Maintenance Procedures Chapter 4
33
B. Grab the new actuator tube and position its holes horizontally. While holding the tube
firmly to prevent it from rotating, press the Knee Gatch up control for a few seconds
and then press the down control until the actuator stops. This will be the lower limit of
the actuator course.
C. Gently turn the tube in either direction to align the tube holes with those of the thigh
section lever arms. Then raise again the Knee Gatch a few inches while holding firmly
the tube and lower it completely.
D. Check the alignment of the holes. If the tube holes are not aligned any more with those
of the lever arms, repeat steps B and C until they are. Once the holes aligned, install
the washers and the clevis pin. Slightly raise the thigh section manually to ease the
insertion of the clevis pin.
E. Before installing the rue ring cotter to finalize the actuator replacement, raise and lower
completely the Knee Gatch. Check that the actuator stops working as soon as the thigh
section reaches the frame.
HI-LO ACTUATOR REPLACEMENT
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E
E
In order to preserve the adjustment of the bed lowest position when replacing a Hi-lo actuator, a
special tool kit designed for that purpose must be used. The kit includes alignment jigs. To
obtain this kit, contact our Technical Service department (see section 1.2) and order part
number KR0154.
Required Tools:
Tool Kit KR0154 Cutting Pliers 5/16" Socket Wrench
Angle Indicator Small Slotted Head Screwdriver 1/2" Wrench
Procedure:
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O
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Unless otherwise indicated, refer to figure 4.3B on page 30 for the illustration of this procedure
reference points.
1. Position the mattress support sections depending on the location of the Hi-Lo actuator to
replace:
At the foot of the bed: Remove, if applicable, the plastic section (optional) of the foot
section. Fully raise the thigh section, and lift and fold back the foot section toward the head
end of the bed. Finally, using an angle indicator, raise the Fowler by approximately 30°.
At the head of the bed: Remove, if applicable, the plastic cover (optional) of the head
section and fully raise the Fowler.
2. Position the alignment jigs on
the floor right under the Hi-Lo
levers and lower the bed until
the levers come to rest on the
jigs (see opposite illustration).
Use a 3/8" socket wrench with
the 1/2" socket provided in the
kit to lower a defective Hi-Lo
actuator until the lever rests on
the jig.
3. Unplug the bed power cord from the wall outlet.
4. Disconnect the actuator cable and clip, using cutting pliers, the cable ties holding it to the
frame.
5. Using a 5/16" socket wrench, remove the two screws (i) holding the retaining plate to the
actuator support.
L
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