Page 1
Figure 1-1. Hydraulic Block Diagram
1-1. General
Electro-Hydraulic System
The hydraulic system (with the exception of the
hydraulic cylinders and hoses) is contained within
the base of the table. The hydraulic valves and
pump are electrically controlled by the use of a
hand-held push button pendant control. The power
requirements for the table are 120 VAC, 5 amp, 60
Hz.
The table contains the following components. Refer
to the block diagram (figure 1-1) for relationship.
a. Oil Reservoir - Main oil supply. Approximately
two quarts.
b. Motor/Pump Assembly - A positive displace-
ment gear type pump provides the necessary oil
pressure and volume.
c. Pressure Relief Valve - Provides an alternate oil
path when the hydraulic cylinders reach the end of
their stroke.
d. Electro/Hydraulic Mini-Valve Assemblies -These
direct the fluid to the appropriate hydraulic cylin-
ders.
SECTION I HYDRAULIC SYSTEM
041905.020MJ
ELEV BRAKEKIDNEYLEGBACKFLEXTILTTREND
1
1
2
3
2
2
5
42
779
68
48
10
10 11
11
12
10
1 3 5
6
79
11
MOTOR/PUMP
ASSEMBLY
PLUMBING
TERMINAL
ELEVATION
CYLINDER
TRENDELENBURG
CYLINDER
TILT
CYLINDER
BACK SECTION
KIDNEY LIFT
LEG SECTION
PRESSURE
RELIEF VALVE
(4) BRAKE ASSEMBLIES
EMERGENCY
BRAKE RELEASE
MINI-
VALVES
3
45
67
89
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