Without a manual for my newly acquired Ford 3400, I don't know where to check the trans.,rear end, hydraulic, or the power steering. Nor do I know what weight oil to put in these areas. Can someone give me this info? Thank you, gregjo1948
 
There are only three drain plugs under that tractor, one for the engine located on the bottom of the oil pan, one for the transmission located under the middle of the transmission and one for the rear axle/hydraulics under the differential, as the rear axle center housing is also the sump for the 3 point hydraulics.

The transmission should have a level check plug on the right side near the brake pedals with a square headed pipe plug in it. It may or may not have a separate fill hole with a large hex head plug up on top by the shifter(s) depending on which transmission it has. If there is no separate fill hole then you use a flexible funnel to fill it through the level check hole. Fill it until oil just begins to drip out of the level check hole.

The rear axle/hydraulics has a level check hole on the right side back by your right heel as you sit on the tractor, also with a square headed pipe plug in it. Do not remove any hex head bolts in that area as most of them are connected to things that are internal to the rear axle center housing that will move out of place if you remove those bolts. The fill hole is on top of the rear axle center housing back under your right butt cheek as you're sitting on the tractor and it has a large hex head plug in it. As for the transmission, fill it until the fluid just begins to drip out of the level check hole.

The power steering on yours most likely has the separate reservoir up above the pump. I don't believe there is a drain plug on it, just remove on of the lines from the reservoir to drain it. It should have a cap that unscrews with a dipstick built into the cap with the typical low and high marks on it like an engine dipstick.

Fill all 3 (transmission, rear axle and power steering) with a UTF (Universal Tractor Fluid) that says on th elabel that it meets or exceeds the Ford/New Holland M2C134D specification (might just say 134D).
 
(quoted from post at 04:34:38 04/06/16)
Thanks Sean! Your info will save me buying a manual for now.

Used manuals can't be found for about $15 if you are patient . There are dozens of other little things that you will learn to make your life easier .
 

Do NOT remove the screw/bolt on the side of the trans or rearend... only the pipe plug... or you will have serious problems.
 
(quoted from post at 08:56:09 04/06/16)
Do NOT remove the screw/bolt on the side of the trans or rearend... only the pipe plug... or you will have serious problems.

The guy I got my 3000 from did not know about the check plugs so he would pour in oil until he could see the oil level in the rear fill cap . The 3000 has inadequate brakes to begin with but a few gallons of oil do not help .

As I serviced the tractor I replaced all of the oil level plugs with nice shinny brass plugs trans / rear / steering and even the hydro pump bleeder plug .

ILL post pics for reference this weekend .
 

I have always wondered how mechanics fill the transmission or rear sump from the 5 gallon bucket of 134 UTF bought at TSC. I have been using a very inefficient method of pouring the fluid back into a 1-2 gallon container that I can lift to the fill hole. I know there is a better way.
 
(quoted from post at 11:21:09 04/06/16)
The guy I got my 3000 from did not know about the check plugs so he would pour in oil until he could see the oil level in the rear fill cap . The 3000 has inadequate brakes to begin with but a few gallons of oil do not help .

The brakes on your 3000 are outboard dry drum brakes, so the oil level inside the rear axle shouldn't affect the braking power unless the axle seals are leaking fluid into the drums.
 

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