Alarm Lock Lever Return Spring Replacement Kit User Manual
LEVER RETURN SPRING REPLACEMENT KIT
© ALARM LOCK 2006 Publicly traded on NASDAQ Symbol: NSSC www.alarmlock.com
REPLACE THE LEVER RETURN SPRING (PART HW1221). APPLICABLE MODELS: EDTL, ETPDL, DL3500, PDL3500, DL4500, PDL4500
Slide Plate Springs
Spindle
Bushing
Assembly
Locking Piece
(with small spring)
Slide Plate
WI1498 3/06
Remove eight (8) Rear
Cover Plate screws
1. With outside housing removed
from door, unscrew eight screws
and remove the Rear Cover
Plate as shown.
Rotates when
handle is turned
Rotate handle
Plastic Cover Plate
5. In order to remove the Plastic
Cover Plate, you must first turn
the handle (or insert screwdriver
to turn as shown).
(Leg)
(Tab)
(Leg)
9. Replace with new Lever Return
Spring in same manner as old
spring (legs must be deflected as
shown in step 10).
Slide Plate
2. Remove the Spindle Bushing
Assembly and set aside. Remove
Locking Piece (and the small spring
attached to it).
Plastic Cover Plate
6. With the handle turned, lift off the
Plastic Cover Plate and carefully set
aside. Note the tamper switch is
attached to the Plastic Cover Plate.
(Tab)
(a)
(c) (d)
(b)
10. (a) Place inner leg against left side
of tab. (b and c) Deflect outer leg
past tab. (d) Outer leg "springsback" against the tab.
3. Remove Slide Plate. Remove Slide
Plate Springs.
"C" Retainer
Ring
7. Remove "C" Retainer Ring from
front of lock with special tool.
11. Slide the Spindle Bushing Assembly back into place. Ensure the
spring legs engage with the central
boss.
Plastic Cover Plate
4. Remove the 3 screws that hold
down the Plastic Cover Plate.
Lever Return
(Legs)
Spring
Spindle Bushing
Assembly
8. With "C" Retainer Ring removed,
the Spindle Bushing Assembly can
slide out. Remove the Lever Return
Spring.
Plastic Cover Plate
12. With the handle turned, carefully
replace the Plastic Cover Plate.
Ensure tamper switch wires run to
the side and are out of the way.
Slide Plate Spring
Plastic Cover Plate
13. Release handle. Insert the 3
screws that hold down the Plastic
Cover Plate. Replace Slide Plate
Spring. Do not insert second spring.
Two springs
"White gear"
Slide Plate
Worm Gear
17. Hold Slide Plate in place. Turn
worm gear until "white gear" centers in
the worm gear threads. As the Slide
plate moves as the worm gear turns,
ensure the two springs are equally compressed.
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Slide Plate
14. Brush all moving parts with
grease. Replace Slide Plate.
Locking Piece
(with small spring)
Slide Plate
18. Replace Locking Piece as
shown. Insert its small spring first
and push down to lock in place.
Ensure tamper switch wires do not
obstruct reassembly.
15. Insert second Slide Plate Spring
into opening of Slide Plate as
shown.
Slide Spacer
Post Bushing
19. Replace the Spindle Bushing and
reattach the Slide Spacer (black).
Ensure the spacer and the Post
Bushing are replaced.
16. Use small screwdriver to compress the spring. Be sure spring is
fully inserted into opening.
20. Insert wires through Rear Cover
Plate as shown and replace Rear
Cover Plate and secure with eight
(8) screws.
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