Assembly - Fisher 1052PSV Instruction Manual

Instruction Manual
D103407X012
15. Unbolt the actuator box assembly (key 14) from the valve.

Assembly

This procedure assumes that the actuator was completely disassembled. If the actuator was not completely
disassembled, start these instructions at the appropriate step.
Key numbers are shown in figure 13.
1. Refer to figure 5 for the orientation of the actuator box assembly (key 14).
WARNING
Exceeding any torque requirement may impair the safe operation of the actuator and lead to possible personal injury or
property damage.
2. Place the lower diaphragm casing (key 2) on top of the actuator box (key 14) 7 inch square tube. Install six hex head
cap screws (key 7) with washers (key 25) in holes identified with a number 7 in figure 11. Using a 9/16 inch hex
wrench, tighten the cap screws to 41 NSm (30 lbfSft).
3. Install two travel stop spacers (key 20) onto the two hex head cap screws (key 8) and install into the holes
numbered 8/20 in figure
4. Clean and then lubricate the threads of the spring adjustor (key 74) with nuclear grade anti-seize lubricant (key 30).
Install the spring adjustor in through the large window of the lower actuator tube (12 x 12 inch cross­section) and
up into the upper actuator tube (7 x 7 inch cross­section). Thread in until the top of the spring adjustor is
approximately 1/4 inch above the surface of spring plate.
5. Place the thrust collar (key 73) on top of the spring adjustor (key 74) by insertion into the window in the middle of
the upper actuator tube. Coat both sides of the needle thrust bearing (key 71) with nuclear grade anti-seize
lubricant (key 30), place between the two needle thrust bearing races (key 72), and install on top of the thrust collar
(key 73). Install the lower spring seat (key 13) on top of the needle bearing assembly (keys 71, 72, and 73) and down
into the counterbore of the thrust collar (key 73).
6. Install springs (keys 11 and 12) on top of the lower spring seat (key 13) through the center opening in the lower
diaphragm casing (key 2).
7. Place the upper spring seat (key 15) on top of the center spring (key 11).
8. Coat the tapered end of the diaphragm rod (key 10) and the threads of the socket head cap screw (key 9) with
nuclear grade anti-seize lubricant (key 30). Bolt the diaphragm plate (key 4) to the diaphragm rod tightening to 102
NSm (75 lbfSft) with a 5/8 inch hex Allen wrench.
Note
Use the turnbuckle (key 57) and locknut (key 58) clamped into clean vise jaw inserts for anti­rotation while tightening.
9. Lubricate the external threads on the diaphragm rod (key 10) with nuclear grade anti-seize lubricant.
10. Install the diaphragm plate/diaphragm rod assembly into the actuator box.
11. Screw the 7/8­14 left­hand threaded upper locknut (key 58) onto the diaphragm rod as far as possible without
torquing.
12. Screw the turnbuckle (key 57) as far as it will go onto the diaphragm rod without torquing.
13. Coat the threads of the rod end bearing (key 17) with nuclear grade anti-seize lubricant (key 30). Screw the 5/8­18
lower locknut (key 16) as far as it will go onto the rod end bearing (key 17) without torquing, to create a rod end
bearing assembly.
11. Using a 9/16 inch hex wrench, tighten the cap screws to 41 NSm (30 lbfSft).
1052PSV Actuator
May 2011
17