7-8 LY Installation and Maintenance for LY 1001, LY 2001 and LY 3001 LMAIM1501
Install Handwheel Assembly
12. Install the Clutch Sleeve (piece #13), ensuring the Declutch Fork Assembly (piece #46) is between the Input
Worm Gear (piece #18) and the Clutch Sleeve (piece #13).
13. Install Thrust Washer (piece #26), Thrust Bearing (piece #27) and second Thrust Washer (piece #26) into the
Handwheel Clutch (piece #16).
14. Put a light coat of grease on the Thrust Bearing. Install Spring (piece #17) into the Handwheel Clutch.
15. Install Handwheel Clutch Assembly (pieces #16, 17, 26 [2 pcs], and 27) into the Housing. Push remaining
Worm Shaft Assembly into the Handwheel Clutch of the Handwheel Clutch Assembly.
16. Install O-Ring (piece #135) over the Worm Shaft Assembly Bearing.
17. Install Bearing Cap (piece #5) and Hardware (pieces #61 and 62).
LY 2001 Handwheel Assembly
18. Install Handwheel Assembly (pieces #146, 41, 112, 69, 192, 134, and 37).
19. Install Hardware (pieces #70 and 71).
20. Go to Step 22.
LY 3001 Handwheel Assembly
18. Install the Handwheel Gear Assembly (pieces #119, 35, and 37).
19. Install the Handwheel Pinion and Idler (piece #43) and Idler Shaft (piece #42).
20. Install the Handwheel Assembly (pieces #146, 41, 112, 136, 39, 34, 137, 116, 115, 38, and 36).
21. Install Screws (pieces #63 and 65) and Lockwashers (pieces #64 and 66) to secure the Handwheel Assembly
onto the housing.
Install Input Worm Motor Pinion Assembly
22. Install Input Worm Motor Pinion Assembly (piece #52, 53, 124, and 31) into the Housing.
23. Install Housing Seal (O-Ring) (piece #131).
Grease Unit
24. Grease unit with the properly recommended grease. (See Section 7.1, Lubrication.)
Install Top Plate
25. Install Top Plate (piece #2) and Hardware (piece #88 and 89).
NOTE: If Top Plate will not fit properly, check Bearing (piece #33) and Declutch Shaft (piece #44) for proper
alignment into Top Plate molding.
Install Torque Switch Assembly, Motor Assembly, and Limit Assembly
26. Install Torque Switch Assembly with Gasket (piece #8) and Hardware (piece #97 and 98).
27. Install Limit Switch (piece #7) with Hardware (piece #79 and 80).
28. Reconnect Limit Switch, Torque Switch, and Terminal Strip. Refer to the actuator wiring diagram for proper
wiring configuration.
Install Control Cover
NOTE: Before installing the Control Cover, reset the Limit Switches and Mechanical Stops. Recheck motor for
proper rotation.
29. Install Cover O-Ring (piece #130).
30. Install Control Cover (piece #3) with Hardware (piece #67 and 68).
Flow Control Division
Limitorque Actuation Systems
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