WALTCO WDV, Техническое руководство

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PLATFORM WILL NOT OPEN OR CLOSE
*To open press open and up, to close press close and up.
IF MOTOR DOES NOT RUN: SEE MOTOR DOES NOT RUN
•
Check voltage on (S1 & S2 for power open function / S1 only for
power close function) valves while the controls are activated. Check for
10.5 volts at the coil. Test the coils ( 4.5ohms ) Confirm that the valve is
magnetizing. If coils are working the valve may need to be replaced
•
If there is no voltage to the coils, check all cables and wires for shorts and
poor connections.
•
Low Pressure If platform does not close, check pressure on gauge.
Open pressure should be 1600 – Close pressure should be 2700 psi
•
Check for any mechanical obstructions or any mechanical damage. Look
for any broken or bent parts that could interfere with normal operation.
•
Orifice in Power close cylinder is clogged or POC cylinder is bypassing
•
Pilot activated check valve in power unit may be faulty. (OPENING ISSUE
ONLY)
*IF THE PLATFORM WILL ONLY OPEN OR ONLY CLOSE
•
Check power on valve ( S1 ) and ( S2 ) while the up button is activated.
Feel for a pulse on the valve and listen for the clicking noise. Confirm
that the valve is receiving at least 10.5 volts and magnetizing. If both
coils are magnetizing, the valve maybe faulty.
•
If you are getting power to both coils and you have checked that the
valve is working fine, the orifice built into the open and close cylinder
may be blocked. The orifice is a small hole that restricts the oil flow.
Remove cylinder and try cleaning ports. The hole in the orifice should be
no larger than 1/64”. A welding tip cleaner can be used to clean the hole
if it is contaminated.
PLATFORM OPENS OR CLOSES TOO SLOW
*Correct speed is 10s-13s open and close
1. The hydraulic cylinder that power closes and opens the platform has
orifices. Platform should be lowered to the ground and the cylinder
removed for inspection. The hole in the orifice should be no larger than
1/64”.
PLATFORM WILL NOT LOCK PROPERLY ON BOTH SIDES
1. Raise the liftgate platform to the top before locking the platform. Hold the
button at the top for 5-10 seconds to re level the platform. Sometimes if
the platform goes out of sync it may need to be re leveled at the top before
it goes into the locks properly.
2. The upper stop on the driver side runner may need to be adjusted
3. Check and confirm the travel latch engagement. If the travel ear engages
the passenger side cam less than 3/8 add the retaining ring ( 75001012 ) to
the driver side hinge pin.
Troubleshooting Guide
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