4240 lift

[Jthag]

Have a 4240 JD new hydraulic pump and all filters and screen cleaned when I raise lift it’s slow when I activate my remote lever to let out boom 3 point drops

 

[Tx Jim]

Welcome to this forum
With 3 pt raise then engine is stopped does 3pt hitch lower or stay up? My guess is 3pt lowers quickly. 3pt lowering quickly indicates leaking 3pt control valves or leaking 3pt rockshaft piston seals

 

[Jthag]

It will settle but will take a couple hours heavily loaded

 

[Jthag]

What’s strange is only when I move remote lever does it drop as soon as release remote it raises right back up and I did find a lot of brass shavings big shavings in screen but they were like paper thin

 

[used red MN]

Hello Jthag, welcome to YT. So that sounds like the items Jim was going for isn’t your problem. Essentially, excess flow to 3 point starving the SCVs. My question is what type of a machine are you using, “let out the boom”? When you say remote does this mean a stock lever in the side console? What happened that required the new pump? Did you use this tractor before to do this work and it worked fine? Should your last sentence say I found a lot of big brass shavings in the screen that were paper thin? Try to make a sentence with a period at the end to answer each question.

 

[Tx Jim]

Hello Jthag, welcome to YT. So that sounds like the items Jim was going for isn’t your problem. Essentially, excess flow to 3 point starving the SCVs.

May I ask what you think would be causing excess flow to 3pt hitch other than an internal hyd leak in 3pt hyd circuit??

 

[used red MN]

Jim, I was just clarifying your last sentence to the OP and how the problem you were looking for him to find would cause his issue. Sorry, if that was not clear.

 

[Tx Jim]

No problem I just didn't understand what you stated. Diagnosing tractor/equipment problems can be challenging sometimes.

 

[Jthag]

Hello Jthag, welcome to YT. So that sounds like the items Jim was going for isn’t your problem. Essentially, excess flow to 3 point starving the SCVs. My question is what type of a machine are you using, “let out the boom”? When you say remote does this mean a stock lever in the side console? What happened that required the new pump? Did you use this tractor before to do this work and it worked fine? Should your last sentence say I found a lot of big brass shavings in the screen that were paper thin? Try to make a sentence with a period at the end to answer each question.

Yessir I’m sorry for my vocabulary. That’s exactly what I was trying to say big shavings paper thin brass. Using a sprayer 500 gallon it has 30 ft booms hydraulic cylinders control them . Yes it had been working fine for over a year this way all of a sudden this started .