Stryker Medical 2025, Maintenance Manual

Page: 18 / 140

Maintenance Procedures – Base
17
HYDRAULIC PUMP AND MOTOR REPLACEMENT
Required Tools:
#2 Phillips Screwdriver Small Standard Screwdriver 11/16” Open End Wrench
Bungee Cords (or Equivalent) Saw Horses (or Equivalent) 3/8” Socket Wrench
Wire Cutters 9/16” Open End Wrench
Replacement Procedure:
1. Raise the litter up to full height and unplug the bed power cord from the wall socket.
2. Support both ends of the litter top with sawhorses or the equivalent.
3. Using a #2 Phillips screwdriver, remove the three Phillips screws holding the base hood to the base frame.
4. If the bed is equipped with the 110V outlet option, remove the slotted screw holding the outlet cover. If
the bed does not have the 110V outlet option, remove the two slotted screws holding the cover plate.
5. Use bungee cords or the equivalent to secure the hood up and out of the way.
6. Using a 3/8” socket wrench, remove the three bolts holding the pump motor cover to the base and remove
the cover.
7. Using wire cutters, cut the wire tie holding the motor power and capacitor cables. Unplug the cables, not-
ing the location of each so they will be reconnected properly.
8. Using a 11/16” open end wrench, remove the two return line fittings from the pump.
9. Using a 9/16” open end wrench, remove the two pressure line fittings from the pump. Note the location
of each fitting so they will be reconnected properly.
10.Using a 3/8” socket wrench, remove the four bolts holding the pump motor to the brackets and remove
the motor.
11. Reverse the above procedure to install the new pump and motor assembly and reinstall the base hood.
12. Run the bed up and down a few times to verify proper operation before returning it to service.