Pete S

1989 Case IH 385

OK,...............tractor transmission/Hydraulic system is in NEED of a drain/filter!

What are some tricks to "puge" a loader with a joystick? It has lines that are connected with threaded fittings, and NOT the couplers.

AND, who thought it was a good idea to put a 19mm socket head drain plug in the 4x4 gear box at 3K foot pounds!

I don't have a 19mm socket/allen head,..............Sears had a 17mm............and of course it's the weekend.

SO,........go to Fleet Farm and get a 3/4" headed grade 5 bolt, and make a driver for the impact. WELL it's too tight for my 1/2" drive "cheapo" impact and a bar would surely break the bolt.

The torch may be needed to heat the housing a bit.

What bothers me is that it probably has never been out!

Thought/ideas?

Thanks!

chrpmaster

Most of the time when I "purge" hydraulics I just work them in and out and they will get rid of any air on their own. I just make sure the hydraulic fluid stays full and go for it.

Can't help you on the drain plug. I have one on a nice Quincy compressor that baffles me how they put it in cause it ain't coming out now! The only other option is drilling it out and I'm not sure its worth all the effort.

__________________
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Having government manage your health care is like having Michael Vick watch your dog.

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Pete S

I'm refering to getting all the old residual oil out of the hydraulic lines on the loader.

Thanks,
Pete

Cannuck-elhead

Pete, couplers or not makes little difference since even quick couplers seal (with a big spring) when you split them so you're not easily going to drain lines that way either.

I'm a little curious though why you're concerned about draining lines in the first place. A normal fluid change doesn't involve draining lines. Mostly because it's such a PITA to get all that air back out later. In fact I can't recall seeing in any of the dozens of shop manuals for various pieces of equipment I've read through over the years seeing that idea mentioned except under very rare circumstances, like serious contamination.

In the greater scheme of things the few ounces of oil in the lines won't make any difference in the change anyways.

Pete S

The Hy-Tran looks like pork gravy.

My "thought" was to put a dummy coupler on the "down" side of the lift cylinders,..............so when the booms get raised the fouled oil would squirt out. THEN place the coupler back in place and allow the cyliner to collapse.

Did I say that right?

Pete

urednecku

Be REAL careful if you take an end off if it's under ANY pressure....I'm thinking even just the boom being up & you take the end off the 'down' side could make a mess, and hyd. fluid under pressure is nothing to play with. Not to mention the boom coming down rather quick?

Somebody should be by soon with more experience than me, tho.

chrpmaster

If you really want to get the old oil out you are on the right track. Be very careful of the high pressure lines though. This fluid will be under very high pressure (2000 - 3000 PSI).

You might try loosening a fitting near the top of the machine and one on the lower side and letting gravity do the work.

Have lots of towels handy too!

__________________
Stupidity is exasperating. Willful ignorance is bulletproof.

Having government manage your health care is like having Michael Vick watch your dog.

Democracy is 2 wolves and a lamb voting to see what they will have for lunch. Liberty is a well armed lamb contesting the outcome of the vote.