packing box ring (key 19), then one anti­extrusion ring, two graphite ribbon
packing rings, and lastly the other anti­extrusion ring.
2. Install the packing follower/bushing assembly (key 25).
Note
If the stop screws and nuts (keys 22, 23 and 24) were adjusted during disassembly, refer to the Packing Adjustment section in this
instruction manual before proceeding.
3. If the stop screws (key 22) were not adjusted during disassembly skip to step 5.
4. Apply Loctite 242 (key 77) to the two 3/8­24x1.50 hex cap screws (key 22). Install the cap screws with two 3/8­24
hex nuts (key 23) in the stop flange (key 6C). Final stop screw lock position will be set with gauged clearance to the
packing flange.
5. Install the stop flange (key 6C) assembly against the packing follower/bushing assembly (key 6B).
6. Install three Belleville springs (key 6A) on top of the stop flange (key 6C). Orient the Belleville stack as shown in
figure 3 (top spring with large OD against packing flange (key 5)).
7. If the stop screws (key 24) were not adjusted during disassembly skip to step 9.
8. Apply Loctite 242, (key 77) to two 3/8­24x2.50 stop cap screws (key 24). Install the two stop cap screws (key 24)
with 3/8-24 hex nuts (key 23) in the packing flange (key 5). Final stop screw lock position will be set with gauged
clearance to the stop flange
9. Install the packing flange assembly on top of the Belleville springs (key 6A).
10. Lubricate the two 3/4­10x5.75 continuous thread packing box studs (key 20) with Nuclear Grade anti-seize
lubricant (key 36) and install into the bonnet (key 7).
11. Lubricate the threads and seating surface of the two 3/4­10 hex nuts (key 16) with Nuclear Grade anti-seize
lubricant (key 36) and install onto the packing studs (key 20).
12. Tighten the packing nuts (key 16) without torque until they are snug against the packing flange (key 5).
Note
Use care to keep the packing flange parallel to the stop flange (key 16). Reference figure 4.
SS-264 Valve
September 2021
9