Service Information
26
FOWLER LIFT MOTOR/ACTUATOR REPLACEMENT (CONTINUED)
8. Using a 5/16” ratchet and extension, remove the two screws from the bottom mounting bracket under the
actuator assembly. Support the foot end of the stretcher using a sawhorse or the equivalent. Using a 1/2”
wrench or socket and ratchet, remove the bolt holding the litter support tube on top of the jack to the litter
roller assembly and swing the litter support aside. Using a 7/16” socket, remove the bolt holding the foot
section to the Gatch motor tube and pivot the foot section completely back.
9. Pull the ”Y” shaped bracket off the end of the lift motor tube and remove the actuator assembly from the
enclosure. Install the new actuator assembly and the two screws in the bottom mounting bracket. Install
the two inner bolts through the motor mounting brackets. Reattach the litter support tube to the litter roller
assembly. Reattach the Gatch motor tube to the Gatch. Lift the Fowler and install the ”Y” shaped Fowler
bracket onto the end of the Fowler motor tube. (It will be necessary to trip the quick drop latch). Grease
the motor tube, if necessary. Install the two stops (E) on the sides of the Fowler motor tube using the
screws and adhesive provided with the new actuator.
10. Install the gas cylinder with the large diameter end toward the foot end of the stretcher. Install the small
(head) end first, then move the Fowler until the foot end of the cylinder can be popped on. Plug the black
motor cable into the logic circuit board and plug the stretcher power cord into a properly grounded wall
receptacle. Inspect and test the lift and quick drop systems. (Trip the quick drop at the latch under the
Gatch. Do not attach the cable yet.) If the Fowler or Gatch do not lower or raise properly and the limit
switches need to be adjusted, see the procedure on page 28.
11. Insert the cable outer cover into the Fowler actuator bracket and secure it with the set screw. Thread
the cable through the quick drop release lever on the actuator and through the cable cover and the release
lever. Keep the cable taut between the two washers on the release lever (but not holding the latch open)
and tighten the nut and bolt holding it in place. Rotate the red lever to test the quick drop function for
proper operation. Glue the black cap on the end of the cable.
12. Reinstall the enclosure cover and the Knee Gatch guides with the four socket head cap screws. When
installing the Knee Gatch guides, be sure the large hole in the guide is toward the foot (crank) end with
the ridged side of the guide facing out. Install the two sheet metal screws. Inspect and test the stretcher
before returning it to service.
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