Page 20
Problem
Table will not elevate properly
Table will not descend properly
Table loses elevation
Reason
Pressure Relief Valve Not Set Properly
Low on Oil
Spool Valve Not Centered
Defective Pump
Defective Mini-Valve
Defective Solenoid or Wiring
Defective Relay Box or Pendant Control
Leaking Cylinder Hose
Uneven Weight Distribution
Incorrect Speed Adjustment
Defective Check Valve
Spool Valve Not Centered
Galled Slider Assembly
Defective Solenoid or Wiring
Defective Relay Box or Pendant Control
Uneven Weight Distribution
Defective Check Valve
Leaking Mini-Valve
Loose Fittings, Joints, Hoses
Leaking "O" Ring Inside Cylinder
3-3. ELEVATION DIAGNOSIS CHART
Figure 3-1. Elevation Circuit
SPEED CONTROL
CHECK VALVE
MINIVALVE
MAIN PLUMING
TERMINAL
COPPER
LINE
FLEXIBLE
HOSE
SECONDARY
PISTON O-RING
PRIMARY
PISTON O-RING
82206-301
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