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Author Topic: trans fluid in my hyd tank  (Read 2915 times)

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Offline graves logging

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trans fluid in my hyd tank
« on: November 22, 2012, 02:48:24 PM »
My 664 clark had trans fluid in the hyd tank. All was good till I hooked up a loader and trailer.I had smoke coming out around the valve bank. And sezed up 3 of the valves. Iam guessing I need to put in hyd oil. Cause it was hot as hell. And the trans fluid was thiner than water.  What do you guys think.

Offline tlandrum

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Re: trans fluid in my hyd tank
« Reply #1 on: November 22, 2012, 03:46:39 PM »
the hydraulic tank should have never had trans fluid in it. you really need to drain it out and put some good hydraulic oil in.
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Offline NWP

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Re: trans fluid in my hyd tank
« Reply #2 on: November 22, 2012, 08:34:18 PM »
My firewood processor runs trans fluid in the hydraulics with no problem.  I've got 4500 hours on it with no problems.  Have you used the loader and trailer on it before?  Maybe there is a compatibility issue with the hydraulic systems.  Maybe a restriction causing some of the heat?  Although, I've heard that trans fluid doesn't have the lubricating properties of hydro oil.  That's my 2 cents worth.  I'm sure there are people that are a lot more knowledgeable in hydraulics than me that will have some answers on this though.
1999 Blockbuster 2222, 1994 Duratech HD8, 1997 Duratech HD10, 2011 Case SV250, 2000 Case 1845C, 1990 Peterbilt 378 w/ Hood 7000 loader, 2001 Chevrolet, 2005 Chevrolet, several trailers, and Stihl saws.

Offline cutter88

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Re: trans fluid in my hyd tank
« Reply #3 on: November 22, 2012, 09:17:55 PM »
my 664 is a 1980.. it runs same oil in tranny and hyd dextron 3
Romans 10 vs 9 
650G lgp Deere , 640D deere, 644B deere loader, 247B cat, 4290 spit fire , home made fire wood processor, 2008 dodge diesel  and a bunch of huskys and jonsereds (IN MEMORY OF BARRY ROGERSON)

Offline cutter88

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Re: trans fluid in my hyd tank
« Reply #4 on: November 22, 2012, 09:19:25 PM »
but running that loader u should be runnen a heavier oil like 10 wieght or hydraulic 32
Romans 10 vs 9 
650G lgp Deere , 640D deere, 644B deere loader, 247B cat, 4290 spit fire , home made fire wood processor, 2008 dodge diesel  and a bunch of huskys and jonsereds (IN MEMORY OF BARRY ROGERSON)

Offline Cedar Savage

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Re: trans fluid in my hyd tank
« Reply #5 on: November 22, 2012, 09:26:49 PM »
The hydraulic system shouldn't have trans fluid in it, but little trans fluid in the hyd fluid won't hurt nothing. It sounds like there's a restriction somewhere in system causing heat. You may need to add a bigger tank, or a hyd cooler to make up for the extra heat the loader is making.. If the hydraulic system is connected with the transmission, it needs transfluid in it.
“They fried the fish with bacon and were astonished, for no fish had ever seemed so delicious before.”         Mark Twain

Offline Gary_C

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Re: trans fluid in my hyd tank
« Reply #6 on: November 23, 2012, 06:40:46 AM »
Transmission fluid is a type of hydraulic oil and is most likely not the reason for the high temperature or low viscosity in your hydraulic system. You need to look for something else that is wrong.
Never take life seriously. Nobody gets out alive anyway.

Offline snowstorm

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Re: trans fluid in my hyd tank
« Reply #7 on: November 23, 2012, 07:21:26 AM »
atf will not hurt a thing. if it stuck the spools then it got really hot. or the spools or valve body are pitted or rusted. i have seen this happen. was there a diverter valve for the trailer?

Offline graves logging

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Re: trans fluid in my hyd tank
« Reply #8 on: November 23, 2012, 07:31:09 AM »
There is no diverter. Iam going to rebuild the valves. A buddy of mine has the same setup only on a timberjack works fine.but he uses hyd oil not trans fluid.

Offline Al_Smith

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Re: trans fluid in my hyd tank
« Reply #9 on: November 23, 2012, 07:31:41 AM »
I wasn't there so I don't know .However the presence of red does not neccessarily indicate it was tranny fluid .Somebody might have dumped red dye diesel fuel in the tank espcially since it was reported thin as water .

FWIW a kerosine or diesel fuel flush on a gummed up hydraulic system is a trick old as the hills .They usualy thinned it about half ,ran it without a load then changed the oil .You're not supposed to use the system under pressure .

