Allis chalmers B trans/diff/hydraulic???

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   Just got an allis chalmers b few weeks ago cranks and runs fine in all 3 gears. Came w woods belly mower seems all bearings and pully wheels good, with pto on tractor gets pretty weak.
Also it has a small hydraulic ram and a center link welded in but rest of 3pt is missing.
So last week I tested the hydraulics and they worked fine. I made a chain loop to the lift and it lifted me 175lbs and stayed up fine no bleed down until I push down. So all was good.

Today I started to fab lift arms. Really want to be able to at least use small scrape blade. But I tested the hydraulic today rigged it to lift the small blade I can barely lift it by hand so it can’t weigh more than me. 
NOTHING no lift it won’t even lift me now. Only goes up with no weight on it and I can push it back down with my hand.
Checked the fluid, Its full but it’s gear oil I can smell it. But not sure.
Y’all recon I should change the fluid first. Then go from there.
I don’t have a manual 
But I see 3 drain plugs and the large fill plug. What else should I know?
Thanks 

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Grantjp Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 28 Dec 2018 Location: Lancaster, SC Points: 23	Post Options Post Reply Quote Grantjp Report Post Thanks(0) Quote Reply Topic: Allis chalmers B trans/diff/hydraulic??? Posted: 28 Dec 2018 at 11:21am
	Just got an allis chalmers b few weeks ago cranks and runs fine in all 3 gears. Came w woods belly mower seems all bearings and pully wheels good, with pto on tractor gets pretty weak. Also it has a small hydraulic ram and a center link welded in but rest of 3pt is missing. So last week I tested the hydraulics and they worked fine. I made a chain loop to the lift and it lifted me 175lbs and stayed up fine no bleed down until I push down. So all was good. Today I started to fab lift arms. Really want to be able to at least use small scrape blade. But I tested the hydraulic today rigged it to lift the small blade I can barely lift it by hand so it can’t weigh more than me. NOTHING no lift it won’t even lift me now. Only goes up with no weight on it and I can push it back down with my hand. Checked the fluid, Its full but it’s gear oil I can smell it. But not sure. Y’all recon I should change the fluid first. Then go from there. I don’t have a manual But I see 3 drain plugs and the large fill plug. What else should I know? Thanks

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Steve in NJ Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Andover, NJ Points: 11917	Post Options Post Reply Quote Steve in NJ Report Post Thanks(0) Quote Reply Posted: 28 Dec 2018 at 11:59am
	You probably should've put your post in the Farm Equipment catagory. This is for Garden Tractors. You'll get a better response back over there. I can't help ya with an answer, but the other guys can. Steve@B&B
	39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife

Grantjp Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 28 Dec 2018 Location: Lancaster, SC Points: 23	Post Options Post Reply Quote Grantjp Report Post Thanks(0) Quote Reply Posted: 28 Dec 2018 at 12:11pm
	Dang ok