Does anybody know of a manufacturer providing a kit for the new Kubota FEL Model LA1353. My concern is if a hose fails catastrophically, the bucket is going to slam to the ground. I see nothing hydraulically in series with the return line to prevent this from happening. My concern is safety for others who my be working in the same area or near the operation that may hurt themselves trying to get away seconds after a ruptured hydraulic hose fails. I realize the probability of both return hoses failing simultaneously is remote.
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Counterbalance Valve or block holding valve kit
- Thread starter Ob1kubota
- Start date
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Does anybody know of a manufacturer providing a kit for the new Kubota FEL Model LA1353. My concern is if a hose fails catastrophically, the bucket is going to slam to the ground. I see nothing hydraulically in series with the return line to prevent this from happening. My concern is safety for others who my be working in the same area or near the operation that may hurt themselves trying to get away seconds after a ruptured hydraulic hose fails. I realize the probability of both return hoses failing simultaneously is remote.
KennyV
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OB1…
The only injury I can place within seconds after a hydraulic failure would be slipping on a floor made slick by hydraulic oil…In this case common sense should tell you not to run on oil slick floors.
If a person is in or under the bucket, they shouldn’t be there to begin with. I have seen lines and hoses break and things do come down, but not really slam down, there is always an impressive spray of oil.
BTW if ONE line breaks, things come down as both cylinders are tied together, you don’t need two failures to make a mess. A line restrictor or another valve is unlikely going to make a difference. After all you already have a control valve in the circuit with a closed supply to the cylinders.
If you could make the hydraulic system fail proof, you still have other things mechanical, like pins, arms, welds and bushings that will break. That is when you will see things fall fast and hard.
Remember the FORCE of gravity is with you… KennyV.
The only injury I can place within seconds after a hydraulic failure would be slipping on a floor made slick by hydraulic oil…In this case common sense should tell you not to run on oil slick floors.
If a person is in or under the bucket, they shouldn’t be there to begin with. I have seen lines and hoses break and things do come down, but not really slam down, there is always an impressive spray of oil.
BTW if ONE line breaks, things come down as both cylinders are tied together, you don’t need two failures to make a mess. A line restrictor or another valve is unlikely going to make a difference. After all you already have a control valve in the circuit with a closed supply to the cylinders.
If you could make the hydraulic system fail proof, you still have other things mechanical, like pins, arms, welds and bushings that will break. That is when you will see things fall fast and hard.
Remember the FORCE of gravity is with you… KennyV.
KennyV
Elite Member
- Joined
- Sep 1, 2004
- Messages
- 2,601
- Tractor
- Kubota L4200 GSTCA
OB1…
The only injury I can place within seconds after a hydraulic failure would be slipping on a floor made slick by hydraulic oil…In this case common sense should tell you not to run on oil slick floors.
If a person is in or under the bucket, they shouldn’t be there to begin with. I have seen lines and hoses break and things do come down, but not really slam down, there is always an impressive spray of oil.
BTW if ONE line breaks, things come down as both cylinders are tied together, you don’t need two failures to make a mess. A line restrictor or another valve is unlikely going to make a difference. After all you already have a control valve in the circuit with a closed supply to the cylinders.
If you could make the hydraulic system fail proof, you still have other things mechanical, like pins, arms, welds and bushings that will break. That is when you will see things fall fast and hard.
Remember the FORCE of gravity is with you… KennyV.
The only injury I can place within seconds after a hydraulic failure would be slipping on a floor made slick by hydraulic oil…In this case common sense should tell you not to run on oil slick floors.
If a person is in or under the bucket, they shouldn’t be there to begin with. I have seen lines and hoses break and things do come down, but not really slam down, there is always an impressive spray of oil.
BTW if ONE line breaks, things come down as both cylinders are tied together, you don’t need two failures to make a mess. A line restrictor or another valve is unlikely going to make a difference. After all you already have a control valve in the circuit with a closed supply to the cylinders.
If you could make the hydraulic system fail proof, you still have other things mechanical, like pins, arms, welds and bushings that will break. That is when you will see things fall fast and hard.
Remember the FORCE of gravity is with you… KennyV.
MadReferee
Elite Member, Rest in Peace
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- New Hampshire
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- Kubota B2710, IH TD6-62 dozer with Drott 4n1 bucket loader
In order to prevent this you would have to put a double pilot operated check valve on the cylinders. That way if a hose fails the cylinder will still stay locked. There are several aftermarket check valves that will do the job. You just have to figure out how to mount and install them. However, I just don't believe it is necassary.
Hose failure is a somewhat rare occurrance. Hoses usually fail at the end fitting where it was crimped, mostly due to over flexing at the crimp or a poor crimp to start with. Hoses also fail due to constant rubbing against a hard surface which wears thru the outer layer and wire wrapping. Kubota uses 2-wire hoses on all their loaders. If you want a stronger hose then move up to 4-wire hose. Proper inspection and maintenance should prevent just about all failures.
Hose failure is a somewhat rare occurrance. Hoses usually fail at the end fitting where it was crimped, mostly due to over flexing at the crimp or a poor crimp to start with. Hoses also fail due to constant rubbing against a hard surface which wears thru the outer layer and wire wrapping. Kubota uses 2-wire hoses on all their loaders. If you want a stronger hose then move up to 4-wire hose. Proper inspection and maintenance should prevent just about all failures.
MadReferee
Elite Member, Rest in Peace
- Joined
- Apr 28, 2003
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- 3,862
- Location
- New Hampshire
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- Kubota B2710, IH TD6-62 dozer with Drott 4n1 bucket loader
In order to prevent this you would have to put a double pilot operated check valve on the cylinders. That way if a hose fails the cylinder will still stay locked. There are several aftermarket check valves that will do the job. You just have to figure out how to mount and install them. However, I just don't believe it is necassary.
