Instruction Manual
D200160X012
4195K Controllers
July 2018
83
Replacing Capsular Element Parts
WARNING
Refer to the Maintenance WARNING on page 51.
CAUTION
Avoid bending or kinking the drive flexure during the following procedures. Bending or kinking the drive flexure can result
in product damage, as well as impaired performance.
Refer to figure 7‐5 for capsular element key number locations. Refer to figure 6‐19 for adjustment locations and refer
to figure 7‐4 for indicator assembly (without process sensing element) part locations.
Replacing the Long Pivot Assembly
1. Remove process pressure from the controller.
2. Remove the tie bar (key 97) from the capsular element assembly by removing the mounting screws (key 103).
3. Note the hole position of link 5 (key 88) and disconnect the link from the pivot adjustment arm on the long pivot
clevis assembly (key 78).
4. Using an Allen wrench, remove the cap screw and washer (keys 12 and 13) that attach the drive flexure (key 79) to
the pivot adjustment arm of the long pivot clevis assembly. Take care not to bend or kink the drive flexure.
5. Remove the two screws (key 102) attaching the long pivot clevis assembly to the mounting plate (key 77).
6. Loosen the screw on the pivot adjustment arm of the replacement pivot clevis assembly, and adjust the arm to the
same length as the arm on the pivot assembly being replaced.
7. Attach the replacement pivot clevis assembly to the mounting plate with the two mounting screws (key 102).
The adjustment arm of the long pivot clevis assembly is connected to a shaft that turns on bushings at each end of
the shaft. In the next step, position the shaft so that both bushings “float” inside the bearings and do not rest
against the end of either bearing.