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zanepetty

transmission flush?

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zanepetty

Should I flush my transmission with diesel fuel or is there really a need?

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boovuc

You can flush a 4 or 8 speed out with kerosene and a very light drive around the driveway. IMO, I would really only do this if you had water or debris that may have contaminated your tranney. If your just changing gear oil due to age, I wouldn't worry about a flush.

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zanepetty

When I drained my new to me 753 the oil did look a little chocolate milkish but it was still thick..and mine is a 3 speed.

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boovuc

Sorry Zane..............3 speed + reverse.  :)

If it had a milkish appearance, I would flush it with kerosene and then really make sure you get it drained. (This is the real sign of water in the transmission case).

I flushed a 5+ year sitting C-120-8 speed because of the milky white emulsion like consistency of the drained gear oil. I dropped 2 pints in it, ran it a very short distance then drained. A lot of crude came out so I did it again. The second flushed kerosene was much cleaner. I let the tractor drain open 24 hours then plugged it back up and refilled with gear oil.

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zanepetty

Sorry Haha I'm a dumbie. It wasn't bad bad but I guess it wouldnt hurt. So I should fill it full then ride it around the yard then drain and repeat?

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stevasaurus

You are not going to hurt it to flush it out.  Weather you use kerosene or diesel...they work the same...it is a matter of price.  You do not need to fill it if everything is in working order...just about 2 qts.  :)  There is plenty of threads on this if you do a search.

Edited by stevasaurus

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zanepetty

So put two qts in and ride around then repeat? And how long do I leave it empty to dry out before I put oil back in it?

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stevasaurus

Only repeat if the fluid coming out is still dirty.  You can put the right oil in it right after you drain out the flush...no need to wait. :)

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zanepetty

Okay. I thought someone said to leave the plugs out for a day before refilling or something like that. My bad. Will it help the tractor to flush like that? I mean like if its dirty in there will it hurt it? I'm not sure if it is. Sorry if that's dumb question haha

Edited by zanepetty

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chazm

OK , as stated above... if its milky colored - flush it & add new gear lube & down the road you go ( your preference... to flush once or twice... or leave the plug out for as long as you think all the flush is out... 10 min , 1/2hr or days)

If the lube is just black/dirty ... ( which it will be, unless you changed it last week ) add new gear lube & down the road  :handgestures-thumbupright:

The above process is routine maintenance  & won't hurt it ....     :handgestures-thumbupright:   :handgestures-thumbupright:

 

 

chasm  :flags-waveusa:

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zanepetty

OK. Awesome. Thanks a lot. I'll do that tomorrow. Just go through all the gears?or doesn't matter?

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stevasaurus

Go through all the gears...especially 3rd and reverse. :)

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zanepetty

Thanks a lot Steve. I'm going to try to get it done today. And also try to get my headlights on. If I do I'll post some pics!

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zanepetty

I found the problem! The pulley definitely does stop turning when the clutch is pushed in!!!

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chazm

OK... not sure what this has to do with flushing your trans. What did the old oil look like when you drain it ???

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Hodge71

I thought it needed to be flushed? I'm lost as to what happened that you needed to flush a transmission, but now pulleys stop when the clutch is pushed in. The transmission input pulley should stop when the clutch is pressed. If it didn't stop, you'd never get it into any gear. 

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zanepetty

I'm sorry guys that was my bad I put that in the wrong thread. But the oil looked black the second time I drained it out.

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stevasaurus

Unless your new oil is black, I would flush it again...any filings, or bits of metal?? :)

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zanepetty

I didn't see any. But I didn't strain it..

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