Page 10
Figure 1-9. Trendelenburg Cylinder Assy.
3. Lateral Tilt Assembly - The lateral tilt assembly
consists of two cylinders, pistons and connecting
rods. The connecting rods attach to the lateral
tilt lever which connects to the table side frames.
When hydraulic fluid is pumped into one cylinder,
the piston and connecting rod pushes the lateral tilt
lever which tilts the table top to one side. To tilt the
table top in the opposite direction, fluid is pumped
into the opposite cylinder. See figure 1-10.
d. Hydraulic Cylinders (Slave Cylinders)
There are several different types of hydraulic cyl-
inders used in the table that activate the control
functions. With the exception of the elevation and
brake cylinders, all operate basically the same way.
The control functions are listed below.
Back Section ------ 2 double action cylinders
Leg Section -------- 2 double action cylinders
Trendelenburg----- 1 double action cylinder
Lateral Tilt ---------- 1 double action cylinder
Elevation ----------- 1 single action cylinder
Kidney Lift ---------- 2 double action cylinders
Brakes -------------- 4 single action cylinders
1. Back Section and Leg Section Cylinders -
The double action cylinders are closed at one end
and have a movable piston with hydraulic fluid on
both sides. Connected to this piston is a ram or
shaft that exits out of the other end of the cylinder.
Through the use of either a gear, or clevis and pin
arrangement, this ram is connected to a movable
table surface. The movable surface can be moved
one way or the other by pumping hydraulic fluid
into the cylinder on either side of the piston. Obvi-
ously, if oil is pumped into one side of the cylinder,
a return path must be provided for the oil on the
other side. See figure 1-8.
Figure 1-8. Back Section Cylinder
2. Trendelenburg Cylinder Assembly - The Tren-
delenburg tilt assembly consists of two cylinders,
pistons and connecting rods. The connecting rods
connect to the Trendelenburg lever which connects
to the table side frames via the Trendelenburg axis.
When hydraulic fluid is pumped into one cylinder, the
piston and connecting rod pushes the Trendelenburg
lever which tilts the table top. To tilt the table top
in the opposite direction, fluid is pumped into the
opposite cylinder. See figure 1-9.
Figure 1-10. Lateral Tilt Cylinder Assembly
041905.022
BACK
SECTION
O-RING RAM PISTON
HYDRAULIC
LINE
HYDRAULIC
LINE
041905.023mj
TRENDELENBURG
LEVER
PISTONS
041905.024
LATERAL
TILT LEVER
CONNECTING RODS
PISTON
PISTON
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