whining hydrostatic

[MrChris]

Hi Was wondering if someone could tell me just how much my new mahindra 2816 should whine when i press the forward or reverse peddle it was just delivered yesterday and noticed that it seems to whine pretty loud also what rpms should i be running this tractor at when using the loader can anyone help me with this? thanks

Generally you will hear more whine in hi range until the tractor gets going, lower in mid and almost nonexistent in low. I work mostly in med and the whining is minimal. There is a grease jerk for the pedal pivot under the floor board.

 

[djp1218]

ok well i feel alot better knowing that some whine is normal i want to thank everyone for the help this site is great i tried another one this morning and didnt get a single answer

 

[whistlepig]

If I feather my pedal mine seems to whine more also. When the pedal is pushed all the way down the whine goes away.

 

[MrChris]

You may even get more brand and model specific answers (2816) if you post in the Mahindra section.

 

[djp1218]

does that fitting grease the rod going into the unit? should it jump right back? it comes back up like a hatch on a car raising on its own

 

[whistlepig]

I don't know about Mahindra but my tractor has a grease fitting on the hydro pedal where it pivots on it's mount.

 

[MrChris]

does that fitting grease the rod going into the unit? should it jump right back? it comes back up like a hatch on a car raising on its own

There is some damping on the return of the pedal, but the tractor always stops as you raise your toe off the pedal. I would imagine cold can effect the speed of return somewhat, but I live in GA and it really doesn't get very cold for extended periods here.

 

[djp1218]

ya it does always stop do you check you fluid level on your mahindra with it running or shut off?

 

[k0ua]

I have always checked with the engine off and setting on level ground, All Hydros whine some. But some are much noisier than others. The smaller the tractor it seems the more they whine, Some of the Kubota users have reported major whine reduction by switching to SUDT2 fluid. The colder it is the more they whine, and of course the higher the range you are in, and the more load you are putting on it, the louder it will whine. When it just screams at you, then you have the parking brake on (don't ask how I know:ashamed. The newer they are the more they whine, As they break in, they whine a little less, My current tractor has less whine than any of the 3 hydro's I have owned. My neighbor had a BX Kubota for a while, and it whined pretty loud.. Some users have reported that filling the lower Part of the ROPS with spray in insulation foam made a big difference in the whine, and indicated the belief that the whine sound was resonating up thru the ROPS. Good luck with your new tractor.

James K0UA

 

[djp1218]

thank you very much for taking the time to answer me im gonna have to say that im low on fluid when i check the level with the tractor off it just touches the dip stick

 

[Deere Dude]

Make sure the emergency or handbrake is completely off and not dragging. I forgot mine a time or two and noticed some whining from the drag.

 

[djp1218]

your the second one to mention the e brake i am going out in a few to check on all the things that were mentioned to me they have all been good places to start

 

[dadreier]

Just for the sake of comparison, the hydro has been nearly silent on my 2817 since new. Different model, but similar.

BTW, does your owner's manual have specific instructions concerning engine RPM during the early break-in period? Mine did, and I was careful to use that as a guide until enough hours were on the unit.

 

[Grandad4]

your the second one to mention the e brake i am going out in a few to check on all the things that were mentioned to me they have all been good places to start

I'll just add something else that might be useful to know. As others have said, some machines whine more than others, but none of them like it when you try to putt-putt around at low rpms. You have to get the rpms up enough to get adequate flow and psi coming out of the hydraulic pump that feeds fluid to all the hydraulics. The whining comes from the hydraulics straining to do whatever work they do (My wife says I whine when worked too hard, so I must be hydraulic, but let's just leave it at that ).

Obviously, how much to rev the engine varies so it's kind of a trial and error thing. With some tractors you don't need to rev it a lot to get adequate flow and psi; with others you have to run it pretty fast. If you rev the engine up to full pto rpm and can hear the whine over the engine, well that's probably the best it's going be with that tractor. If the whine is louder than that when you have less rpm, you probably need to rev it up more. Also, if you're running it without adequate flow and/or pressure due to low rpm or not enough fluid, the hydraulics with tend to get overheated. The lines ordinarily get pretty hot, but will burn your hand to the touch if overheated and there will be a funny aroma. Again, that's just like me when overworked.

 

[djp1218]

Yes I have played around with it a little and found that the whine is alot less in low range about 1800 or so rpms. Im kinda nervous about how long i use it due to the fact that I am really not sure if I am low on fluid or not, It seems to be reading at the very lowest mark on the stick with it wamed up and shut off. I am going to call the dealer tomorrow to see if its supposed to be checked running or off.The bucket and hoe seem to be working fine with no whine at all its just the peddle that seems to whine when pressed.Could the fluid being a little low add to the whine even if the other hydraulics are silent?The tractor is a leftover and has set for a long time the place i bought it agreed to put a thumb on it and load the tires maybe they over looked checking the fluids(no excuse but possible)I also need to find out if the peddle returning up is suppose to be kinda slow it takes about 3 secs to come back up another thing i should say is that it hasnt been much warmer than low 30s here all wk

 

[puckgrinder85]

I would assume you check the oil level with it off. Dont see any reason for checking it while running (sounds like a liability with getting run over and what not for the company).

I doubt the level would change much anyway running or not, depending on the system you have oil just circulating back to the tank or a pump not pumping anything because there is no demand. Air in the pump will dramatically increase noise from cavatation.

 

[djp1218]

yes and checking it running just shows it splashed up on the stick if i had a trailer i would bring it back and ask them to go through it i think i got a pretty good deal on it and dont want to expect to much but the fluids should have been checked and fittings greased the owner delivered it himself which i thought was pretty good but he kinda had the attitude that his salesman went too low on the price but they are the only mahindra dealer around and i dont want to burn any bridges thank god for this site

 

[Don87]

yes and checking it running just shows it splashed up on the stick if i had a trailer i would bring it back and ask them to go through it i think i got a pretty good deal on it and dont want to expect to much but the fluids should have been checked and fittings greased the owner delivered it himself which i thought was pretty good but he kinda had the attitude that his salesman went too low on the price but they are the only mahindra dealer around and i dont want to burn any bridges thank god for this site

What exactly does your owners manual say about checking the hydraulic oil with the dipstick?

 

[k0ua]

One other thing, when you are checking that fluid with the tractor engine off, make sure that your 3pt is down, and your loader bucket is level and flat on the ground. There is a big difference if fluid level on the stick with the loader up and the 3pt up.. You should always check with everything down. The 3 seconds for pedal return seems wrong to me in all of my 3 hydro tractors experience.

James K0UA

 

[djp1218]

the manuaul says run it until its warmed up then check it didnt say shut it off and it didnt say leave it running