CalG
Super Member
- Joined
- Sep 29, 2011
- Messages
- 5,489
- Location
- vermont
- Tractor
- Hurlimann 435, Fordson E27n, Bolens HT-23, Kubota B7200, Kubota B2601
It can't be "too High", unless spilling out the filler and breather ports is an issue.
I am sure there are "some tractors" that the HST does not share the sump with the bull gears /PTO drive etc. But not many.....
I am sure there are "some tractors" that the HST does not share the sump with the bull gears /PTO drive etc. But not many.....
WranglerX
Super Member
On my small MF all hydraulics and power steering start (with pump) at HST and returns to HST as the sump....
As for being to high, probably not a problem unless its puking out a vent or filler tube...
As for being to high, probably not a problem unless its puking out a vent or filler tube...
Thanks for the comments.
I had the fluid changed by the dealer about a year ago. This is my first time to check it since then.
My dipstick shows the fluid level about 3/4 of the length of it. The 2 marks (I guess for Full and Low) are are much lower.
I had the fluid changed by the dealer about a year ago. This is my first time to check it since then.
My dipstick shows the fluid level about 3/4 of the length of it. The 2 marks (I guess for Full and Low) are are much lower.
dadohead
Silver Member
At a minimum, the HST needs a certain oil level to maintain a pressure head to the pump. The transaxle case volume is fixed so on the high side, you don't want it to flow out when hot (expanded) and tilted on a slope. It is probably just fine.
BTW- the transaxle oil change is the most important service your tractor can get. Even more important than the engine oil. Keep doing it religiously as the HST is the weak link in machine life.
BTW- the transaxle oil change is the most important service your tractor can get. Even more important than the engine oil. Keep doing it religiously as the HST is the weak link in machine life.
old and tired
Veteran Member
Been on this website to know that someone filled their "standard" L to the top, had to take 3 gallons out to get it in specs. I lost a connection between a hose to the cooler... drove the tractor back to the barn and filled up 2.5 gallons, no problem.
My tractor normally take 7 gallons to fill... I keep mine at roughly a gallon "over-filled" and no problems for 15 years....
My tractor normally take 7 gallons to fill... I keep mine at roughly a gallon "over-filled" and no problems for 15 years....
alexinPA
Silver Member
Do we check hydraulic fluid level hot or cold?
WranglerX
Super Member
At random intervals when I happen to think about it.... But IF I don't see any oil leaks it really does not seem to matter....
rScotty
Super Member
- Joined
- Apr 21, 2001
- Messages
- 9,433
- Location
- Rural mountains - Colorado
- Tractor
- Kubota M59, JD530, JD310SG. Restoring Yanmar YM165D
Doesn't much matter. Often the sight gauge or dipstick for trans/hydraulic oil will have different level marks for hot or cold. If not, then it is probably meant to be read cold.
That's because the level when hot is a guessing game based on on how hot the oil is and how much that heat has transferred to and expanded the tanks and hoses.
Same for cold readings, with the uncertainty is the outside temperature. On our JD, the cold level in the sight glass varies a good inch from morning to summer day.
amazing how much that level changes.
rScotty
dadohead
Silver Member
Your OM probably details how to correctly read the level for your tractor.
The HST is also the reservoir for my tractor's hydraulic system. The oil level varies a lot based on which attachments are on and position of the cylinders.
The HST is also the reservoir for my tractor's hydraulic system. The oil level varies a lot based on which attachments are on and position of the cylinders.
