Update on all 7520s

[MtnViewRanch]

Brian, blue paint slows things down considerably. Problem solved.

CuzPat, we have some good numbers now from several people. If your loader isn't close to that, it needs fixed, and your dealer should be happy to be involved.

Dave, it's not just the blue paint, but the heavy duty digging bucket that I usually have on. I will time mine with my 84" std duty bucket this weekend when I get up to the ranch.

This is so great that this has finally been answered. Now all we need is to get the guys that have these hydraulic problems taken care of and I believe that everybody will be happy once there tractors operate as they should. These owners will be impressed, once their tractors operate properly. The 7520 is a very capable machine.

Good luck to all.

 

[CuzPat62]

CuzPat62, Where can I purchase a Diamond plate aluminum canopy?
hugs, Brandi

Brandi,
There is a man here in Alabama that makes them and he distributes them to tractor dealerships all over the Southeast. I will locate his name and number and post for you tomorrow. I got my canopy from my Mahindra dealer and it was one of this gentleman's canopies.

Will get you that info tomorrow as promised.

Billy

 

[CuzPat62]

Dave,
I have the Mahindra bale spear on my tractor right now. Do I need to put the 84" bucket back on before I do a test on my loader? I will try to test mine ASAP and post the results.

 

[MtnViewRanch]

OK, I about froze and someone owes me a Starbucks Grande Mocha [ quote ]

Ok, I just bought & sent you your Starbucks, not sure how good it will be when it gets to you though.

Hope you enjoy it

 

[SPYDERLK]

Dave,
I have the Mahindra bale spear on my tractor right now. Do I need to put the 84" bucket back on before I do a test on my loader? I will try to test mine ASAP and post the results.

CuzPat. Neither of those implements is heavy enuf to affect the lift rate to a degree you would notice. The hydraulic pump is positive displacement and therefore delivers a certain volume per revolution. Without a load on the arms there is very little loss to internal pump leakage - and even with a heavy load theres not much more. You dont need to change the implement.
larry

 

[CuzPat62]

My dealer is sending a Service Tech out to my place on Monday to put the new KSB sensor/timer and jumper wire on. That will be a good time to do the test. I will get it done on Monday while the Service Tech is here and then get the results posted. One of us can run the stopwatch on my cell phone and the other can operate the lift. That way there won't be any indescrepencies with getting it started and stopped on time while trying to operate the loader at the same time.

Billy

 

[RedRiver]

Good to see everyone elses tractors are lifting to the same specs as the one on our lot, for a minute there you guys had me feeling like I forgot how to count.

 

[DavesTractor]

CuzPat. Neither of those implements is heavy enuf to affect the lift rate to a degree you would notice. The hydraulic pump is positive displacement and therefore delivers a certain volume per revolution. Without a load on the arms there is very little loss to internal pump leakage - and even with a heavy load theres not much more. You dont need to change the implement.
larry

I agree with Spyder. A few hundred pounds either way won't make a tenth of a second difference.

The suction line fix would not seem like a reasonable fix for a loader that is 50% too slow, but I am told it will fix it. We had the West Coast Mahindra service school here at our place last Tuesday and Wednesday, and that was an item they went over. I've not tried it myself, so I will be interested to see the results posted.

By the way, your Mahindra dealer should be attending these schools if at all possible. There is a lot of good info, and they need to care enough to keep up on it. We missed a few dealers due to bad weather, guys getting sick, etc., but we had a good turnout overall.

 

[SPYDERLK]

Dave, its because the bubble in a suction line expands a lot due to the vacuum, limiting the ability to pull fluid from the reservoir. - - The pump draws its correct volume but theres much less liquid in it. Then on the pressure side the bubble is compressed to near zero volume and contributes nothing to flow.
larry

 

[MtnViewRanch]

Timed my loader this weekend, now have in mind that I have the hydraulic self leveling option, which means that there is a lot of fluid going to the curl cylinders also. I timed at 2500 rpm's (scary with no load) and 1750 rpm which is a more common rpm range for me.

2500 rpm, ground to full height 7.5 seconds
1750 rpm, ground to full height 8.5 seconds

I would have thought that at 750 rpm slower, that the lift time would have been slower than it was. Maybe the self leveler does other stuff with the fluid, I don't know. All I know is that I am happy with the lift times that I have. I did each test 5 times, same result each time.

I was going to time the loader on my Case 580E so that we would have a commercial tractor to compare to, but my brother took off with the keys. Maybe at another time.