Dump Trailer 12v pump

[kwbobwi]

Trailer goes up fine but takes forever to come down.
Cleaned the tank and filter.
Dealer was no help, said filter was the problem, than said a safety valve on the cylinder which there is none.
Solenoid clicks when the down button

 

[mrmikey]

It's gravity down, least the ones I've operated are. Only thing that would make it slow going down is a restriction somewhere, valve not opening fully, hose collapsed or restricted, vent plugged on tank, incorrect fluid etc

 

[Tx Jim]

Ditto on checking for a clogged hyd oil restrictor or faulty control valve.

 

[woody]

take the cap off the tank and try it, that would let you know if it is the vent. but if it was the vent I would think you could see the tank swell with pressure.

 

[bdhsfz6]

How long does it actually take to drop?

Even when new, my Bri Mar 12K dump trailer would take more than 2 minutes to drop when empty.
Sometimes, even longer in cold temps. When loaded, it would come down in 10 seconds.

I replaced the 10W hyd. oil with automatic transmission fluid which helped considerably.