11921
Slauson
A
ve.
Santa
Fe
Springs,
CA.
90670
(800)
227-41
16
FA
X
(888)
771-7713
PAGE 25
PLATFORM RAISES SLOWLY
1.
Verify that power is being supplied to
Terminal “A”. Recharge the battery if less
than 12 Volts registers on the Voltage
Tester.
(See Fig. 1)
2.
Lower the opened Platform to the ground.
Fill the Pump Reservoir to within 1” from
the top with the recommended hydraulic
fluid.
3.
Verify the Pump Motor is grounded to the
vehicle frame.
4.
Check for leaking hoses and fittings.
Tighten or replace as required.
5.
Check for structural damage or lack of
lubrication. Replace worn parts.
6.
Check the Filter in the Pump Reservoir. Replace if necessary.
7.
With Platform on the ground, remove the pressure hose and fitting from the Pump and
replace it with a 0-3000 PSI Pressure Gauge. Hold the switch in the “UP” position.
Adjust the Relief Valve on the side of the Pump until the gauge shows 2800 to 3000 PSI
(See Fig. 2).
8.
With the Platform on the ground, remove breather plug or vent line from vent port of
cylinder. Raise the Platform to bed level. If hydraulic fluid streams from the Vent Port,
FIGURE 2
FIGURE 1
FLOW
CONTROL
VALVE
FIGURE 3
Vent Port
Pressure
Port
the Piston Seals are worn.
(See Fig. 3)
Replace
the Seals.
9.
Check the Flow Control Valve. The arrow on the
valve shows the direction of flow that is re-
stricted, and Must point back to the Pump.
(See
Fig. 3)
Pressure
Gauge
Terminal
“A”
Relief Valve
Adjust Screw
