B4200d w 1620 loader. Bought this 4200 a couple of months ago. Loader operated good without any load. With even a couple of pounds it won't lift or curl. I change the hydraulic oil and replaced the screen (it doesn't have a filter) but same issue. Any ideas what to try next? Also, it only raises (empty) with the hydraulic lever pulled back.
loader lift
- Thread starter garco53
- Start date
Russell King
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Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
The place to start is to get the pressure tested out of the pump. Getting a Work Shop Manual (WSM) would probably be a good starting point to identify hydraulic test points on the tractor. That manual may be available here
See post #14 in this thread for a video on a test showing the gauge type required.
www.orangetractortalks.com
The easiest way to test it is to remove an output hose to the loader cylinder, connect the gauge to that hose and actuate the FEL valve in the correct way. The tractor needs to be operating and running around 2000 RPM (not at an idle). The reading is probably around 2000 to 2500 PSI but the WSM should have the exact value and RPM required.
The gauge can just be the terminal object in that test for simplicity.
You can use a mating disconnect half to attach the gauge if your loader has disconnection couplers.
You can also use the power beyond port (T port with a PB sleeve) on the FEL valve.
But you should FIRST disconnect any of the hydraulic couplers (one at a time) to clean them and make sure they are connected together well. A badly connected coupler will limit flow and cause problems.
If you understand the hydraulic flow path well enough you can verify that the FEL valve is connected correctly to the tractor.
Post pictures of the valve and connections to the tractor. Best color code the hoses since they will all look the same probably.
See post #14 in this thread for a video on a test showing the gauge type required.
L3902 hydraulic pressure test?
Am I doing this right? Reading is very low!
www.orangetractortalks.com
The easiest way to test it is to remove an output hose to the loader cylinder, connect the gauge to that hose and actuate the FEL valve in the correct way. The tractor needs to be operating and running around 2000 RPM (not at an idle). The reading is probably around 2000 to 2500 PSI but the WSM should have the exact value and RPM required.
The gauge can just be the terminal object in that test for simplicity.
You can use a mating disconnect half to attach the gauge if your loader has disconnection couplers.
You can also use the power beyond port (T port with a PB sleeve) on the FEL valve.
But you should FIRST disconnect any of the hydraulic couplers (one at a time) to clean them and make sure they are connected together well. A badly connected coupler will limit flow and cause problems.
If you understand the hydraulic flow path well enough you can verify that the FEL valve is connected correctly to the tractor.
Post pictures of the valve and connections to the tractor. Best color code the hoses since they will all look the same probably.
Sounds like you may have the directional valve on the hydraulic outlet block in the wrong position. Quick and easy fix if thats the case.
Dan
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