Hydralic Oil Question

greg_g · Oct 8, 2004

Harry's absolutely correct; gear oil for this transmission and front diff. I experimented with 80W140, but found it too thick to pass through the bearing sleeves. When I flushed and replaced it with 80W90, I learned my lesson in non-foaming gear oils. The stuff I bought - wasn't ! And bubbles don't lubricate wortha crap.

Morale of the story is, non-foaming 80W140 in the front diff if you don't use the tractor in cold weather. Non-foaming 80W90 if you use it year-round in colder climates. Non-foaming 80W90 in the transmssion in most climates.

I'm a bit late, but will be doing the 50 hour fluid change on my KAMA soon. I wanted to use 80W90 Spirax EW, but nobody around here carries it. I'm going to use 80W90 Spirax HD instead, front diff and tranny.

//greg//

SevenCorners · Oct 9, 2004

Well I put in new non-foaming 80w90 in the tranny as Greg recommended. It really quited it down, no more loud gear whine. The 3pt is raising and lowering immediatly upon startup. Very easy change I would recommend it to anyone who has not already done it.
I bought an oil filler tude at Autozone that screws onto the nipple of a 5 gallon oil can. It made it very easy to stick it into the transmission filler hole. I turned the 5 gallon bucket upside down and rested it on the seat. The oil took a good 30 minutes to fill but I didn't spill any.

greg_g · Oct 9, 2004

( Well I put in new non-foaming 80w90 in the tranny as Greg recommended. It really quited it down, no more loud gear whine. The 3pt is raising and lowering immediatly upon startup. )
The two are actually unrelated. Unlike a lot of grey market tractors, your Jinma tranny and hydraulics don't share. You already know where the gear oil goes. 80W90 gear oil viscosity is roughly the equivalent of 20W40 motor oil viscosity.

The hydraulics reservior is completely separate, the fill point being under the seat back. For that I recommend AW32, which is roughly a 10 weight equivalent.

RICHARDG · Oct 9, 2004

OILS,HUM,,,I use 40 weight nondetergent in trans and in front end,,,used 30 weight in trans and front end first year,,,no problems in over 300 hrs of WORK. Northern recommends using what I am useing,,,so,,,,
My hydro has a dipstick,,you don't need to guess if you got it overfilled,,,don't yours? thingy

Soundguy · Oct 11, 2004

A question about the differences between the nortrac and the other variants of the jinma.

I see lots of discussion baout basically having to do quite a bit of servicing of the oils, etc.. from the 'lower' priced dealers.. etc.. Is all this necescary from the slightly higher priced dealers.. like nortrac, etc. ( are they taking care of some of the 'first-flush' issues, etc before the user gets the tractor?

Soundguy

ToolManRick · Oct 11, 2004

Hi Soundguy. I can answer pertaining to the Nortrac, since that's what I've got. The fluids in mine were fresh, however I think one of their recommendations is overkill and that's greasing all fittings every 10 hours of use. Pretty sure they're taking precaution to prevent warranty issues. I don't have my manual handy at the moment, but most services seemed reasonable. I can be more specific if you'd like once I'm back at the house.

Soundguy · Oct 11, 2004

Thanks for the info. I usually grease my tractor in the morning before I go out and use it.. so mine actually gets greased more often than 10 hrs.

Soundguy

SPIKER · Oct 11, 2004

I grease mine probably at or less than the 10 hr mark too: usually cause I have lots of grease guns handy, also cause I WORK on machinery all the time and KNOW that the grease does not do a lot but putting new in and getting the old encrusted grease out & away is what makes them live nice & long lives. I still haven't FIXED my dirt seal felt on the front end so maybe I shouldn't say much more /forums/images/graemlins/blush.gif anyhwo the FEL and HOE gets lubbed more than say the brake piviot. and clutch gets more than brake and steering gets mosty a quick shot with a tank or two of fuel as I keep FEL on 100% of time. not to mention the fact I can't fugure out for the life of me how that dang FEL support rod/pipe is susposed to work! lol /forums/images/graemlins/wink.gif I will be changing my OIL in the small engines soon though. anyone have a thought as to how SOON you can go to 100% synthetic for say a small briggs single cyl 6hp mower engine? it has maybe 10hrs total run time on it so just getting broke in.

Mark m

RICHARDG · Oct 11, 2004

Grease mine every 50 hrs or so,so far,,use good grease,,,now ifin I had a hoe or front end loader,,would grease more often,,those two things anyways...can't see why you would need to grease every thing every 10 hrs or less,,overkill,,,and messy hands,,,know what I mean? Is 40 weight[or 30 weight for that matter]as good as gear oil? Well,you just heard it,,it seems some of the heavier gear oils don't work,,and some foam,,so,yeah maybe so. Don't know what the flushing would have to do with what kind of oil you use in trans or front end,,,maybe you could enlighten us sound person? thingy

Soundguy · Oct 11, 2004

( what kind of oil you use in trans or front end,,,maybe you could enlighten us sound person? thingy )

I think you've got my name mixed up with someone elses post. I wasin't discussing different weight oils / front / rear / foaming issues.. was someone else.
/forums/images/graemlins/tongue.gif
Soundguy