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1953ACWD 
Bronze Level
Joined: 01 Nov 2012
Location: Lancaster, PA
Points: 78
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 Topic: Getting It Up: 5050, w/ 400 loader
Posted: 05 Feb 2022 at 7:54pm |
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My AC 5050, with AC 400 loader with pallet forks struggled to lift my 950 lbs. cattle squeeze chute today. It lifted it, but would not lift it very high. The 400 loader is supposed to have a lift capacity of 2,000 lbs. I do have a quick-attach adapter plate on my loader, which extends the loader's arms by about 4" to 6" and changes the geometery some. However, I question if that amount of extension to the lift arms would reduce the lift capacity that much. Maybe it would? Any suggestions as to how I might increase the lifting capacity of my loader or why my loader couldn't lift the chute up high?
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1953 WD - Grandpop bought new, sold to neighbor in 1965, I bought back in 2001, restored 2021; 1974 175 Gas; 1980 5050 Diesel, w/400 Loader
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AC720Man
Orange Level
Joined: 10 Oct 2016
Location: Shenandoah, Va
Points: 5131
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Posted: 05 Feb 2022 at 8:27pm |
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It will reduce it some but not that much. I would suspect pump pressure. Get a AC service manual that will give instructions on how to test, the pressure you should be getting and where to test output. How is your loader configured? Is your loader plugged into the rear remotes?
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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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DiyDave
Orange Level Access
Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 53279
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Posted: 06 Feb 2022 at 4:52am |
Best way to check is with a flow meter. It connects to both lines and is capable of applying a load on the pump, and will show blth the pressure and the flow rate of the pump. The flow rate should be 6.47 GPM on a good pump, so you would need a flow meter that can measure in that range. Check with your local Hydraulic service , to see if they can come out and do the check. Even is it takes a service call, its worth it to know, versus a wild stab in the dark, replacing components that cost double or triple the cost of said check.
Another thing to check is leaky suction hoses/fittings, and intake filter. Cavitation (sucking air) ruins most pumps. Find the intake filter location in the shop manual, and replace it first, if you like, before calling a tech out...
Bieler Hydraulics, Leola, is near to you, I have dealt with them before, if they don't offer mobile service to check the pump, they might be able to turn you on to someone who can... 
Edited by DiyDave - 06 Feb 2022 at 4:57am
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DrAllis
Orange Level Access
Joined: 12 Sep 2009
Points: 21384
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Posted: 06 Feb 2022 at 6:12am |
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Lack of information. I assume the hydraulic pump that powers the loader is behind the seat just above the PTO shaft????? You need to connect a 3,000 psi gauge into a pressure line somewhere and verify that the pump (at full throttle) is capable of making 2,200 psi of pressure. If it does, your extension on the loader has moved things too far forward to keep the 2,000 lb lift rating. You could raise the pressure to 2,400 psi, but at your own risk of failing the pump.
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Joe(TX)
Orange Level
Joined: 11 Sep 2009
Location: Weatherford. TX
Points: 1682
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Posted: 07 Feb 2022 at 10:15am |
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The loader capacity is for lift at the ground. It is reduced as it lifts. Also the lift is reduced the further out from the pins it is. It's the same for every loader. Check the chart in the loader manual.
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1970 190XT, 1973 200, 1962 D-19 Diesel, 1979 7010, 1957 WD45, 1950 WD, 1961 D17, Speed Patrol, D14, All crop 66 big bin, 180 diesel, 1970 170 diesel, FP80 forklift. Gleaner A
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