Emerson Fisher 657 Instruction Manual page 21

Instruction Manual
D100306X012
5. Remove and inspect the O‐ring (keys 139); replace if necessary.
6. For all actuator sizes: Loosen the stop nut (key 54), then unscrew the travel stop stem (key 133) out of the actuator
stem. The lower diaphragm plate can now be removed.
Assembly for Casing‐Mounted Travel Stop
1. Reassemble the up or down travel stop in the reverse order of the disassembly steps, being sure to apply lubricant
as shown by the lubrication boxes (key 241) in figures 6, 7, 8, 9, 10, 18, 19, or 20, as appropriate.
2. Readjust the travel stop to obtain the appropriate restriction by following the adjustment procedures presented in
the introductory portion of the Casing‐Mounted Adjustable Travel Stops section. Return the unit to operation.
657 Actuator (30/30i-70/70i and 87)
June 2018
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