484 international tractor help

[Rob VA]

Needing some help with the rear hydraulics. Tractor has set for about 4 months in temp control shop the 3 point hydraulic leaked all the way down over that time .when I cranked the tractor up they raised all the way up and won’t move from that position. So next I changed the filter and fluid ….it was dirty Same problem. Any help would be greatly appreciated appreciated

 

[Farmall m farmer]

Sounds dump but did you try standing on it to put weight on it from my limited knowledge of three points they don’t push down just go up and the weight of the implement pulls it down

 

[Rob VA]

Yea already tried that but thanks

 

[Farmall m farmer]

Is the draft lever linkage broken or anything out of the usual?

 

[Rob VA]

no levers are broken

 

[Rob VA]

recently i just took the unload valve under the seat inspected and cleaned . no differents.

 

[Mike(NEOhio)]

Not from a 484 but may help.

 

[soupkid]

I have the service and parts manuals.
I'll try to post them when I get home.

 

[JimB2]

Hi Rob, do you have an IH Service Manual? The UK IH 74 Series Manuals free download at:

D239 / 674 Engine Manual pdf

------------------------------------ Post updated with links to the engine manuals, thanks Oleman! I've run these through text recognition; can be searched in PDF now. ------------------------------------ Hi Folks, Trying to find a PDF copy of the D239 engine manual for my 674, need to replace th...

www.redpowermagazine.com

The IH 84 Series is the same except for some changes, the hydraulic section is in Group 10 of IH Service Manual for 454 etc
Photo below is left side is Position Control UP/DOWN and right side is Draft Control.
I believe the problem with your 484 is the Spool Valve by Blue arrow is stuck. It can be accessed by removing the inspection cover under the seat, use a screwdriver to work the spool in and out and maybe some penetrating oil on the spool.

There are a couple IH 74/84/85/95 Series experts over on the https://www.redpowermagazine.com/forums/forum/4-technical-ih-talk/
Forum and membership is free.

 

[Rob VA]

ok thanks guys hey JimB2 ... is the inspection cover the round plate on the right side of tractor under the seat facing the right rear tire?? look to be about 10 inches or so in diameter. also would i need to drain fluid again to take this cover off?

 

[JimB2]

Item #25 from photo below

 

[Rob VA]

ok gotcha ill take that off when i get home and look for that valve. thank you again for your time . we about to get a big snow here in VA and i want to be prepared as much as i can. lol . ill let you know how it goes.

 

[JimB2]

When you work the 3PT UP/DOWN lever you can see the head of the spool that the mechanism touches.
IIRC pushing the spool in Raises the 3PT and when you lower the 3 PT Lever the spring in the spool valve should push the spool out lowering the 3 PT, until the cam follower on the 3PT rockshaft adjusts the mechanism that will push the spool into the Neutral position. If the spool is stuck you may have to grab it with needle nose pliers to free it up.

 

[Rob VA]

it was two lines right on top of the cover

 

[Rob VA]

This is far as I got tonight had to take the pto lever all the way off ..it came all the way across and was working the valve close the the hydraulic filter ..right in the way

 

[Rob VA]

I will take the cover off tomorrow ..now that I have access.

 

[Rob VA]

Got it JimB2. !!!!!!!! The arms came down. You hit the nail on the head .. that valve was stuck… now going to put it back together some and crank it up ..cycle it a few times to work that clean fluid in there

 

[JimB2]

You are welcome, hope you don't get a bad snow storm. We have had a few up here in Canada this winter.

 

[Rob VA]

Talking about ice now either way the 484 aka Old Rosie is ready. Just worked the position lever up and down about 8 times works like a charm