Ken S.in Ky.
New member
I have the Kama 554 that does it as well.Just never give any thought to it being any big problem.
3ph won't lower without weight
- Thread starter RobT
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bluechip
Veteran Member
I think this lifting of the unburdended 3 point lift arms comes from the oversupply of oil to the lift valve. I suspect some restriction in the valve keepis it from flowing all the oil through and some may "back up" into the lift cylinder. It cant build any real pressure because the valve is open. We noticed this on some TS series KAMA tractors after we had increased from 306 pumps to 314 pumps to facilitate faster loader operation. If my guess is correct, thicker oils may tent to increase thie phenomenon and lighter oil may help. Most users just work with/around it.
Soundguy
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- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
Reminds me of what happens when you put a 4gpm ford 'hundred series pump, on a 2.9 gpm Ford NAA...( they are bolt up compatible..) the draft control becomes eratic and overcorrects like all get out... ( valve wasn't made to flow all that oil.. etc.. )
Soundguy
Soundguy
BTDT
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Soundguy said:
Someone must have told you that, because I can't imagine you making a mistake.
Soundguy
Old Timer
- Joined
- Mar 11, 2002
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- 52,424
- Location
- Central florida
- Tractor
- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
I havn't actually done plummed it, though a while back had looked into putting a later hundred series pump on my NAA in order to run a set of rear remotes. that's when i found out about the issue. The shop manual makes a brief reference to it as well... The 'fix' is to not use draft control.. in other words.. if you are just using position control it's no big deal. I imagine the same thing could happen on a ford N using an aftermarket live hyds setup that is plumbed in parallel with the ford pump, pretty much doubling it's capacity...
I abandoned the idea of putting a remote on the NAA.. it's hyd top cover was a step inthe right direction ( from the 8n ) but ford finally got it right in 55 with the hundred (and thousand series top covers) with a standardized mating flange making it easy to add remote hyds.. etc. I believe the valve for the NAA is still available.. though it is quite spendy.. and I've only seen a Single spool.. not a double.. etc..
Since then i now have 2 hundred series and a thousand series with either loader hyds or remotes plumbed off of those valves..e tc.
Soundguy
I abandoned the idea of putting a remote on the NAA.. it's hyd top cover was a step inthe right direction ( from the 8n ) but ford finally got it right in 55 with the hundred (and thousand series top covers) with a standardized mating flange making it easy to add remote hyds.. etc. I believe the valve for the NAA is still available.. though it is quite spendy.. and I've only seen a Single spool.. not a double.. etc..
Since then i now have 2 hundred series and a thousand series with either loader hyds or remotes plumbed off of those valves..e tc.
Soundguy
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