PTO and clutch problem

[leslie428]

I have a May 2005 Jinma 284LE with approx 70hrs on it. I have only used it for snow removal and grass cutting.
Yesterday I was blowing snow and I noticed some oil on the ground. Upon further inspection I found it was coming out of the air vent of the hydraulic vent below the seat at the back. See picture. I also noticed that when the pto was engaged and I used the double clutch to let the snow blower empty at the end of a run that a grinding sound came from the transmission (I think).
I disengaged the PTO and drove it back into the garage. The front loader worked fine when I went to raise it and set it down in the garage. I had cleaned the screen for the hydraulic screener last week and everything seemed OK. Has anyone any ideas? Have any of you had this problem?
Thanks for your help in advance.

 

[JohnS]

Offhand, I don't know how the two issues could be connected (pto grinding and hyd overflow).

It is not that uncommon to get some oil from the vent, especially if you just filled it and was excecising the fel along w/3pt. Run the tractor at 1600rpms without using the fel or 3pt, and watch the hyd oil in tank (fill removed). If you have a foaming problem you will see it within minutes. Probably an air leak on suction side.

As for the grinding noise, try exercising the pto without any impliment. engage & disengage, 1000/540 selector, clutch/unclutch. No noise, you will need to try it with a load on it, again.

 

[Affordable]

Sounds like a two fold problem, first is you may need a adjustment on your clutch ,second is Hydraulics too full, air leak,ect.

Tommy
Affordable Tractor Sales

 

[3RRL]

Leslie,
It is not uncommon for hydraulic oil to come out of the vent. This happens to me when I lower the fel very quickly. There might be more fluid in your reservoir than you really need?
As far as the transmission noise, it has nothing to do with your hydraulics. Like Tommy says, check your clutch adjustment and also check the fluid level in the tranny. Did you already change out the Chinese fluid in there? Once I did that, the tranny shifted much better and was a lot more quite.

 

[thingy]

Yeah,basicly just the grinding is the only problem you got,if you got one at all. After 70 hours of pto use,you should be familar with how clutch works,,did it always grind the gears when shifting or did it just start?,,that two stage clutch is tricky,if you don't push the first stage in far enough gears will grind,,,,,wouldn't think what fluid you got in it would cause grinding,,as long as you got fluid in it,,,
I got 560 hours on my 254 same as yours,I grind every now and than,,,,but if it grinds even when you got clutch pushed all the way,,guess your clutch might need adjusting,,,but an occasional grind ain't nothing to worry about,,and it ain't got nothing to do with hydro overflow out breather.[don't think],,,thingy

 

[greg_g]

I used the double clutch to let the snow blower empty at the end of a run

I believe the answer may be related to this statement. Same thing happens to guys that don't take their foot off the clutch pedal when doing extended FEL work.

//greg//

 

[mark1]

Just a thought but if you lowered the loader without the engine running it will overfill the reservoir. as you are not pumping oil from the tank to the opposite sides of the loader rams. I found this out after working on my 284 with the arms raised,and lowering them after I shut off the engine.(and so has many others.)= oil on floor

 

[Soundguy]

Wow.. I'm surprised the sumps run that close to tolerance... ie no room for a little extra oil.... etc..

 

[JohnS]

The new 200 series Jinmas have a new design tank that I believe is slightly larger capacity. Any incedental overflow is just rust prevention. Most of the older farm tractors I see, leak more hyd fluid in a week, than what a jinma will do in a year.

 

[greg_g]

Wow.. I'm surprised the sumps run that close to tolerance... ie no room for a little extra oil.... etc..

I think it's safe to assume that this class of tractor - with loader - would not commonly be seen on the Chinese economy. Hasty engineering concessions for export markets probably include loader and backhoe options. Sp a lot of compromise engineering is involved to keep the costs down. Since one helluva lot more Chinese tractors are sold domestically, it sorta explains why they've not yet engineered additional fluid capacities into their export models.

//greg//