Deere Dude
Elite Member
- Joined
- Feb 10, 2011
- Messages
- 3,887
- Tractor
- John Deere 3720
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.
whining hydrostatic
- Thread starter djp1218
- Start date
- Views: 22744
dadreier
Member
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.
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.
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.
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
Platinum Member
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.
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.
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
Elite Member
What exactly does your owners manual say about checking the hydraulic oil with the dipstick?
k0ua
Epic Contributor
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
James K0UA