Offline snowstorm

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Re: trans fluid in my hyd tank
« Reply #10 on: November 23, 2012, 07:59:59 AM »
There is no diverter. Iam going to rebuild the valves. A buddy of mine has the same setup only on a timberjack works fine.but he uses hyd oil not trans fluid.
  we would need to see how this thing is plumbed. as far as i know that clark uses open center hyrda.if the trailer valve is closed that would be a problem. you cant just tee off say the blade valve on the skidder and run back to the trailer without a power beyond or a diverter

Offline barbender

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Re: trans fluid in my hyd tank
« Reply #11 on: November 23, 2012, 08:50:36 AM »
That's what I was wondering, Al- did someone put off road diesel in the hyd. tank?
Too many irons in the fire

Offline Al_Smith

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Re: trans fluid in my hyd tank
« Reply #12 on: November 23, 2012, 09:09:00 AM »
It might not have have been ag diesel .Standard oil at one time had a blend before they came out with that stuff that looks like K1 kerosine that had red dye about the color of tranny fluid .

Ag diesel has so much dye in it that it stains the tank and everything it touchs .Every so often some super snooper tax people sneak around at farm auctions and peek in peoples fuel caps for red dye .They try to catch farmers running ag diesel in their F-250's that was suppossed to go in the John-Deere .It takes for ever to get it washed off too in case anyone gets the bright idea .

Might not have been diesel at all ,that was just a hunch .

Offline barbender

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Re: trans fluid in my hyd tank
« Reply #13 on: November 23, 2012, 09:11:12 AM »
I've heard that before- just a bit can leave you red for a long time.
Too many irons in the fire

Offline Al_Smith

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Re: trans fluid in my hyd tank
« Reply #14 on: November 23, 2012, 09:18:25 AM »
 :D Red dye .I had done a lot of work at a local refinery during the 80's .I found a nice 30 gallon drum that was discarded in the one time Standard Oil dump site .Aha nice drum to store gas .

So not paying attention I liberated it and filled it full of gasoline .Oh Lawdy did I get a surprise .Stained the tractor  tank ,the lawn mower ,the funnel ,my hands ,blue jeans .Bad plan .

Offline Bobus2003

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Re: trans fluid in my hyd tank
« Reply #15 on: November 23, 2012, 01:33:34 PM »
Had a Forklift at work that a guy filled the Hyd tank with Fuel.. Took a bit of work to fix that mess, Lots of draining lines and cylinders.

I have ran hundreds of gallons of Dyed Fuel though my truck.. After about 2 tanks theirs no real visual indication. you'd need more than just looking at a sample in the plastic tube that the DOT uses.. I know, i was dipped once...lol

Although anymore.. off-road and on-road fuel arn't much diff in price.. So for the last few years i've been running on-road in all my equipment. This way if i do fuel my truck out of my bulk tank, Borrow from the skidder/dozer its legal

Offline Al_Smith

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Re: trans fluid in my hyd tank
« Reply #16 on: November 23, 2012, 02:07:01 PM »
Oh they like to make a big deal over next to nothing .Spend 10 million bucks to collect 5,000 in fines .

Offline graves logging

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Re: trans fluid in my hyd tank
« Reply #17 on: November 23, 2012, 03:17:47 PM »
Had a Forklift at work that a guy filled the Hyd tank with Fuel.. Took a bit of work to fix that mess, Lots of draining lines and cylinders.

I have ran hundreds of gallons of Dyed Fuel though my truck.. After about 2 tanks theirs no real visual indication. you'd need more than just looking at a sample in the plastic tube that the DOT uses.. I know, i was dipped once...lol

Although anymore.. off-road and on-road fuel arn't much diff in price.. So for the last few years i've been running on-road in all my equipment. This way if i do fuel my truck out of my bulk tank, Borrow from the skidder/dozer its legal
crazyist thing I had in a hyd tank is a big rag the guy putting the pump on never looked in the inlet side of the hose. This was on a 860 tigercat. Let me tell ya that will slow things down. The rag was as big as a pillowcase. Filled valvebank and everything else full of rag we were days getting it cleaned out

Offline Ed_K

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Re: trans fluid in my hyd tank
« Reply #18 on: November 23, 2012, 04:17:55 PM »
I'm wondering if the inlet - outlet lines to the trailer are reversed?My Tractor didn't like it when I hooked mine up wrong the first time.
Ed K

Offline cutter88

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Re: trans fluid in my hyd tank
« Reply #19 on: November 23, 2012, 06:08:52 PM »
those two guys are right that tranny oil is just fine in ur hydraulic... ide say its a heat issue running the loader mabie a cooler will help
Romans 10 vs 9 
650G lgp Deere , 640D deere, 644B deere loader, 247B cat, 4290 spit fire , home made fire wood processor, 2008 dodge diesel  and a bunch of huskys and jonsereds (IN MEMORY OF BARRY ROGERSON)


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