Limitorque LY Series - 7.3.2 LY 1001 Reassembly

LMAIM1501 LY Installation and Maintenance for LY 1001, LY 2001 and LY 3001 7-3
Remove Worm Shaft Assembly
11. Remove four Screws (piece #61) and four Lockwashers (piece #62) to remove Disc Spring Cap (piece #5).
12. Remove Disc Spring Cap (piece #5) and O-Ring (piece #135).
13. Rotate Worm Shaft Assembly CCW. 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
14. Remove the Handwheel Clutch (piece #16), Compression Spring (piece #154), Clutch Sleeve (piece #13),
Thrust Washer (piece #26 [2 pcs]), and Thrust Bearing (piece #27).
15. Remove two Screws (piece #63) and two Lockwashers (piece #64) from the Handwheel Cap (piece #34).
16. Remove the Handwheel Assembly as one piece, (piece #41, 112, 34, 137, 134, 155 [2 pcs], 154, 70, and 37).
Remove Drive Sleeve
17. Remove O-Ring (piece #129) and Bearing (piece #33) from the top of the Drive Sleeve (piece #10).
18. Remove the Drive Sleeve (piece #10).
Remove Declutch Assembly
19. Remove Roll Pin (piece #121) and remove Declutch Lever (piece #45).
20. Push the Declutch Assembly (piece #46, 123, 44, and 55 [2 pcs]) up through the Housing and remove.
Remove the Declutch Return Spring (piece #47).
21. Remove O-Ring (piece #138) from the Housing.
Remove Input Worm Gear
22. Remove the Retaining Drive Ring (piece #114).
23. Remove Input Worm Gear (piece #18) from the Ball Bearing (piece #24).
7.3.2 LY 1001 Reassembly
a DANGER: HAZARDOUS VOLTAGE. Turn off all power before reassembling your LY actuator.
All piece numbers refer to Figures 6.5, 6.6, and 6.7.
Install Input Worm Gear
1. Install Input Worm Gear (piece #18).
2. Install External Retaining Drive Ring (piece #114) on Input Worm Gear.
Install Declutch Assembly
3. Install Declutch Return Spring (piece #47), making sure one end of Spring is secured behind the Rib of the
actuator housing and the other end is secured behind the bottom Declutch Fork of the Declutch Fork
Assembly.
Flow Control Division
Limitorque Actuation Systems