John Deere 375 Backhoe

[Cocre]

Are you saying that your 447 does not have its own relief valve?! All the hoe
attachments I have owned or operated had their own RV.

I apologize for any confusion. The 375 and 447 hoes also have main system relief valves and several circuit relief valves. The main circuit is set 2250 psi. It too is adjusted via an adjustment screw.

I probably should get paid by Deere for promoting their technical manuals, but I do it for free. The manual on the tractor series is nothing less than phenominal. The one on the hoe covers a lot of models all jammed together, but is still a worthy product. I advise all JD owners to buy them for their specific models.

 

[abundyg]

I have tried at all different rpms and i am still waiting to hear back from the dealer i purchased from. I appreciate all the advice and i will have to check the pressures to make sure they are where they should be.

 

[abundyg]

Yes this is hooked up to the power and beyond on the tractor.

 

[mguitas]

I have tried at all different rpms and i am still waiting to hear back from the dealer i purchased from. I appreciate all the advice and i will have to check the pressures to make sure they are where they should be.

Let us know what you find, an just remember alot of backhoe operators depend on moving around to reposition theirself on the hoe. Just one reason to be able to lift your tractors rear with the hoe.

 

[cjdavis618]

Here is that video and this was actually a 3520 and not a 3720, but the same setup otherwise. The hoe seems to have plenty of power and didn't seem to stress raising the rear at all there.

John Deere 3520 - YouTube