DK45 FEL capacity issues?

[IXLR8]

There is no relief whine- ever, which I had been expecting to hear. So either I never have any cavitation during relief or never hit relief, which goes along with my original post questions.

Back to your original question, and thinking about it some more. I don't think I have ever heard the 'relief whine' when my loader or BH hit it's limit, on either my CK30 or my DK40. The only thing I hear is a change in tone in the engine like it is working harder and it might drop a few rpm's. I have heard the HST whine on the CK30 when it was working harder than it should have been, I just seem to stall the DK.
J_J has me thinking that maybe the reason I am stalling the DK is the higher flows for both pumps may be conspiring to require more HP when digging and moving at the same time. I need to look into this further.
k0ua- thanks for the power curves. I am going to assume that the curves for the DK40 is basically the same, just lower on the graph.

 

[sdef]

Thanks again to JJ and James K. From JJ's comments and James K.'s torque curve chart, assuming it is the same engine, 1800 - 2000 RPMs should work out well and I would not expect to see the things I am. I guess the pressure testing will confirm it all.

Great information folks.

 

[k0ua]

I posted the DK40 curve, for a minute, but it has to be an error in my manual. as it is the same as the DK35. so I deleted the post. Sorry

 

[murphy1244]

My cap was the vent, replacing it with the return line "seals" up the system, where is the vent now for your tractor?

They put in a curly style vent on the other side of the Trans. My fill cap was changed for a fitting then a 90% fitting them a female Pioneer coupler. We does your Dealer not want to put these kits on?

 

[IXLR8]

They put in a curly style vent on the other side of the Trans. My fill cap was changed for a fitting then a 90% fitting them a female Pioneer coupler. We does your Dealer not want to put these kits on?

The curly style vent is the issue. Mine came as 2 pieces. A fitting with a tube that was bent at a 90deg that screwed into the other side of the trans. Then a curly rubber hose fit on the tube. The tube was too long to allow the fitting to screw into the side of the trans. After I shortened the tube, about 1", to be able to screw fitting into the trans, when tightened the tube faced forward towards the axle, it should have been facing up. When the curly rubber hose was put in place it was up against the axle and it was kinked, closing off the air flow. The instructions indicate that the tube and the fitting are separate making it possible to position the tube at the correct angle for the curly rubber hose to fit/work properly. But in reality the tube and the fitting are now welded together and what direction the tube ends up pointing is a crap shoot. If you want I will take picture when I get home this weekend.
I suspect the dealer is not installing them was for several reasons; he didn't seem to know what they were for, and they are not made correctly and take some modifying to work. He has been in the business for over 30 years and doesn't remember ever installing this kit and doesn't see any reason to.

 

[Coyote machine]

The curly style vent is the issue. Mine came as 2 pieces. A fitting with a tube that was bent at a 90deg that screwed into the other side of the trans. Then a curly rubber hose fit on the tube. The tube was too long to allow the fitting to screw into the side of the trans. After I shortened the tube, about 1", to be able to screw fitting into the trans, when tightened the tube faced forward towards the axle, it should have been facing up. When the curly rubber hose was put in place it was up against the axle and it was kinked, closing off the air flow. The instructions indicate that the tube and the fitting are separate making it possible to position the tube at the correct angle for the curly rubber hose to fit/work properly. But in reality the tube and the fitting are now welded together and what direction the tube ends up pointing is a crap shoot. If you want I will take picture when I get home this weekend.
I suspect the dealer is not installing them was for several reasons; he didn't seem to know what they were for, and they are not made correctly and take some modifying to work. He has been in the business for over 30 years and doesn't remember ever installing this kit and doesn't see any reason to.

Your dealer may have been in the business forever, but the pic below, (borrowed from someone else's setup at: just-bought-dk45se) shows the proper kit and 'new' type vent at the left side of the trans just under the 3PH top link pin. The old red cap is replaced with the screw in male and attached female QD to connect the return line from the backhoe to the fill port for the transmission. There IS a need for this kit. It increases flow to the hoe and keeps the heat down by allowing for more flow and therefore less strain on the hydro pump and associated parts. AND it allows for best performance from the attached hoe. You are the only person I'm aware of that says the new vent portion doesn't fit the application.

http://www.tractorbynet.com/forums/...67d1381530100-just-bought-dk45se-img_1366.jpg

 

[rjwerth]

You are the only person I'm aware of that says the new vent portion doesn't fit the application.

http://www.tractorbynet.com/forums/...67d1381530100-just-bought-dk45se-img_1366.jpg

You missed my experience with the kit then. I had the same problem and had to take a Dremel to the vent to get it to fit... (Sorry for continuing the hijack).

 

[gunmonkeyintl]

I had to modify the replacement vent in the same way described by others here. I hacksawed to a usable length and deburred the opening to avoid filings going into the reservoir. Otherwise, it fit fine.

 

[grm61]

Had to shorten my tube as well...Its just a vent. it does not have to be ball busting tight, if it is to loose where it fits correctly, you could wrap the fitting with teflon tape to "firm it up" where it needs to ride after tightening.

If you go this route, wrap the tape very tightly so pieces of it don't wind up in you Hydro system.

It is said with the return routed into the other remote port, there is internal backpressure which causes heat and reduced hydro performance.

Why would they go to the extra expense to supply the kit if there was no reason?

Having said that my point is if your hoe is on and the remote is turned on, you are circulating fluid through there.

If it is restricted, that would put more stress on the rest of the hyd system.

Your talking about making it "right" I would address this known issue.

 

[sdef]

Sorry for continuing the hijack).

No worries. I have my information. Continue