Ohmeda 3000 - Hydraulic System and Caster Repairs

5/Disassembly and Repair
С. Вей Platform Disassembly
(Figure 5-12)
1. Remove the mattress and the Plexiglas cover.
2. Remove the four side panels from the bed plat-
form.
3. Remove the four comer blocks from the bed plat-
form.
4. Use a 1/2 inch wrench and 7/16 inch wrench to
remove the hydraulic system mounting nut and
stud from the lower support.
5. Use a No. 2 Phillips screw driver and remove the
four retaining rods and hooks from the bottom of
the bed platform.
6. Slide the two bed pivot rods out from each side.
7. Lift the bed platform off the lower support.
D. Bed Platform Assembly
(Figure 5-12)
1. Place the bed platform in position on the lower
support.
2. Insert the two bed pivot rods into position on the
lower support. The notch must face the bed plat-
form (upwards) and be positioned between the
notches in the bed platform.
3. Use a No. 2 Phillips screw driver and install the
four retaining rods and hooks on the bottom of
the bed platform. The open end of the.hooks
should face away from the bed platform.
4. Use a 1/2 inch wrench and 7/16 inch wrench to
install the hydraulic system mounting nut and
stud on the lower support.
5. Replace the four corner blocks on the bed plat-
form.
6. Replace the four side panels on the bed platform.
7. Replace the Plexiglas cover.
8. Replace the mattress.
E. Hydraulic System Removal
(Figures 5-13 and 5-14)
Note: Ohmeda recommends replacing the hydraulic
system as an assembly. The system uses a standard
synthetic hydraulic oil.
Note: The unit may be carefully placed on it's right
side (looking from the front) or the bed may be re-
moved for replacement of the hydraulic system.
1. Use a 1/2 inch wrench and 7/16 inch wrench to
remove the hydraulic system mounting nut and
stud from the lower support.
2. Remove the two Phillips head mounting screws
which hold the outer (triangular shaped) cover
plate in position.
3. Remove the four Phillips head mounting screws
which hold the inner (square shaped) cover plate
in position. Take care to ensure that the tension
on the spring is released carefully.
Note: The tilt lever, rod, spring, and mounting pin
can be removed for replacement if necessary. Re-
move the pin from the top of the bed to remove the
spring and rod.
4. Note how the tubing is installed in parallel and
does not overlap until it reaches the storage
area.
5. Remove the hydraulic system assembly for re-
placement.
F. Hydrualic System Installation
(Figures 5-13 and 5-14)
1. Transfer the mounting pin from the old hydraulic
cylinder to the new hydraulic cylinder.
2. Place the hydraulic cylinder with pin in position.
3. Install the tubing for the hydraulic system in
parallel and make sure it does not overlap until it
reaches the storage area.
Note: The tubing must not be stretched, pinched or
kinked during reassembly. If the tubing is pinched
the bed will not tilt.
4. Place the inner (square shaped) cover plate in
position.
5. Install the two mounting screws closest to the
tilt lever,
6. Install the two mounting screws closest to the
cylinder at the edge of the cover plate.
7. Coil the tubing so it fits in the triangle area.
8. Place the outer (triangular shaped) cover plate in
position and replace the two Phillips head mount-
ing screws.