Fisher 3660 - Page 35

Instruction Manual
D101402X012
3660 and 3661 Positioners
September 2015
35
Figure 24. Fisher 3660 Positioner Assembly
D
D
VIEW D‐D
WITHOUT GAUGES
SECTION C‐C
51B3944‐F
Key Description
19D Nut
19E Lever Sub‐assembly
Standard
For Baumann actuators
19F Zero Shaft
19G Slide Bearing (2 req'd)
19H Housing Bushing
19J Retaining Ring
19K Disc
19L O‐ring
19M O‐ring
19N Spring
19P Retaining Screw
19Q Retaining Ring
19R Roll Pin
19S Zero Adjust Screw
19T Cover
19U Cover Screw
21 Cover assembly, aluminum
24 Machine screw, stainless steel (2 req'd)
26* O‐ring, EPDM (2 req'd for 3660;
3 req'd for 3661)
Key Description
27* O‐ring, EPDM (2 req'd)
28* Diaphragm assembly, aluminum
3660 and 3661
0.2 to 1.0 bar (3 to 15 psig)
3660 only, 0.4 to 2.0 bar (6 to 30 psig)
29* Output diaphragm assembly, aluminum
30 Range spring, N09902 nickel alloy
Standard
Split range
For Baumann actuators
32 Nameplate, A91100
33 Ground terminal for 3661 (2 req'd)
34 Cable gland for 3661, plastic
35 I/P restrictor ass'y for 3661, aluminum
36 Pipe plug for 3661, stainless steel
37 Machine screw, stainless steel
*Recommended spare parts