SMB/SB Installation and Maintenance Manual 140-11000 • July 2003 7-31
Flow Control Division
Limitorque Actuation Systems
7. Thread Cartridge Stem Locking Nut (piece #48) onto the Bearing Cartridge Stem (piece #45) by hand.
8. Install Hollow Drive Shaft (piece #55).
a. Install Geared Limit Threaded Collar (piece #32) and key on motor end of Hollow Drive Shaft with threaded end toward Worm
(piece #56).
b. Slide Bearing (piece #95) onto Hollow Drive Shaft (piece #55).
c. Thread Bearing Locknut (piece #99) onto the Hollow Drive Shaft . Align the set screw hole with the drilled “spot” on the shaft.
Install and tighten set screw. (Hold drive shaft using adjustable spanner on splines.)
9. Push Hollow Drive Shaft (piece #55) to declutch end and install Bearing Spacer (piece #64).
10. Install the Output Worm Shaft Gear (piece #42) and Intermediate Pinion and Shaft (piece #15).
11. Install motor gearing shims in Motor Adapter (piece #5) bearing bores and install the Motor Adapter Gasket (piece #84) and
Motor Adapter (piece #5). Tap the Motor Adapter to ensure that the bearings seat.
12. Check Intermediate Pinion and Shaft (piece #15) for proper shims. Shaft should rotate freely with no axial movement.
Use original shims or provide new shims that are the same thickness as measured at disassembly.
13. Install Motor (piece #115).
14. Install Spirolox Ring (piece # 106) on the Hollow Drive Shaft (piece #55).
15. Install Declutch Housing (piece #2) using two screws only to compress the Belleville Springs (piece #58). DO NOT install
gasket.
16. Using two screws, thread Cartridge Stem Locking Nut (piece #48) on the Bearing Cartridge Stem (piece #45) until the Locking
Nut is snug against the Thrust Washer (piece #46).
17. Remove the Declutch Housing (piece #2) and make sure the set screw hole is aligned with the spot mark on the Bearing
Cartridge Stem threads. Tighten Cartridge Stem Locking Nut set screw.
18. Reinstall Declutch Housing with Gasket (piece #80).
19. Install Gear Mounting Bracket Assembly (pieces #8, #65, and #93).
20. Install Handwheel Gear (piece #6) and Spirolox Ring (piece #107).
21. Install Splined Insert (piece #54), Spring Washer (piece #61), and Clutch Compression Spring (piece #68).
22. Install Sliding Clutch Gear (piece #51) onto Hollow Drive Shaft (piece #55) splines.
23. Install Solid Drive Shaft (piece #43), ensuring that the Clutch Gear Spacer (piece #47) is in place. Align splines on the Solid
Drive Shaft and Output Worm Shaft Gear and push the Drive Shaft into the Housing (piece #1) from the
declutch end.
24. Mount Handwheel Shaft Bearings (pieces #94 and #97) on the Handwheel Shaft and Pinion (piece #40) and install assembly
into the Housing.
25. Install the Declutch Shaft (piece #30) and Torsion Spring (piece #57) into the Declutch Cap (piece #59).
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