Loss of hydraulic

[roadrunner_]

So I have a bx 2200 and when it gets warm it losses all hydraulic, won't lift, or drive. I am using tractor supply hyd fluid. Is it the fluid or do you think I have a hyd pump issue. I had some debris in the previous oil so I changed it and the filter, just replaced it with the tractor supply oil.

 

[JeepHead]

Does the fluid you're using meet the specifications of the tractor?

 

[JeepHead]

Quick run through of AI results.

Nice — I checked forum threads, Q&A pages and a BX-2200 service manual to see whether other owners see the same symptom. Short answer: yes — multiple BX-2200 owners report loader / lift or HST functions getting very slow or stopping once the machine warms up. Commonly-suggested causes across the threads and service advice are: low or contaminated fluid, air ingestion, clogged suction/filter or cooler, priority/relief or control-valve internal leakage, and (when pressure/flow collapse only when hot) pump internal leakage. Humber Polytechnic+4OrangeTractorTalks+4TractorByNet+4


Below I’ve put a short prioritized troubleshooting checklist you can run now (fast → deeper), plus a safe general bleeding and pressure-test outline.

Quick findings from other owners (high level)​

• Several BX-2200 threads describe the lift/loader being fine cold but slow or nonfunctional after 15–30+ minutes of use (or after heavy work/heat build-up).
• Typical community fixes / diagnostics people mention: check/replace hydraulic fluid & filter, inspect suction strainer, check cooler/airflow, look for air leaks, test hydraulic pressure/flow, and suspect priority valve or pump if flow falls only when hot. JustAnswer+2TractorByNet+2

Prioritized checks & tests (do these in order)​

Safety first: park on level ground, engine off for visual checks, relieve pressure before disconnecting lines, wear gloves/eye protection. Humber Polytechnic

1. Fluid level & condition — 5 min (cold engine)
   • Check reservoir level and dipstick. Top to spec if low. Low level commonly causes starvation as oil heats/expands.
   • Inspect fluid color and smell: milky = water contamination; very dark/burnt = replace fluid + filter. My Tractor Forum+1
2. Suction strainer / filter — 10–30 min
   • Replace hydraulic filter (cheap & often fixes intermittent/heat-related issues). Inspect suction strainer (in pan/reservoir) for debris. A clogged suction will starve pump when hot. JustAnswer+1
3. Check for external leaks / hose seating — 5–15 min (warm run)
   • Run hydraulic work until symptom appears, then carefully check hoses, quick connects and fittings for leaks or weeping. Warm hoses can leak or allow air in. TractorByNet
4. Cooling / heat build-up inspection — 5–15 min
   • Feel (carefully) the oil cooler, reservoir and hoses after running: excessive heat suggests cooling/flow restriction. Check radiator/cooler fins for debris blocking airflow. OrangeTractorTalks+1
5. Bleed system / remove air — 10–20 min
   • If air was suspected or filter changed, bleed per procedure (general outline below). Air compresses and causes loss of lift under load, and symptoms often show after warming. JustAnswer
6. Pressure & flow test — requires gauge / 15–60+ min
   • Attach gauge at hydraulic test port (or quick coupler test point). Measure pressure at idle and under load, and measure flow if possible. Patterns: pressure falls when hot → relief/priority valve or pump drive issue; normal pressure but low flow when hot → internal pump leakage. If you’re not comfortable, have a shop do this. JustAnswer+1
7. Priority / relief / control valve inspection (advanced)
   • If filters/strainer/cooling are OK but the problem persists, the priority valve or control valve spools can have internal wear or stick when hot. These commonly show up in BX threads as root causes. Service or replacement may be needed. JustAnswer+1
8. Pump internal leakage (dealer/bench repair likely)
   • If flow collapses only when oil and pump are hot, pump internal leakage or shaft wear is likely; this typically requires removal and bench testing or replacement. Humber Polytechnic

General bleeding procedure (common BX / small-tractor approach)​

Use this only as a general guide — follow your service manual for exact steps for the BX-2200. Keep engine RPM moderate and take all safety precautions.

