its way into the field and breaks off after it is installed on the
complete circuit, and then into the fluid. All of these are potential
contamination points. If contamination makes its way into a valve
on the pump it can cause sticking and premature failure. And
there are several valves on the circuit. So if any of the valves
stick it can fail in a variety of ways.
Here are some of the more common ways valves
stick…
-1) relief valve is relieving at too low of a pressure and the
unit it lifting less weight.
-2) the dump seems to be working fine but it will only go
up. Or only go down. This can also be an electrical issue.
-3) the system will not hold in its last position
Most of the valves can be removed pretty easily. Like always
make sure the bed of the dump trailer is down before removing
any valves. And if it is a tilt bed or any other hydraulic circuit
make sure the hydraulics are not under load while removing
any valves. There will usually be a little bit of a hydraulic mess
when doing these types of procedures. It is a good idea to put a
shop rag around the valve you are removing so if the fluid does
come squirting out it hits the rag instead of you or your clothes.
Once you have a valve removed you can give it visual inspection.
Sometimes the obstruction is obvious like a piece of dirt or a
piece of cloth. Remove the contaminate and clean the valve the
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best you can. Like with some shop cleaner or shop air gun. Be
careful not to damage the valve.
Warning: Do not perform any of these troubleshooting
procedures while the dump bed is in the up position. If the
dump bed is stuck in the up position, then attempt to jump the
battery with a running vehicle, or replace the battery. If this does
not work then contact Premium Supply for other options to
consider.
There are many other ways to put your hydraulic system in the
best possible position to have the fewest possible problems.
Contact Premium Supply for more recommendations that can
decrease down time. Which in turn increases production and
bottom line money.
These troubleshooting recommendations are simply ideas
that can be considered for someone who is in the field and
may have minor, “common issues”, that can be resolved easily.
If these recommendations do not work than take the trailer
to a qualified hydraulic repair company near you. Premium
Supply does not assume any responsibility or liability for the
implementation of any of these troubleshooting ideas.
www.premium-supply.com • 1-866-934-0777
NATDA Magazine
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