Hydraulic fluid blowing out the filler cap vents

[hbaird]

Hydraulic fluid is blowing out thru the vents in the filler cap. Not a lot and not constantly. I have not had the opportunity to see it happen. I hope to this week end when I can have someone else work the 3pt. up and down. I have tightened up a couple of leaking joints and this is the remaining leak. Does any one know why it is blowing out?
Thanks for any comments,
Harold

 

[JINMA224XR]

<font color="blue"> Hydraulic fluid is blowing out thru the vents in the filler cap. </font>

Hey Harold,

Check all of your Hydralic fittings for tightness. Yours may be sucking in air somewhere. Mine was. The 3 bolts that hold the filter assembly in, under the seat were not tight on my 224. After I tightened those bolts, mine was pretty much ok, but If I go up a steep incline, I will still get fluid overflow, but I think that is normal. I'm using the Tractor Hydralic/Transmission Oil that WalMart sells in mine. So far so good.

How's the sailing going? /forums/images/graemlins/smile.gif That's one of the main reasons, I moved down to the Coast.

Have a nice day,
Joe /forums/images/graemlins/cool.gif

 

[thingy]

It maybe too full,,I check mine with dipstick SCREWED IN,,and been doing it that way for close to 400 hrs now,no hydro problems,,,but even at that when going up a steep hill some will leak out,,don't think its blowing out,,,thingy

 

[greg_g]

</font><font color="blue" class="small">( Does any one know why it is blowing out?)</font>
The most common reasons Harold, in order of probability:
1. overfilled
2. still contains OE "fluid"
3. does NOT contain non-foaming hydraulic fluid
or any combination of the above.
4. air leak

The hacks that my Jinma dealer passed off as diesel/hydraulic mechanics wasted a lot of time and money chasing air leaks on my second JM254 - air leaks that ultimately never existed. For reasons that escape me to this day, the boneheads even changed pumps - and it still spewed out the back vent. The other problem was - after startup on a cold morning - the power steering and TPH took an unreasonably long time to function properly .

While they were wasting their time and mine, I read the labeling on their hydraulic fluid pails. Cheap generic crap, with no mention of anti-foaming additives, and the thick AW100 viscosity at that. They said that's all their employer would give them to work with. When they ultimately failed to stop the spewing mess, I took matters into my own hands; drained their fluid, flushed the system with kerosene, and filled with a premium brand of non-foaming AW32. Then I cleaned all the accumulated oily filth off the backside of the tractor.

My 30 acres is all hillside, some of it pretty radical. From that point on, the steering and TPH worked much faster and didn't need a "warm up period" on a cold morning. Plus, it never spewed another drop of hydraulic fluid out that vent - right up to the day I got rid of it. And I check my levels with the dipstick threads just sitting on the hole.

//greg//

 

[mark1]

One thing some people don't realise is that you can overfill the reservoir by= If you have a loader and lower the bucket without the engine running.(when the engine is running the pump supplies oil from the reservoir to the back side of the loader cylinders pushing the arms down while the oil from the front of the cylinders returns to the reservoir)without the pump running no oil is sucked from the reservoir.This equals a puddle under the tractor.
/forums/images/graemlins/blush.gif

 

[Harrygoodwrench]

Ditto Mark1,
Same happened to me. Drove me crazy. Then was explained that if you lower with engine off the oil is not pumped into the other side of cylinder, it creates a vacuum or void and instead it goes to resevoir. Then would blow oil out of vent/fill port.
If you have float I believe you can lower it in float mode with engine off. I however, just make sure I lower bucket with engine running. Its safer to have bucket lowered.

 

[andyspain]

Yes, my 284 still losses a bit of oil, but I too live in a mountainous region. I took the advice of the kind gents who frequent this site and changed the Chinese oil. Once you've seen your oil oozing out in great waves of foam you can live quite comfortably with a couple of drips now and then. There was another reason for my problem. Unless you are going to fit an external oil filter, which by the way is not necessary, I will not go into.