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Harry Ferguson Tractors Discussion Forum
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TO 20 Oil Change

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Danny Critz

10-17-2006 11:02:28




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I got my TO 20 in May of this year.
While brush hogging, I realized the that the lift didn't operate as smoothly as it should.
When checking the dip stick level, the fluid was milky in consistency showing the presence of water as I was told by a friend.
I changed the hydraulic fluid this past weekend allowing the old fluid to drain over night.
I replaced it with NAPA GL-1. I put in 6 gallons and it only touched the bottom of the dip stick, even below the low mark.
Does it take 7 or 8 gallons??
After changing the hydraulic fluid, I decided to change the engine oil.
What a suprise!!!!
The filter is in the bottom of the oil pan,and someone had welded (brazed)the canister cover in place. It can't leak and you can't replace the filter.
I asked the previous owner if he had ever changed the oil. He said he had several times.
I ask how he changed the filter. He said he didn't, he just changed the oil frequently.
Is this an unusual case, or is it a common remedy for leaking cover plates.
I would appreciate anyone's ideas on what I should do.
The tractor runs fine now with no problems, I just don't want to have any if I can prevent it.
"If it ain't broke don't fix it,but I want to prevent it from breaking". Thanks, Danny

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Crem

10-17-2006 20:21:38




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 Re: TO 20 Oil Change in reply to Danny Critz, 10-17-2006 11:02:28  
I guess that I am also guilty of welding the oil filter cover on a TO-20. This was back in the late sixties. I arc welded it while it was right on the tractor. We were pretty rough on the Fergy back then and that plate was always leaking after being hit and the sealing surface bent various times by rocks etc. I know that was the wrong thing to do forty years ago, but maybe it prevented it from running out of oil. Anyway, I bought the tractor from my brother thirty years later and installed a rebuilt Z129 in it. That ended the filter problem. The old Z120 lasted all of those years with the help of several rebuilds. Dad had the help of six sons to keep that thing working out in the fields. Our other tractor was a SC and then a DC Case. It is fun to reminisce. :o))

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Jerry/MT

10-17-2006 11:32:51




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 Re: TO 20 Oil Change in reply to Danny Critz, 10-17-2006 11:02:28  
Sounds like the previous owner might have had an inovative way to solve a very simple problem. He had a leaky filter cover gasket so he brazed the filter cover in place! 6 gallons of GL-1 is the correct ammount of oil but it takes a while to equalize in the three sumps. Drive it around for a while and recheck it.If it still looks low on the dipstick, remove the lowest bolt on the right hand side access cover where the dipstick is located. If you have fluid coming out of the bottom of the bolt hole, you have the correct ammount. You may not have the right dipstick so either remark your dipstick with a cold chisel or a file, or buy the correct dipstick. The parts folks on this sight have them.
Don't know what to tell you about the brazed on filter cover. It's a partial flow filter so it's probably not that critical right now but eventually it will clog. I suppose you can drain the lube oil and use a "blue flame wrench' to melt the braze out.I would drop the pan and do this to keep from having a crankcase fire. Tthe tractor was designed to have the filter replaced. I think a lot of the Chinese made replacement part gaskets are probably not dimensioned properly and cause leaks to occur due to poor fit. (I recently had this problem when I went to a spin on adapter for my TO-30.) Brazing was this guys solution to the problem. A sheet of thick gasket material and a pair of scissors would have been a better solution,in my opinion.

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Danny Critz

10-17-2006 13:12:14




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 Re: TO 20 Oil Change in reply to Jerry/MT, 10-17-2006 11:32:51  
JerryMT,
Thanks for the information.
I don't think the previous owner brazed the cap on.
Its got an aged look about it.
If you send me your e-mail address, I'll send you a picture, otherwise I don't know how to attach a picture at this site.
But thanks for the information. Danny



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Jerry/MT

10-17-2006 19:18:38




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 Re: TO 20 Oil Change in reply to Danny Critz, 10-17-2006 13:12:14  
I don't need to see a photo, I get the picture (no pun intended). Well whoever did it shouldn't have in my opinion. What are you going to do?



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Danny Critz

10-18-2006 05:53:47




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 Re: TO 20 Oil Change in reply to Jerry/MT, 10-17-2006 19:18:38  
I don't know what I might want to do yet.
The reprocuction Ferguson Dealer Shop Manual refers to the replacement element for the TO 20 as Part No. TO-18662-2: the TO 30 uses Part No. TO-18662-A and not interchangeable because opposite direction of flow.
If the element is still available, I might put it back to original.
I run a machine shop here in Martinsville.
It would be some work involved, but it could be done. It looks like the oil pan is a casting.
Won't know until I get it off. Might try to find a used one depending on cost. Thanks, Danny

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Jerry/MT

10-18-2006 19:23:07




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 Re: TO 20 Oil Change in reply to Danny Critz, 10-18-2006 05:53:47  
The oil filters are easy to come by. As Jeff(OH) points out, NAPA carries them, the parts folks on this site carries them or you can do a web search and find any number of places to get them from. As I said, if it was me, I'd put the system right and you have a lot of options on how to do that. Since you run a machine shop, you can probably machine the old cover off and make a new one! If you can't remove the old cover plate without severely damaging it, you might be able to find a used cover plate at a tractor salvage yard or on ebay.

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Danny Critz

10-19-2006 04:05:16




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 Re: TO 20 Oil Change in reply to Jerry/MT, 10-18-2006 19:23:07  
Jerry,
Correcting will probably be a January or Februaury project.
I haven't scratched the paint off the weld yet to see if it is brazed or welded.
If brazed, I'll preheat and melt it off.If welded the hand grinder will be the approach. Thanks, Danny



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Jeff-oh

10-18-2006 06:00:41




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 Re: TO 20 Oil Change in reply to Danny Critz, 10-18-2006 05:53:47  
Used oil pans are available. The tractor parters on e-bay are always putting them up. (1 or so a month)

The Filter element is available at NAPA, his is a WIC filter.

Goes by WIC 1107 or NAPA Gold 1107. Same filter.

Jeff



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