Instruction Manual
D100306X012
657 Actuator (30/30i-70/70i and 87)
June 2018
23
Parts List
Note
Contact your Emerson sales office
or Local Business Partner for part
numbers.
Actuator Assembly
(figures 6, 7, 8, 9, or 10)
Key Description
1 Upper Diaphragm Casing
2* Diaphragm
3 Cap Screw
4 Diaphragm Plate
5 Lower Diaphragm Casing
6 Actuator Spring
7 Travel Stop Cap Screw
8 Cap Screw
9 Yoke
10 Actuator Stem
11 Spring Seat
12 Spring Adjuster
13 Lower Diaphragm Plate
14 Travel Indicator Disk
15 Stem Nut
16 Stem Jam Nut
17 Self‐Tapping Screw
18 Travel Indicator Scale
19 Nameplate
20 Drive Screw
22 Cap Screw
23 Hex Nut
Key Description
24 Twin Speed Nut
25
(1)
Washer
26 Stem Connector Assy
28 Screw
29 Yoke Extension
30 Indicator Adaptor
31 Machine Screw
32 Washer
33 Pipe Bushing
61 Nameplate
73 Cap Screw
238 Warning label
241 Lubricant, Lithium Grease (not furnished with the actuator)
249 Caution nameplate
Top Mounted Handwheel
(figure 11 or 12)
51 Handwheel
54 Stop Nut
133 Handwheel Stem
134 Washer
135 Pusher Plate
137 Casing‐Mounted Travel Stop Locknut
138* O‐Ring
139* O‐Ring
140 Groove Pin
141 Cap Screw
142 Body
169 Grease Fitting
174 Retaining Screw
175 Thrust Bearing
176 Thrust Race
241 Lubricant, Lithium Grease (not furnished with actuator)
242 Sealant, Thread‐Locking (not furnished with handwheel)
244 Lubricant, Anti‐Seize (not furnished with handwheel)
246 Spacer
247 Cotter Pin
*Recommended spare parts
1. Key 25 not part of size 40 and 40i constructions.