1. With engine off, top reservoir to correct level.
2. Start engine, idle, with parking brake on. Cycle the loader arms and bucket slowly through full travel several times (operate each function for 10–15 seconds). This helps move trapped air to the reservoir.
3. Operate auxiliary/implement valves while watching fluid level; top as needed.
4. If there are bleed screws on cylinders or remote valves, open them slightly while operating the circuit until steady oil (no bubbles) comes out, then close. (Not every model has external bleed screws.)
5. Repeat cycles, then recheck level and test under light load. If you still have sponginess/slow response, a more thorough shop bleed or pressure test is recommended.

Pressure & flow checks — what to look for​

• Good pressure & good flow (hot) → problem likely valve linkage/adjustment or restrictions.
• Low pressure (hot) → relief/priority valve or pump drive problem.
• Normal pressure but low flow (hot) → internal pump leakage (pump worn).
  If you want the exact test ports and factory pressure specs I can pull the BX-2200 service manual pages with the test points and expected pressures. Humber Polytechnic

 

[Harry in Ky]

So I have a bx 2200 and when it gets warm it losses all hydraulic, won't lift, or drive. I am using tractor supply hyd fluid. Is it the fluid or do you think I have a hyd pump issue. I had some debris in the previous oil so I changed it and the filter, just replaced it with the tractor supply oil.

First question. Does the steering quit when this happens? Was this issue present BEFORE the fluid and filter change? I'm no authority on BX tractors but somehow I doubt the TSC fluid is the problem.

 

[GrandpaSmurf825]

I agree with Harry in Ky. Highly unlikely the TSC fluid is the issue. If it was doing this before you changed it then you didn't correct the problem. When you changed the fluid, filter, and had debris what do you mean by debris? Metal particles? If you had metal as in more than a few little flecks then you may have serious issues. Did you happen to take photos of the debris? If you have the filter still you might cut it open so we can see what sort of contamination it has in it. I don't know the system so I won't try to troubleshoot further than that. When fluid is cold things will always function better than when warm and when it warms up it bypasses much easier. If you have internal bypassing going on the fluid will get hot quickly. Have you noticed that?

 

[JeepHead]

If this same issue was there before you replaced the fluid, then I would agree that it's not a fluid issue. If this issue wasn't there prior to changing the fluid, and you only changed the fluid because it had debris in it, but then this issue started after the fluid change, then I think it's absolutely possible the incorrect fluid COULD cause this issue.
But I would be curious as to what caused the debris to begin with.

 

[oldnslo]

The BX models use a single pump with priority flow control to provide flow for steering which then is also charge flow for the HST. Excess flow goes to implement. If losing ability to drive it certainly points towards a pump flow concern. First thing I would suggest is checking system pressure on steering and or implement circuit. Check with both cold oil and when warmed up. If memory is correct the main system relief is also located before the priority valve.

 

[roadrunner_]

First question. Does the steering quit when this happens? Was this issue present BEFORE the fluid and filter change? I'm no authority on BX tractors but somehow I doubt the TSC fluid is the problem.

I blew a hyd hose and replaced it, then my father in law said he had some hyd fluid in a 5 gal bucket that I could put in there, well it was used which I didn't know it was, had all sorts of stuff in it. I ran it for about 20 minutes and that's when all this happened. So I changed the hyd fluid and filter with the tsc fluid and still having the issue after 15 minutes of running, it will not steer barely drives and won't pick up the loader at all

 

[ptsg]

Have you ever cleaned the hydraulic screen/strainer on that tractor? There is a filter yes, but that's most likely for the HST. On the suction side of the hydraulic pump there is a screen/strainer that needs to be pulled out and cleaned.

Part #030 in this diagram: