6530 Loader falling problem

[JIROBBI]

Hi, I have the 6530 and have had loader problems ever since I got this tractor. I took it back and dealer checked the loader for fall with whatever weight Mahindra told him to use. The loader will fall when I only have the forks (Skid Steer type hook up, no bucket on) and an empty pallet overnight.

I had a Kubota L3750 and it would hold a full bucket of dirt all night and longer.

What should I expect from this loader? Where is the bypass of fluid? Is this part controled by the valve that I use to lift and lower the loader. Can anything be done to stop this fall even if the dealer will not do it. The dealer increased my lift slightly but this does nothing for the fall of the loader in less than 12 hours even with an empty bucket.

Thanks,
Jirobbi

 

[AchingBack]

My Mahindra 2615, does the same thing. It doesn't bother me, as I never expected the loader to stay elevated overnight. I don't have my loader manual, (mine is made by KMW) in the house, but I'm confident the instructions will read not to leave the loader raised, and unattended. What is the purpose of leaving it in the air?

 

[JIROBBI]

Hi,

I would not have an reason to leave it up all night that I know of right now. It does fall with dirt in it while I shovel dirt from it or have something in it that I am transferring to something else like cement or other material. I used what the Kubota as an example on one that did not fall at all as I worked.

I sometimes use a pallet on my forks as a platform to get onto and do work while it is in the air. I chain the pallet to the forks just in case.

There is so many jobs that I like to do with the loader up. If it is working with things in or on the loader and I am on the ground I can go around and start the tractor and adjust it but I would like it to stay up longer than it does.

I used my forks to hold one side of a light pontoon boat up while I replaced the bunk wood on the trailer. I would lift the side up and before I could get off the tractor and onto the ground to work it would fall.

Thanks,
Jirobbi

 

[beenthere]

All has to do with tolerances, and yours may be on the "loose" end. Seals could be replaced if/when it gets to be intolerable, and then you can only hope that it is better.

As said, some do, some don't hold the bucket.

 

[JIROBBI]

Hi,
I posted this problem before. I believe that something can be done and I will pay someone to fix it if I can find out what to do and it is not too expensive. The dealer tells me that it is within specs. Do all Mahindras do this. Could the replacement of something Help if I complained enough? That part is out of warrenty as of last August.

I guess what I really need to know is does the problem exist in the hand valve and could a Hyd Shop do something about that? Maybe rebuild the valve. The problem seems to be in the curl for the most part. If a Kubota will hold why won't the Mahindra hold.

As I look back the loader on the Kubota was a Bush Hog Brand loader. The hand valve if I remember was a replacement and not actually a Bush Hog Brand. Would the valve be where the bypass takes place? I guess I could unplug the curl hose and see if it drops then. Would that be an option to check it by?

 

[J_J]

Although most loader valves leak some, and some will leak down over night, it is the quality control of the manufacture that is responsible for the outcome. Some manufacturers allow a certain tolerance on the spools, and therefore the amount of fluid to leak, and call that good. Most of the spools are almost a press fit meaning that the space between the spool and valve body is very small. A well made spool with close tolerance will not leak as much as vendor A, and they will tout the fact when trying to sell the product. As the spools wear, they leak more, on the inside, and also out the spool assembly so it is visible. Some spool have o-rings on the end pieces. My Case valves have o-rings that can be replaced, but does nothing for the worn spools and lands. There are pilot operated check valves to add in line to the cyl, to prevent loader dropping until you apply pilot pressure by activating the valve. I think that even OSHA requires something like this when workers are working under one of these machines, for safety reasons.

 

[J_J]

Hi,
I posted this problem before. I believe that something can be done and I will pay someone to fix it if I can find out what to do and it is not too expensive. The dealer tells me that it is within specs. Do all Mahindras do this. Could the replacement of something Help if I complained enough? That part is out of warrenty as of last August.

I guess what I really need to know is does the problem exist in the hand valve and could a Hyd Shop do something about that? Maybe rebuild the valve. The problem seems to be in the curl for the most part. If a Kubota will hold why won't the Mahindra hold.

As I look back the loader on the Kubota was a Bush Hog Brand loader. The hand valve if I remember was a replacement and not actually a Bush Hog Brand. Would the valve be where the bypass takes place? I guess I could unplug the curl hose and see if it drops then. Would that be an option to check it by?

Ask the dealer what the leakage rate is, and if he says something like 10 drops per min, that might be within spec. Maybe all the new tractors leak down over night. You can check it your self and see if he is talking bull.

El cheapo way is to add a needle valve in the circuit and when you have the platform at the height you want, crank down on the needle vavle and fluid has no place to go. That is assumming that the cylinders are not leaking.

 

[JIROBBI]

Hi J.J.,

Thanks. Where would I put the needle valve in this case? I have all quick connects for my hoses. The curl is what falls the quickest. My dealer tells me that it is within Mahindra specs. I am very disapointed to say the least.

Thanks,
Jirobbi

 

[J_J]

If the curl is pulling on the cyl, then the needle valve would go on the pressure side, and in this case, it would be the rod end port. You should be able to reach this vlave while in the bucket. Once locked in place, the needle valve will prevent the cyl fluid from releasing into the valve.

If the cyl happens to be leaking, the cyl will try and equalize, and might drop some, but not all the way, because the fluid is trying to bypass to the base end.

The way to test a cyl, is to extend the cyl fully, and remove the rod end hose, and try to extend. Some fluid will drain out, but if the pressure on the base end causes fluid to come out of the open port, then the cyl is leaking internally. You reverse the procedure for the rod end test. The cyl might leak in one direction, and not the other.

 

[MtnViewRanch]

I think that it must be the luck of the draw. My 7520 leaks down fairly quick, as in 10-15 minutes. My 3215 leaks down very slowly, as in hours. If yours stays up for 12 hours, you have nothing to be complaining about in my opinion. According to Mahindra, my ML275 loader has an allowable leak down rate per 10 minutes of .43" on the lift and .97" on the tilt. My ML111 loader is .97" on the lift and 1.9" on the tilt. And yet my ML111 loader barely leaks down at all.

My feeling is that you are using the loader for unintended uses and thus the unsatisfactory results. Yes, maybe some others work while yours is not, and that sucks, but it is not really any fault of Mahindra.