Loader Bucket curl

[mjgood]

New owner of a 4720ch...

I have a question about the bucket operation..

When I have the bucket level and on the ground, going forwards or reverse, an object that is above grade will cause the bucket to raise (curl) when it goes under the bucket, the loader arms stay put... also I'm not in float position.. Is this by design or should it be locked in place by the hydraulics...
I know the FEL manual says to use the heel of the bucket for backgrading, but that's not what I'm doing, I'm trying to clear some rocky soil and it get frustrating when the bucket keeps lifting. I'd like to get a skeleton rock bucket for clearing (Texas Hill Country) but if the bucket keeps lifting up I'm not sure it will be very effective.

I've also tested by pointing the bucket straight down and the bucket will curl up on it's own as I drag it in reverse.

all other FEL functions work as expected.

Dealer wasn't much help and they're a long drive for service if this is actually by design...


I appreciate any help on this...

 

[George2615]

Welcome to TBN...........
It is possible your curl function could have air in the system since it is still new. Try cycling the curl and dump functions of the loader holding the joystick for a few seconds when the bucket stops moving to bleed the air.

If that doesn't cure the problem you probably have bucket flop syndrome as do many other brands including mine. See the attached links for how I and others cured the problem. I posted a video in one link where in dump position I can manually lift the bucket from the bottom edge showing the hydraulics didn't hold.

On the top right of the page you can do a Google search for bucket flop. There are many pages with similar posts.


http://www.tractorbynet.com/forums/hydraulics/352989-ls-tractor-bucket-flop-problem.html

http://www.tractorbynet.com/forums/...uestion-regarding-loader-control-valve-3.html

 

[sikmusicfreak8]

Havent had any issues like this with mine... I will say that when I am putting down pressure on the arms or the curl, it takes a few seconds before it will start to move. So I have basically the reverse of your problem. I see videos of other tractors that have zero delay, almost like my tractor has to fill the cylinders before it actually starts working...

 

[mjgood]

Thanks for the info... Bucket flop describes what is going on exactly... I ordered the flow restrictor (from Amazon) and will have it tomorrow also got a 3/8 male-male connector, will be going to the property this weekend and will install restrictor and see how things work out... Thanks again..