I have my 300 JD garden tractor fitted with a loader presently on blocks for lost of hydraulic pressure in the FEL will be checking that out soon but in the mean time I have a question about my HST whining when the tractor is under load is that normal ?
Hydro stat transmission whine
- Thread starter emileo
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sweettractors
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First, I would check filters and fluid levels. Ken Sweet
davedj1
Veteran Member
It would depend on your definition of "whine"
I think all hydrostat transmissions whine to an extent. Maybe you are low on fluid and that's why you have lost your loader hydraulics and have a severe whine?
I think all hydrostat transmissions whine to an extent. Maybe you are low on fluid and that's why you have lost your loader hydraulics and have a severe whine?
oldnslo
Super Member
I believe the FEL hydraulic is supplied oil by the HST charge pump. No FEL would point towards loss of flow which will make the HST noisy. Like Dave suggested, check the fluid level.
RalphVa
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All 3 of the JDs with HST have had the whine. Guess if you don't like it, you gotta go to a 3 series or Kubota L series gear. LOTS heavier tractors. In most cases, you don't need all that weight. Take the HST whine.
Ralph
Ralph
Roadworthy
Elite Member
It seems most if not all HST tractors are prone to whine. Some fluids may cause less whine than others. Use what the manufacturer recommends. Avoid mixing different fluids.
Sawyer Rob
Super Member
That can't be true...
When I posted that I can't stand the whine of those whiner transmissions, numerous folks here "claimed" THEIR tractors had NO whine at all!! Of course, they are the same guys that say, HUH?? all the time! lol lol
SR
4570Man
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I know you don’t believe it and probably never will but some HST trans don’t whine. I’ve had 2 HST+ Kubotas and they neither one whine. The cheaper economy grade Kubotas whine terrible. And my hearing is fine. What about your HST dozer. Does it make the dreaded whine?
The fluid is fine I top it up last fall with JD Hy guard when I change the filter not sure what type was in there but it didn't make any difference with the whining which for me seems a little to loud . and by the way I found why I lost the pressure to the FEL the key from the coupling driving the pump sheard off. FYI the FEL on this tractor does not get its pressure from the transmission but it dose drive the hydraulic pump, I know very confusing . (This tractor is a mutt lol has kubota orange rear rims ,a very well made custom loader and a Honda 20hp motor
:confused2:
TnAndy
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My previous New Holland 1925 hydro had no whine at all. My neighbor has a NH TC30 and it screams so loud it sounds like it's going to fly apart.....I can hear it 1/2 mile up the road at my house....seriously. Dealer said nothing is wrong with it. Another neighbor with a Kubota HST, no whine.
LouNY
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Is this on a JD 300?
What model of transmission is that?
Is it a Tuff Torq?
The last I knew the recommended fluid for those was 20W-50 motor oil.
Fallon
Super Member
The more mass there is the better stuff dampens sound, especially higher frequency sound. Therefore the bigger & heavier the tractor the less whine you will hear, all things being equal. Things aren't always equal though so it's not always the case.
My L4060 is a bit quieter than my L3200 was. But both whine(d) a bit.
If you run a HST in to high of a range the relief valve will kick in & squeal a lot more than it would otherwise.
My L4060 is a bit quieter than my L3200 was. But both whine(d) a bit.
If you run a HST in to high of a range the relief valve will kick in & squeal a lot more than it would otherwise.
LouNY
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Thats good, but if it is a Tuff Torq which I think it is when I drained and refilled my lawn mowers transmission I used a synthetic 20W-50 as per Tuff Torqs web site and it made quite a difference in the noise and performance.
How do I find out if ti is Tuff Torqs ?
Texasmark
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Initially my 6530, with hydro steering and shuttle gear shifter ran really quiet.....not bothersome and the loader ran up and down at a good rate. 13 years now on that tractor and I started getting a progressively louder whine and the loader slowly started operating slower for a couple of clues.
In short, the pipe from the main sump that feeds the main and steering pumps through a Neoprene rubber adapter in the shape of an alphabet capital letter "F" with one input and 2 outputs had cracked at the interface to the pumps and was letting air and fluid into the pump. Replaced the adapter hose and performance and noise went back to new condition. I was puzzled at first thinking it was time to change the TDH fluid or it was letting me down but I had changed it last year and checking, it was clean.
In short, the pipe from the main sump that feeds the main and steering pumps through a Neoprene rubber adapter in the shape of an alphabet capital letter "F" with one input and 2 outputs had cracked at the interface to the pumps and was letting air and fluid into the pump. Replaced the adapter hose and performance and noise went back to new condition. I was puzzled at first thinking it was time to change the TDH fluid or it was letting me down but I had changed it last year and checking, it was clean.
Texasmark
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I have a JD L110 that has rolled the hour meter. It has an appropriately sized TT transaxle for that 42" machine. Initially it was filled with 10w-30 from the factory. I was running in mud one day and on coming out decided to clean up the tires so I started doing loops where I'd turn hard in both directions with the pedal on the metal. Trashed the transaxle. Took it apart and ordered new parts from TT. Nice folks, great service and free Gimmie Cap in box with needed parts. Also in the box was a note saying to up the refill with 10w-40 full syn.......that well over 15 years ago......might be even thicker recommendation today.
FF to 2016, Ferris Z700, 61", transaxle oil is 20W-50 full syn. There is a message there!