Hose failure is a somewhat rare occurrance. Hoses usually fail at the end fitting where it was crimped, mostly due to over flexing at the crimp or a poor crimp to start with. Hoses also fail due to constant rubbing against a hard surface which wears thru the outer layer and wire wrapping. Kubota uses 2-wire hoses on all their loaders. If you want a stronger hose then move up to 4-wire hose. Proper inspection and maintenance should prevent just about all failures.
Hose failure is a somewhat rare occurrance. Hoses usually fail at the end fitting where it was crimped, mostly due to over flexing at the crimp or a poor crimp to start with. Hoses also fail due to constant rubbing against a hard surface which wears thru the outer layer and wire wrapping. Kubota uses 2-wire hoses on all their loaders. If you want a stronger hose then move up to 4-wire hose. Proper inspection and maintenance should prevent just about all failures.
Kenny & Mad......If I told you guys what I'm going to do with this Loader you say I'm " gravitationally Mad " anyway. By the time I call Torrance,CA and get somebody in Engineering to commit on a modification I'll be dead. I'm asking for a known kit out there in Kubotaland. Has any body seen a kit
advertised for this application? Hey, I'm setting looking at my
Fluid Power Journal off-highway suppliers directory as I type this post looking for a Pilot operated check valve "Kit" for Kubota's FEL control valve for a M series? Need a part number for an approved kit, dealers invited ... Is it out there?????
advertised for this application? Hey, I'm setting looking at my
Fluid Power Journal off-highway suppliers directory as I type this post looking for a Pilot operated check valve "Kit" for Kubota's FEL control valve for a M series? Need a part number for an approved kit, dealers invited ... Is it out there?????
Kenny & Mad......If I told you guys what I'm going to do with this Loader you say I'm " gravitationally Mad " anyway. By the time I call Torrance,CA and get somebody in Engineering to commit on a modification I'll be dead. I'm asking for a known kit out there in Kubotaland. Has any body seen a kit
advertised for this application? Hey, I'm setting looking at my
Fluid Power Journal off-highway suppliers directory as I type this post looking for a Pilot operated check valve "Kit" for Kubota's FEL control valve for a M series? Need a part number for an approved kit, dealers invited ... Is it out there?????
advertised for this application? Hey, I'm setting looking at my
Fluid Power Journal off-highway suppliers directory as I type this post looking for a Pilot operated check valve "Kit" for Kubota's FEL control valve for a M series? Need a part number for an approved kit, dealers invited ... Is it out there?????
MadReferee
Elite Member, Rest in Peace
- Joined
- Apr 28, 2003
- Messages
- 3,862
- Location
- New Hampshire
- Tractor
- Kubota B2710, IH TD6-62 dozer with Drott 4n1 bucket loader
</font><font color="blue" class="small">( I'm asking for a known kit out there in Kubotaland. Has any body seen a kit advertised for this application?)</font>
NO
</font><font color="blue" class="small">( I'm setting looking at my
Fluid Power Journal off-highway suppliers directory as I type this post looking for a Pilot operated check valve "Kit" for Kubota's FEL control valve for a M series? Need a part number for an approved kit, dealers invited ... Is it out there????? )</font>
NO
I have never heard of anyone asking for what you are, and I have never seen such a kit available for any tractor manufacturer.
Your only alternative is to cobble your own. If you do, make sure you purchase DPOCV's that have a high cracking pressure. This will insure that shock loads do not release the valve. Valves available in the USA have cracking pressures that are too low for even top link usage.
NO
</font><font color="blue" class="small">( I'm setting looking at my
Fluid Power Journal off-highway suppliers directory as I type this post looking for a Pilot operated check valve "Kit" for Kubota's FEL control valve for a M series? Need a part number for an approved kit, dealers invited ... Is it out there????? )</font>
NO
I have never heard of anyone asking for what you are, and I have never seen such a kit available for any tractor manufacturer.
Your only alternative is to cobble your own. If you do, make sure you purchase DPOCV's that have a high cracking pressure. This will insure that shock loads do not release the valve. Valves available in the USA have cracking pressures that are too low for even top link usage.
MadReferee
Elite Member, Rest in Peace
- Joined
- Apr 28, 2003
- Messages
- 3,862
- Location
- New Hampshire
- Tractor
- Kubota B2710, IH TD6-62 dozer with Drott 4n1 bucket loader
</font><font color="blue" class="small">( I'm asking for a known kit out there in Kubotaland. Has any body seen a kit advertised for this application?)</font>
NO
</font><font color="blue" class="small">( I'm setting looking at my
Fluid Power Journal off-highway suppliers directory as I type this post looking for a Pilot operated check valve "Kit" for Kubota's FEL control valve for a M series? Need a part number for an approved kit, dealers invited ... Is it out there????? )</font>
NO
I have never heard of anyone asking for what you are, and I have never seen such a kit available for any tractor manufacturer.
Your only alternative is to cobble your own. If you do, make sure you purchase DPOCV's that have a high cracking pressure. This will insure that shock loads do not release the valve. Valves available in the USA have cracking pressures that are too low for even top link usage.
NO
</font><font color="blue" class="small">( I'm setting looking at my
Fluid Power Journal off-highway suppliers directory as I type this post looking for a Pilot operated check valve "Kit" for Kubota's FEL control valve for a M series? Need a part number for an approved kit, dealers invited ... Is it out there????? )</font>
NO
I have never heard of anyone asking for what you are, and I have never seen such a kit available for any tractor manufacturer.
Your only alternative is to cobble your own. If you do, make sure you purchase DPOCV's that have a high cracking pressure. This will insure that shock loads do not release the valve. Valves available in the USA have cracking pressures that are too low for even top link usage.
