BX24 blowing hydraulic filters

[JPGR]

Blew the seal or the filter off the canister. did not rupture the can. And I'm not trolling.

 

[JPGR]

A note of caution: Running hydrostatic trans without charge flow for any period of time will potentially damage the hydrostatic pump. It relies on the charge pressure for hydro-dynamic lubrication for rotating group when in neutral.

Tractor doesnt run longer than a minute before the filter leaking

 

[KWentling]

Anyone else think we may be getting trolled by AI or a person? Three people have claimed to have this filter blowing up issue. BUT, all three are new members that haven't posted anywhere but this topic, and none have answered my question on the specifics of what "blowing up" a filter means.

Doug in SW IA

The blowing up filters (at the sealing surface) is a real thing. I've read of this multiple times here and on OTT. If I recall correctly Kubota made some kind of change starting with the BX24 to try and alleviate the problem. Unfortunately I can't find the post about that to confirm it. Seems the cure for the problem is usually not reported. I believe one instance there was debris blocking a passage between the filter and the relief valve. I don't have much success searching these forums. Google does better.

 

[jonsstihl]

where are you sourcing your kubota filters? Amazon..... or a reputable dealer that would not keep old stock.

 

[dougtrr2]

Blew the seal or the filter off the canister. did not rupture the can. And I'm not trolling.

Can you clarify. Are you just blowing fluid out of the seal/block interface, or is the filter coming apart and launching parts of itself off the tractor? It isn't clear to me.

Doug in SW IA

 

[JPGR]

where are you sourcing your kubota filters? Amazon..... or a reputable dealer that would not keep old stock.

Dealer

 

[jyvas12]

Anyone else think we may be getting trolled by AI or a person? Three people have claimed to have this filter blowing up issue. BUT, all three are new members that haven't posted anywhere but this topic, and none have answered my question on the specifics of what "blowing up" a filter means.

Doug in SW IA

it literally bows out, and blows fluid out of the seal

 

[jyvas12]

If sudden then need to find what passage or flow path is plugged from the filter into the hydrostatic curcuit. I believe the filter flows from outside to inside so path in question would be through the filter mounting stud into the HST.

When you removed the charge relief did oil pour out of that opening? It should connect directly to the transaxle reservoir and I would think below oil level but not 100% certain of that.

Did you try turning the engine over with charge relief removed to verify flow to the charge relief?

Or with filter off and relief removed blow some air through from filter to see if air and oil come relief port. Don’t get crazy with air pressure since this circuit is only supposed to run 70 PSI max.

If air blows out relief possibly try putting relief in without spring and ball. Remove trans fill port cap and gently blow some air into the filter stud. Should just make bubbles in the trans reservoir if path is open with little to back pressure. Again low pressure since don’t want to damage anything further.

Keep everything as close to surgically clean as possibly.

If air seems to flow then try installing the charge relief assembly and see if any air flows past it if you can seal the connection to the filter stud. I have a rubber tipped air nozzle so it might work. Be extra nice if had some way of regulating air pressure into that filter - charge assembly.

I know easier for me type than doing the actual oil in your face testing..

I wil try some of these and let you know. thanks for the info

 

[jyvas12]

Anyone else think we may be getting trolled by AI or a person? Three people have claimed to have this filter blowing up issue. BUT, all three are new members that haven't posted anywhere but this topic, and none have answered my question on the specifics of what "blowing up" a filter means.

Doug in SW IA

I am a new member because I just had this problem happen last week. I have a bx1500 that I have owned since 2006. I was moving dirt and working it pretty hard and it happened. I thought it may have just gotten hot from a large dirtwork project. I put on a new filter and it happened again withing 5 seconds. I have taken out the pressure relief valve, charge valve and everything seems fine. I am still at a loss. Most people only post when they are new members because you can browse here for years and years without being a member like me, but when you want to ask a question you need to register.

 

[jyvas12]

If sudden then need to find what passage or flow path is plugged from the filter into the hydrostatic curcuit. I believe the filter flows from outside to inside so path in question would be through the filter mounting stud into the HST.

When you removed the charge relief did oil pour out of that opening? It should connect directly to the transaxle reservoir and I would think below oil level but not 100% certain of that.

Did you try turning the engine over with charge relief removed to verify flow to the charge relief?

Or with filter off and relief removed blow some air through from filter to see if air and oil come relief port. Don’t get crazy with air pressure since this circuit is only supposed to run 70 PSI max.

If air blows out relief possibly try putting relief in without spring and ball. Remove trans fill port cap and gently blow some air into the filter stud. Should just make bubbles in the trans reservoir if path is open with little to back pressure. Again low pressure since don’t want to damage anything further.

Keep everything as close to surgically clean as possibly.

If air seems to flow then try installing the charge relief assembly and see if any air flows past it if you can seal the connection to the filter stud. I have a rubber tipped air nozzle so it might work. Be extra nice if had some way of regulating air pressure into that filter - charge assembly.

I know easier for me type than doing the actual oil in your face testing..

I tried starting with the charge valve spring and ball out and same result. I blew air into the center of the filter port and no air goes in, so if it should go through, it isnt. so what might that be? thanks