7765 National Turnpike – Unit 190
Louisville, Kentucky 40214
(800) 666-2811
DIMENSIONS
Stairway Opening &
Height
22½ x54”x105” MAX
22½ x 54” x 120” MAX
25½ x 54” x 105” MAX
25½” x 54” x 120” MAX
30” x 60” x 105” MAX
30” x 60” x 120” MAX
MODEL
250 lb. Rated
(Wood)
S224P
L224P
S254P
L254P
MODEL
300 lb. Rated
(Wood)
CS224P
CL224P
CS254P
CL254P
S300P, S305P
L300P, L305P
MODEL
350 lb. Rated
(Aluminum)
AS226P
AL226P
AS256P
AL256P
AL258P
WARNING!
Louisville stairway replacement parts are intended for use on Louisville attic
stairways only.
DO NOT use these or any other Louisville replacement parts on any stairway
other than Louisville products; serious bodily injury or damage to the stairway
could occur. Replacement of both power arms and springs is recommended. If
when replacing the power arm the old springs measure more than 10¼”
(measured from end to end with the door closed and the springs in the relaxed
position), then it will be necessary to replace these springs with new spring.
Contact Louisville Ladder for correct part number. Always wear safety glasses
when repairing your ladder.
Instructions for Replacing Power Arm Assembly
Two people are required when replacing parts or adjusting this attic stairway.
Materials and Tools Required:
Flashlight
7/16 open end wrench
1/4” drill
½” open end wrench
Hammer
2x4 supports (long enough to reach from floor to ceiling)
Stepladder
(4) 1/4” x 1 3/4” bolts with nuts, or 1/4” x 2½ lag screw
Safety glasses
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Directions:
1.
The stairway must be in the closed position. One person should be in
the attic and the other should be on the ground floor to place a
temporary 2x4 support opposite the hinge end of the stairway to
secure the stairway in the closed position.
2.
With the temporary support in place under the stairway door, the
tension springs can be removed by removing the nut from the carriage
bolt that attaches to the side rail of the top section of the unit. Remove
the power arm. This will eliminate the initial tension that is on the springs.
Under no circumstances are the springs to be removed without a
temporary support under the closed stairway door.
3.
After both tension springs are removed, the door may be slowly
opened to remove the power arm. DO NOT stand on the stairway to
remove or adjust any part of the stairway – a separate step ladder
should be used to reach the power arm for replacement.
4.
The power arms can be removed from the stairway by drilling or
grinding off the two rivet heads that secure the square pivot plate to
the fixed sides of the stairway. The power arm is attached to the
climbing section with a 5/16” bolt and nut. Remove the nut using a ½”
open-end wrench or ratchet, drive the bolt out, and the stairway
power arm assembly should be free of the stairway.
5.
To replace, place the new power arm pivot plate in the exact location
of the one removed, drill a 1/4” hole through the pivot plate holes (The
ones not used by the rivets), into the side of the stairway. Attach the
pivot plate with two 1/4” x 1 ¾” bolts and nuts (not included) or use ¼”
x 2 ½” lag screws (not included), through the stairway frame and into
the ceiling joist. Lag screws should only be used when the distance
between the stairway frame and ceiling joist is so small that a nut and
bolt cannot be used.
6.
Attach the power arm to the climbing section with the bolt and nut
that was removed to remove the old power arm.
7.
Repeat this process for replacing the power arm on the opposite side
of the stairway.
8.
Once the power arms have been replaced, close the stairway and
reposition the temporary support under the stairway door.
9.
Re-install the tension springs.
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10.
The temporary support can now be removed and adjustments to the
spring tension can be made, the door does not close completely,
tightening of the spring is necessary. This can be done by moving the
spring to the next hole in the power arm. When adjusting the spring
tension, always close the door and install the temporary support under
the door. The spring should never be adjusted with the door open.
11.
The temporary support can now be removed and the stairway is ready
for use.
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