1947 ford 8n tractor

bought 47 8n ford tractor, know little, it has dip stick under seat on rt. side,says level here when cylinders extended??, where do i put hydraulic oil?? in, what kind of ydraulic oil?.cand find opening to pour in fluid. has lever under seat on left side whate is it for?
havent got owners manual yet. any help appreciated.

where do i put hydraulic oil?? in, what kind of ydraulic oil?. has lever under seat on left side whate is it for?

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Welcome to the fascinating world of old Ford tractors!!!

Transmission, lift and rear end have a common sump. You add oil by removing the cap just left of the gear shift.

Original spec was 90wt that is yellow metal safe. You can find it at Tractor Supply or NAPA. Problem is you don't know what's in it now - Might be a good idea to change it if it's low. Takes a little under 5 gallons.

Lever on the left side engages your PTO - Which also drives the hydraulic pump for your lift. If your lift is working, your PTO is engaged - If not, try moving the PTO shift lever in the opposite direction.

I think you should leave it alone till your book comes in.
Too many bad things could happen if over filled.
This is one tine that I will say - A little low would be better then overfull.

The plug for the trans.and 3 Point are the same,on top of the trans. by the gearshift.

90wt? I"ve got regular hydraulic fluid in mine...
should I change it out with gear lube?

bob.......you ask......."it has dip stick under seat on rt. side,says level here when cylinders extended??"........"thatza 1-size fittz-all hydro-tranny dipstick".......the cylinders are built into BIG HEAVY WIDE disc cultivators for hydraulic operate rubber tired roadwheels. The state gitts kinda upset when your disc leaves scratches on their nice asphalt. There is some additional plumbing that hazzta be made on yer tractor hydraulics for them hydraulic road wheels to operate. Same with BIG plows. Not all discs are 3-point liftable.

Tip: while the 8N's originally used 5-gals of 90wt hydro-tranny oil, Ford/New-Holland now recommends specs: M2C-134D hydro-tranny oil (abt 60wt) Drain yer square diffy plug first 'cuz it peeeees with some degree of accuracy. Then drain the 3" tranny plug, and finally drain the 3" hydro-plate plug. The corner test port is NOT a drain.

Ittza good thing to keep yer hydro-tranny oil under-filled 'cuz overfilled hydro-tranny oil will splash out yer rear axle bearing seals and grease yer brakes. Not Good, eh? The tranny front seal will also leak and grease yer clutch. Not Good, either?

To eazily set yer 5-gals of hydro-tranny oil, remove the bottom 6-o'clock bolt from yer six-inch roundy dipstick plate behind yer right heel and letter drain down the outside of the tranny. Simple, eh? ........the greasy Dell

Brett, you say you are running your hydraulics on regular hyd oil not 90wt as the book calls for . Then you ask if you should change yours to 90wt . You have to realize that those oil recommendations were made when your tractors were brand new & pumps were new/strong . As they"ve aged , some of us find the newer hydraulic oil helps the pump work better .If your system is working fine with no leaks showing ; leave it alone . Why stir up a problem by switching lubes ? That"s my thoughts for today , so I HTH . God bless, Ken

Your tractor may have been made in 1947 but it is still called a 1948 8N sort of like right now you can buy a 2012 car today but it is was made in 2011 but still a 2012 car worked the same way on the 8N