Flowserve SMB Series Electric Actuators - Manual (Page 68)

SMB Series/SB Series Installation and Maintenance FCD LMENIM1401-04-AQ – 01/15
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a CAUTION: The SMB-5 drive sleeve locknut has left-hand threads and must be rotated clockwise
to remove.
2. Rotate the Handwheel (piece #10) to close valve, causing the Stem Nut (piece #127) to rise up
the threaded valve stem until the stem nut splines are free of the Drive Sleeve (piece #126).
3. Rotate the Stem Nut (piece #127) by hand for the remaining length of the valve stem and
remove.
4. Remove the Limit Switch Compartment Cover (piece #12) and disconnect all external electrical
leads to the actuator.
NOTE: Ensure all motor and control leads are labeled for reassembly.
5. Remove the actuator from the valve if required to facilitate disassembly.
6. Disconnect motor leads and leads between the Torque Switch (piece #116) and Geared Limit
Switch (piece #117).
7. Remove Torque Switch (piece #116) and Geared Limit Switch (piece #117).
8. Remove Handwheel Washer (piece #60) and remove the Handwheel (piece #10) and the
Handwheel Clutch (piece #13) from the Handwheel Shaft and Pinion (piece #40).
SMB-5 Thrust Housing Only
1. Remove Thrust Adapter Housing (piece #125) assembly from the Housing (piece #1).
NOTE: If disassembly of the thrust adapter assembly is not required, continue to Step 2.
a. Remove the Seal Retainer Plate (piece #129) and the Oil Seal (piece #132).
b. Loosen the set screw and remove the Thrust Bearing Cartridge (piece #128) from the Thrust
Adapter Housing (piece #125).
c. Remove the Upper Bearing Roller Assembly (piece #131).
d. Lift the Thrust Drive Sleeve (piece #126) out of the Thrust Adapter Housing (piece #125).
e. Remove the Lower Bearing Roller Assembly (piece #131).
SMB-5T Torque Housing
1. Using lifting eye bolts, remove Housing Cover (piece #3).
2. Remove the Torque Drive Sleeve (piece #11) and the Worm Gear (piece #17) in this order.
3. Remove Motor (piece #115) and Motor Adapter (piece #5).
NOTE: Record the thickness of gaskets for reassembly.
4. Remove the Intermediate Pinion and Shaft (piece #15) and Motor Drive Intermediate Gear (piece
#41) as an integral assembly.
NOTE: Record the location and the thickness of gearing shims in the housing.
5. Remove the Output Worm Shaft Gear (piece #42) and the Bearing Spacer (piece #64).
6. Punchmark Worm Shaft End Cap (piece #7) before removing the cap.
7. Remove the Worm Shaft End Cap (piece #7).
NOTE: Record the gasket thickness for Declutch Housing Cover (piece #4) for reassembly.