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Instruction Manual
D103565X012
Packing Adjustment
The following instructions describe how to set the correct stop screw gaps A and B for proper packing load. Gap A is
the nominal packing load and should be used under normal circumstances. Gap B is the maximum packing load and
should not be exceeded.
Stop Screw Gap Settings
1. Loosen the packing flange nuts (key 16) until loose, do not remove nuts.
2. Retighten nuts until just finger-tight.
3. Use the gap gage GE51823 to set Gap A (nominal) to 5.74 mm (0.226 inch) for the packing flange stop screws (key
24) and the top of the stop flange (key 6C). While holding the flange stop screws (key 24) stationary, torque the nut
(key 23) to 41 NSm (30 ftSlbf). Double-check Gap A clearance and adjust if necessary.
4. Use the gap gage to set Gap B (maximum) to 7.80 mm (0.307 inch) for the stop flange stop screws (key 22) and the
packing flange (key 5). While holding the flange stop screws (key 22) stationary, torque nut (key 23) to 41 NSm (30
ftSlbf). Double-check Gap B clearance and adjust if necessary.
5. Tighten the packing flange nuts (key 16) evenly until the Gap A (nominal) 5.74 mm (0.226 inch) for the packing
flange stop screws (key 24) goes to zero and just contacts the stop flange (key 6C) which will set the packing stress
to its nominal value.
Packing Load Adjustment
Use the following steps to increase the packing load from nominal to maximum packing load.
1. Loosen the stop nuts (key 16) and retract the two 3/8-24 x 2.50 stop cap screws (key 24) three full turns.
2. Apply Loctite 242 (key 77) to the two stop cap screws (key 24) and torque the nut (key 23) to 41 NSm (30 lbfSft).
3. Tighten the packing flange nuts (key 16) evenly until the Gap B (maximum) 7.80 mm (0.307 inch) for the packing
flange stop screws (key 22) goes to zero and just contacts the packing flange (key 5), which will set the packing
stress to its maximum value.
Replacing the Trim Parts
The open and closed travel stops of the actuator will need adjustment after any trim replacement per the Actuator
Mounting section of this manual. If the bonnettobody joint is loosened for any reason, establish the zero position per
the Determining Closed Position section of this manual.
Perform this procedure if the control valve components are at a recommended replacement interval, scratched or
damaged, showing performance degradation at routine diagnostics, or the valve is not shutting off properly.
This section describes how to replace the thrust washers (key 1), Belleville spring (key 4), ball/shaft assembly (key 8),
bearing (key 9), and seal ring components (keys 25, 26, and 27). Refer to figure 15.
Disassembly
1. Remove actuator taking care not to bind the coupler (key 101) on the drive shaft (key 8).
2. Loosen and remove packing nuts (key 16). Now remove the packing flange (key 5), Belleville springs (key 6A), stop
plate (key 6C), and packing follower (key 6B).
3. Rotate the ball 180 degrees out of the seal so that the sphere and pin hole point downstream. The keyway at the
top of the shaft will be facing towards the inlet side of the body.
Note
There is a linear indicating mark just above the packing parts on the drive shaft indicating the sphere-side of the ball
SS-264 Valve
September 2021
11
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