Boydstun screw actuator problem

I'm sure many have read your question, but as you are aware that screw unit is kind of in a class by itself, if you have never run one (and I haven't and suspect not many have). I think no info is better than bad info?

 

Guy I know owns one...I will start with a few questions then if I can't give a place to start I will ask him. When you are loosing the power is it on certain switches (positions) or like the PTO is going away on any deck?

 

Do you have a engine driven PTO or just the electric over hydraulic unit? I spoke with a friend that owns one, he said the electric pump motor is known to overheat and this trips the thermal overload protection, it takes a minute or two to reset then the unit works again for a little while. He suggests spending the money to have a PTO installed on your tractor and use it, they don't overheat easily and power the actuator motors much better, much more reliable. Once he upgraded to the PTO option he hasn't had anymore trouble, except the leaky actuator motors, which he keeps two extra ones with him just in case they fail while on the road. He also said to be sure your screws are well lubed, if they get dry or dirt in them the motor struggles to move them causing the hydraulic system to overheat and stop working.

Try these basic troubleshooting techniques as they apply to any electric over hydraulic system. Check for restriction on the hydraulic system, change the filter (if you have one), change the fluid (old worn out fluid takes more effort to pump), check for other restrictions in the hydraulic system, and lastly check for wiring issues to the pump. If you have a loose connection or corrosion you will also overheat the electric pump motor causing a thermal overload. The last thing I would suggest is changing the electric pump motor, this is the most expensive part so you want to change it only if nothing else works. Good luck.

 

My dad was having the same problem on his truck. Turns out he wasn't getting the correct amps or volts ( i forget which) to the main hydraulic pto where everything is housed in. The shop ended up putting a resistor to increase the current. With a screw truck you need to have a good electrical mechanic because theres so much involved. Hope this helps.

 

MERRY CHRISTMAS ! are you still running a setup with Boydstun screw actuator and soft tie etc , we are looking at a 2007 nine car with Boydstun stinger and we are used to our 7 car stacker WALLY MO with conventional hydraulics and 3 point ratchet straps...i am interested in pro cons and or run for the hills ! if easier to call me 615-975-9339 we may or may not be considering this and have to make a decision by weds morning