Lubricants for Jinma 284

YukonJeff · May 4, 2004

Just bought a 284 last week. What hydraulic, and gear oils are you guys using. I was told buy the dealer that he used 15W40 all around. That sounded o.k. for the engine, but not the trans nor the hydraulic system. Also, I'm getting some seeping of hydraulic (?) fluid from the filler plug nut. Anyone recommend a good gasket. I thought about using some Baker's Seal, but I'm open to suggestions.

Additionally, the manuals supplied are weak on quanities for the various reservoirs. Any infor would help for this model.

Soundguy · May 4, 2004

They told you 15/40 for the gear oil too? I've heard it all now...

Soundguy

YukonJeff · May 4, 2004

Yeah, 15W40. Sounds strange huh? Wonder how long it will be before all the seals/o-rings start to.... I think I will have to trust my instincts here and go with the engine takes engine oil; transmission takes trans oil; hydraulic takes and so on.

Harrygoodwrench · May 4, 2004

This has been debated many times on the Jinmas. All I can say is I use 15w 40 in engine, 80w 90 in front diff and trans and universal huydraulic oil for hydraulics in my Jinma 224. Some prefer engine= same, 30 w non detergent in trans, front diff and some type of hydraulic fluid. Check these links for lots of info on Jinmas.

http://nortrac.proboards26.com/index.cgi

http://www.johnstractor.homestead.com/

YukonJeff · May 4, 2004

Thank you sir...sometimes I've just have to hear myself out, especially when I have a conflict with past experiences. /forums/images/graemlins/cool.gif

greg_g · May 5, 2004

Since the front diff and tranny are vented, many conventional gear oils will foam. I recommend non-foaming 75W90 in both. Non-foaming is important. In cold conditions the "universal" stuff (303 oil) is too thick for the suction side hydraulic filter. I recommend AW32 (10wt) for almost instant hydraulics availability in all weather. 15W40 is just fine for both the engine and the injector pump. If you really want to be **** about it, you COULD use compressor pump oil in the injector pump.

//greg//

Soundguy · May 5, 2004

Couldn't a universal oil.. like jd 303 be put in the diffs and tranny? Ford/NH all have vented diffs at least in their gear tractors, and use the 134d oil.. ( a universal hyd/tranny/diffy ) oil.. Non foaming etc.

Soundguy

greg_g · May 5, 2004

( Couldn't a universal oil.. like jd 303 be put in the diffs and tranny? )
The "universal" in this case means one oil for both hydraulics and transmission. Not a few tractors have only one fill point for both, my Yanmar being of that type. But it's hydraulic flow rate is engineered accordingly - to handle the thicker viscosity. The OE Jinma filter is not.

When you have a tractor like the JM284 - and my Kama - there's absolutely no reason not to use the RIGHT lube for the right job. Transmissions and differentials are geared devices - use GEAR oil.

//greg//

Soundguy · May 6, 2004

( Transmissions and differentials are geared devices - use GEAR oil.
)

Better read those oil specs a bit closer...Both JD 303, NH 134d oils, ( and hytran, and hyguard.. ) and the equivalents sold at many stores under many brands as UTF are all universal oils. and are speced for final drives , hydraulics and transmissions . They are also able to be used in extreme pressure steering gear boxes, worm drives, and power steering systems. They are in effect a 'gear oil'.. as well as many other things. For instance.. NH specs use that 134d oil in almost all tractor applications for the whole tractor ( front and rear final drives, hydraulics, power steering, steering gearbox, wet brake systems, belt pulley oil baths, transmissions, including hydro setups, front axles and hubs, in situations wher ethe front axle/hub is seperated from the final drive ) except the crankcase, in all but extreme temperature situations.

But yes.. if there is a manufacturer spec.. I would stick to that.

Soundguy

greg_g · May 6, 2004

( ( Better read those oil specs a bit closer...Soundguy )
And you better read my POST a little closer Chris. If you want to put 30wt universal in your JD and NH, I make no argument. But the suction side hydraulic filter in the Jinma 2xx series just won't pull 30wt ANYTHING in cold weather.

Since it's a single loop system (same circuit for steering and TPH), you can't even steer - unless and until you wait for the pump activity to warm the heavy oil up enough to attain normal flow rate. The colder the weather, the longer it takes to get hydraulics. 10wt AW32 avoids this.

Jinmas also employ ancient transmissions and differential technologies; flat/square gear faces, no fancy bevels, no synchros. Pure old fashioned grunt. Again, use universal anything you want in NH and JD. But use GEAR oil in Jinma transmission and differentials. Non-foaming gear oil at that.

//greg//