HST issue

[Mculby]

I think something is going on with my HST. I have an L4400 with just 20 hrs on it and after mowing about 5 ac this weekend with a 72" bushog the hst makes a rattling noise when it is not moving and the HST pedal is in the neutral position. The rattling sounds like it is coming from a small hydraulic line under the left area where your foot sits. Once I put any pressure in forward or reverse on the pedal then the noise stops. Is there a check valve or something under the left foot area that could be rattling?

 

[Egon]

Did you check for any loose lines, control arms etc?

 

[Mculby]

Yep checked for loose lines and bolts all the fluid is full as well. When I was checking for loose items is when I discovered the small metal hydraulic line under the left foot area that seemed to be rattling when I was touching it but nothing was loose.

 

[radman1]

Is there a loose bracket holding the line? Is the line vibrating and touching something? Grab the line and hold it when in neutral to see if it stops.

 

[Mculby]

Yep I checked all the brackets and held the lines. There are no lines that are loose. It looks like a T with a small 1/8" or so hydraulic line coming from right under the left foot well that was rattling. If I can take a picture and post it I will. But it seems to have stopped now, but it only did it after I had ran the tractor with the mower for a few hours.

 

[Egon]

quick ties and duct tape!

 

[Redneck in training]

Would it be dead ended pump someway and the noise coming from the relive valve?

 

[texbaylea]

Redneck....
re: your signature.

I guess that I live in the country. Been there, done that!

Vernon

Oops OT, sorry

 

[Redneck in training]

Redneck....
re: your signature.

I guess that I live in the country. Been there, done that!

Vernon

Oops OT, sorry

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