My new KB2485 Hoe has no power

[murphy1244]

So i look through the owners manual on the hoe and I see a in/out hose kit with the return going into the hyd fill.

I wonder if thats the problem?

Did you not read post 5?

 

[J_J]

The port that the BH is plugged in, is it controlled by a lever and is it detented or bungeed open?

Is the rear port controlled by a solenoid, such as a 3rd function.

If your return hose from your BH has a QD fitting, remove it and send the BH return fluid to tank/filer cap.

 

[rjwerth]

I'd love to hear if switching the return to the fill port does anything. Mine is still hooked to the remote port and seems to be just fine...but I still wish for more power.

 

[Coyote machine]

I'd love to hear if switching the return to the fill port does anything. Mine is still hooked to the remote port and seems to be just fine...but I still wish for more power.

The correct way for the KB-2485 to be hooked to the DK-40, 45, 50 series tractor is: one line into either A or B of the rear remote(s), and the return line into the fill port on the right rear of the trans, where the vent/fill port is located. Then the vent ends up on the left rear of the trans. There is a Kioti conversion kit to allow the new placement of the vent tube.
This is a MUST have to get the full power from the hoe, and for proper cooling/flow of the hyd fluid.
My dealer did the kit on both my DK-35 and DK-40.
Get your dealer to fix it- and I would't run it until it's fixed, no need to overheat, possibly, the new tractor's hyd fluid.
Sorry for your troubles, it will work great when fixed properly.:thumbsup:

 

[grm61]

Thank you everybody, problem is fixed, the Dealer came out this evening and we put the kit on with the return to the hyd fill and breather hose in the trans etc.

Twice the power, it works correctly now.

Murph, thankyou, I wasn't ignoring your post, I just didn't know that it would have anything to do with the power output.

After reading the book it clearly showed the kit for that.

rjworth I don't know if the DK50 is affected but it fixed mine.

Thanks again everyone.

 

[rjwerth]

Hmmm my dealer has an adaptor. Think I'll have to try this next week when I get back. Thanks for the info.

 

[J_J]

Thank you everybody, problem is fixed, the Dealer came out this evening and we put the kit on with the return to the hyd fill and breather hose in the trans etc.

Twice the power, it works correctly now.

Murph, thankyou, I wasn't ignoring your post, I just didn't know that it would have anything to do with the power output.

After reading the book it clearly showed the kit for that.

rjworth I don't know if the DK50 is affected but it fixed mine.

Thanks again everyone.

Just curious about the lack of power.

Did you ever check the BH relief pressure.

You said the BH valve went into relief in your first post, which tells me the pump is working well, and the hyd components are developing the power.

If a hyd system, the BH for instance, has low power, the power is developed by the load on the hyd system. A pressure loss or leakage will cause a loss in power.

Any speed of operation problems can be attributed to GPM's.

A reduction of pressure will cause you to lose power, and that can come about by back pressure working against the pump pressure.

Excerpts:

Back pressure occurs when hydraulic flow in the return line is restricted and causes a buildup of pressure backward through the line. This is undesirable as it robs the entire system of potential flow as the pump now has to produce more power to overcome the back pressure. Hydraulic motors in particular cannot handle excessive back pressure and will prematurely fail if exposed for any length of time.

There are a number of things we can do to reduce back pressure and increase the efficiency and longevity of our implements.

The fix.

Free flowing return for hydraulic motors. Back pressure is most commonly caused by routing the return line back through the pump spool and valve block, this is very useful if we need to have double action (such as in a hydraulic cylinder) but not necessary for a hydraulic motor that is only turning one direction. by taking the return line from the motor and returning it directly back into a reservoir tank, we make sure that the hydraulic flow can return completely unrestricted.

If your tractor pressure was 2500 psi, and the BH circuit had a 1000 psi back pressure, the result would be about 1500 psi, decreasing your power.

 

[murphy1244]

JJ, You are something else! You have forgotten more than I'll ever know about Hydraulics.

 

[grm61]

Hmmm my dealer has an adaptor. Think I'll have to try this next week when I get back. Thanks for the info.

Don't forget the vent, Your dealer should have, or can get the whole kit.

 

[Coyote machine]

Hmmm my dealer has an adaptor. Think I'll have to try this next week when I get back. Thanks for the info.

The OP said he was not sure if it applies to the DK-50's. It does, and goes from DK-35 ->50 inclusive. You should notice an immediate boost in power/speed of hydraulic action on you hoe.
Please let us know the results.