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Allis Eli 
Bronze Level
Joined: 17 Apr 2024
Location: MN
Points: 27
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 Posted: 18 Apr 2024 at 8:19pm |
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hey everyone here is a quick update on the 190. I took out both relief valves and opened them to inspect the orings. on both of them they were completely worn out and cracked. where would you recommend getting new ones. I did find part number (70276323) are these the right seals? also 100 bucks seems like a awful lot for some orings and other parts anyone have any good sources to get these cheaper? thanks for everything
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DrAllis
Orange Level Access
Joined: 12 Sep 2009
Points: 19596
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Posted: 18 Apr 2024 at 6:41am |
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Get yourself a 3,000 psi gauge and attach a hydraulic tip onto it. Plug it in a remote outlet and activate that remote lever with engine throttled up to 2,000 RPM or more. Traction Booster relief valve is 2100 psi and main relief is 22-2300 psi max.
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AC720Man
Orange Level
Joined: 10 Oct 2016
Location: Shenandoah, Va
Points: 4669
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Posted: 17 Apr 2024 at 10:23pm |
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Don't forget to check the sump screen under the tractor. When I bought mine is was really dirty and obviously had not been cleaned for a long time. After cleaning it and swapping valves, although it helped, the pump was in dire need of a rebuild. Sent it to SLI for a rebuild and luckily they was able to rebuild it. Now it works great. My good friend just had to purchase a new pump for his series 1 as his could not be rebuilt. $2,800, I hope a valve swap fixes your issue. Rebuilt his valve since it kept sticking but unfortunately the pump was the issue.
Edited by AC720Man - 17 Apr 2024 at 10:24pm
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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Allis Eli
Bronze Level
Joined: 17 Apr 2024
Location: MN
Points: 27
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Posted: 17 Apr 2024 at 8:44pm |
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okay thanks for the reply's. I will switch the relief valves I don't have a hydraulic gauge where would you recommend for getting one.
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Lynn Marshall
Orange Level Access
Joined: 13 Sep 2009
Location: Dana, Iowa
Points: 2156
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Posted: 17 Apr 2024 at 7:14pm |
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The relief valves are adjustable. A quality gauge plugged into one of the remote outlets will tell you what you have now and later, after you have adjusted it. 2300 psi is approximately what you want. Half a turn at a time with the screw. You don't want to overdo it.
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DrAllis
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Joined: 12 Sep 2009
Points: 19596
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Posted: 17 Apr 2024 at 3:40pm |
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Swap the two relief valve positions and try it. If you now have hydraulics, the one in the Traction Booster location needs a seal kit or replace with new.
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Allis Eli
Bronze Level
Joined: 17 Apr 2024
Location: MN
Points: 27
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Posted: 17 Apr 2024 at 12:34pm |
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Hi everyone just joined the forum. Looking for some advice on my Allis Chalmers 190 with low hydraulic pressure
when bought the tractor it had been sitting for 5 years. It has 3900 hours gas engine. I just got it running and
now it runs and drives good.
however the hydraulic linkage was stuck so I freed that up. I tried to lift a 5x6 round bale on the three point and it
would not lift. it did not even pull the engine down so I changed the hydraulic filter and filled oil. power steering works and so does the power director. I already pulled both the relief valves on the valve stack they were clean so I reinstalled both of them. still won't lift bale. if I understand correctly the front relief valve is for the traction boost and the back one is three point? so does the relief vale need new seals or swap or something. or is the pump possibly going out.
thanks
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