Instruction Manual
D101402X012
3660 and 3661 Positioners
September 2015
34
Parts Kits
Repair Kits
Description Part Number
3660 w/0.2 to 1 bar
(3 to 15 psig) input R3660X00012
3660 w/0.4 to 2 bar
(6 to 30 psig) input R3660X00022
These kits contain keys 9, 26, 27, 28, 29, 43, 44, 45,
49, 95, and 97. Keys 43, 44, 45 and 49 are used for the
3660 with bypass only. An additional O‐ring is included
in kit R3660X00012, but is not used for the 3660.
3661 R3660X00012
This kit contains keys 9, 26, 27, 28, 29, 43, 44, 45, 49,
95, and 97. Keys 43, 44, 45, and 49 are included in kit
R3660X00012, but they are not used for the 3661.
An additional O‐ring is also included in the kit for the I/P
converter outlet.
3660/3661 for Cover Assembly R3660X0032
This kit contains keys 6, 21, 24, 37, 96 and 97.
Mounting Kits
1250 and 1250R
Sizes 225 and 450
Clamp mounting
kit contains key numbers 64,
65, 66, 67, 68, 69, and 70 21B3931X0A2
Center‐bolt mounting
kit contains key numbers 68,
69, 70, 71, and 72 21B3932X0A2
1250 and 1250R
Size 675
Clamp mounting
kit contains key numbers 64, 65, 66, 67,
68, 69, 70, and 101 through 104 21B3931X0B2
Center‐bolt mounting
kit contains key numbers 68, 69, 70, 71,
72, and 101 through 104 21B3932X0B2
657 and 667
Sizes 30, 34, and 40
kit contains key numbers 69, 70, 82, 83, 84,
85, 86, 87, 88, 89, 90, 91, 92, and 93 31B6741X0A2
Sizes 45 and 46
kit contains key numbers 70, 82, 83, 84, 85,
86, 87, 88, 89, 90, 91, 92, and 93 31B6741X0B2
Sizes 50 and 60
kit contains key numbers 70, 82, 83, 84, 85,
86, 87, 88, 89, 90, 91, 92, and 93 31B6741X0C2
3024C
kit contains key numbers 68, 69, 70,
71, and 72 21B3932X0C2
Description Part Number
3024S
kit contains key numbers 64, 65, 66,
67, 68, 69, and 70 21B3931X0C2
GX
kit contains key numbers 68, 69,
71, and 72 GE04613X0A2
Parts List
Note
Contact your Emerson Process Management sales office
for Part
Ordering information.
Positioner Common Parts
Key Description
1 Housing assembly, A03600
For 3660
For 3661
2* Valve assembly, A96061
3 Spring, 316 stainless steel
4* Restrictor assembly, aluminum (includes
filtration screen)
5 Damping screw, stainless steel
6 Calibration tool, aluminum
7 Cheese head screw stainless steel
(7 req'd for 3660;
13 req'd for 3661)
8 Cover plate assembly, aluminum
9* Flapper, A95052
10 Flapper spring, stainless steel
11 Cheese head screw, stainless steel (4 req'd)
12 Restrictor screw, stainless steel
17 Lever assembly, aluminum
18 Adjusting screw, stainless steel
19 Feedback lever assembly, stainless steel
Standard
For Baumann actuators
Note
Parts 19A through 19U are shown in figure 26.
19A Pilot Shaft
19B Locknut
19C Washer
*Recommended spare parts