7-6 LY Installation and Maintenance for LY 1001, LY 2001 and LY 3001 LMAIM1501
Remove Input Worm Motor Pinion Assembly
10. Remove Input Worm Motor Pinion Assembly (piece #52, 53, 124, and 31).
Remove Worm Shaft Assembly
11. Remove four Screws (piece #61) and four Lockwashers (piece #62) to remove Bearing Cap (piece #5).
12. Remove Bearing Cap (piece #5) and O-Ring (piece #135).
13. Rotate Worm Shaft Assembly counterclockwise. The Worm Shaft Assembly should travel out of the Housing.
Once it has reached the end-of-travel, pull the remaining Worm Shaft Assembly out; Clutch Sleeve (piece #13)
will slip off the Worm Shaft Assembly. In the event that the Worm is stripped, the Worm Shaft Assembly will
need to be completely replaced.
NOTE: If Light Spring Pack or Heavy Spring Pack replacement is necessary, contact your Limitorque
authorized dealer or the Limitorque Service Department for a complete Worm Shaft Assembly replacement.
Remove Handwheel Assembly (LY 2001)
14. Remove the Handwheel Clutch (piece #16), Compression Spring (piece #17), Clutch Sleeve (piece #13),
Thrust Washer (piece #26 [2 pcs]), and Thrust Bearing (piece #27).
15. Remove four Screws (piece #70) and four Lockwashers (piece #71) from the Handwheel Cap Plate
(piece #69).
16. Remove the Handwheel Assembly as one piece (pieces #146, 41, 112, 69, 192, 134, and 37).
17. Go to Step 19.
Remove Handwheel Assembly (LY 3001)
14. Remove the Handwheel Clutch (piece #16), Compression Spring (piece #17), Clutch Sleeve (piece #13) and
Thrust Washer (piece #26 [2 pcs]), and Thrust Bearing (piece #27).
15. Remove Screws (pieces #63 and 65) and Lockwashers (piece #64 and 66) from the Spur Gear Cover
(piece #34) of the Handwheel Assembly.
16. Remove the Handwheel Assembly as one piece (pieces #146, 41, 112, 136, 39 [2 pcs], 34, 137, 116, 115, 38,
and 36).
17. Remove the Handwheel Pinion and Idler (piece #43) and Idler Shaft (piece #42).
18. Remove the Handwheel Gear Assembly (pieces #119, 35, and 37).
Remove Drive Sleeve
19. Remove the Roll Pins (piece #174) located in the end of the Mechanical Stop Screws (piece #58).
20. Remove the Mechanical Stop Screws (piece #58), Locking Nut (piece #59), Thread-Seal (piece #60), and
Retaining Washer (piece #184).
21. Remove O-Ring (piece #129) and Bearing (piece #33) from the top of the Drive Sleeve (piece #10).
22. Remove the Drive Sleeve (piece #10).
Remove Declutch Assembly
23. Remove Roll Pin (piece #121) and remove Declutch Lever (piece #45).
24. Push the Declutch Assembly (pieces #46, 48, 123, 122, and 44) up through the Housing and remove. Then
remove Declutch Return Spring (piece #47).
25. Remove O-Ring (piece #138) from the Housing.
Remove Input Worm Gear
26. Remove the Retaining Drive Ring (piece #113).
27. Remove Input Worm Gear (piece #18) and Lug Adapter (piece #25) as an assembly from the Ball Bearing
(piece #24).
Flow Control Division
Limitorque Actuation Systems
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