A simple oil change.....Negative

/ A simple oil change.....Negative #1  

MotorSeven

Elite Member
Joined
Aug 17, 2005
Messages
4,270
Location
NE TENN (Hancock Co)
Tractor
Kioti DK40SE Hydro
I had everything ready, so I figured on about 30min. Warmed it up, slid a drain pan under then removed the drivers side drain plug. When I removed the off plug, it had a lot of resistance to it:scratchchin:. No metal came off on the threads so I pulled the old filter, spun on a new one then replaced the plugs. Yep, the off one was stripped:jaded:. Now I know what y'all are thinking, that I went Gorilla on them, but i know better and only "snug 'em".

So I had to run into town and get a self tapping over sized-plug. It was impossible to start by hand, so I used the air ratchet to get it going, then finished by hand. The new plug has a smaller removable piggyback bolt inside of it so I don't ever have to take the self tapping part out of the pan(good). But, the second bolt hangs down a lot further than a stock one..about an inch(bad)....so I really need to think about making that belly up pan this winter.

I'm really wonder why a aluminium oil pan is used by Kioti(and others). Steel would probably be cheaper and a lot tougher. At the very least the aluminium one should have a steel insert for the drain plug...jmho.
 
/ A simple oil change.....Negative #3  
and more expensive when they sell you a replacement for the one that strips out.. ;)
 
/ A simple oil change.....Negative #4  
Steel would probably be cheaper and a lot tougher. At the very least the aluminium one should have a steel insert for the drain plug...jmho.

It will get worse.
Many cars today use plastic oil pans. I imagaine they will work down to farm equipment before too long.
 
/ A simple oil change.....Negative #5  
yep.. i see composite oil pans in yard equipment applications already...
 
/ A simple oil change.....Negative #6  
I had everything ready, so I figured on about 30min. Warmed it up, slid a drain pan under then removed the drivers side drain plug. When I removed the off plug, it had a lot of resistance to it:scratchchin:. No metal came off on the threads so I pulled the old filter, spun on a new one then replaced the plugs. Yep, the off one was stripped:jaded:. Now I know what y'all are thinking, that I went Gorilla on them, but i know better and only "snug 'em".

So I had to run into town and get a self tapping over sized-plug. It was impossible to start by hand, so I used the air ratchet to get it going, then finished by hand. The new plug has a smaller removable piggyback bolt inside of it so I don't ever have to take the self tapping part out of the pan(good). But, the second bolt hangs down a lot further than a stock one..about an inch(bad)....so I really need to think about making that belly up pan this winter.

I'm really wonder why a aluminium oil pan is used by Kioti(and others). Steel would probably be cheaper and a lot tougher. At the very least the aluminium one should have a steel insert for the drain plug...jmho.
I agree same thing happened on my 2008 DK 40se.PI$$ poor design IMHO.coobie
 
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/ A simple oil change.....Negative #7  
It will get worse.
Many cars today use plastic oil pans. I imagaine they will work down to farm equipment before too long.

They would probably hold up about as good as my cracked hood and fenders on my JD :mad:
 
/ A simple oil change.....Negative #9  
imho.. bad idea.... same as plastic sheet metal.. :(
 
/ A simple oil change.....Negative #10  
Why wouldnt a little anti seize compound take care of this
 
/ A simple oil change.....Negative
  • Thread Starter
#11  
Why wouldnt a little anti seize compound take care of this

Are you saying to use it before the threads striped? I doubt that would help, since the plug is always threaded in while oil residue is running out. I think the alloy is just a little too soft...need to be tweaked.
 
/ A simple oil change.....Negative #12  
seems like a very strange failure mode. there is little torque and no stress on a drain bolt. i have seen similar problems on engines with aluminum blocks and heads but the fasteners in those applications had high torque. Anti seize was a must on them.
 
/ A simple oil change.....Negative #13  
sounds liek a design issue... needing torque to seal vs providing for a good gasket or oring seal and low torque.
 
/ A simple oil change.....Negative
  • Thread Starter
#15  
What is an "off" plug? I'm not familiar with that term.

That's the plug on the other side of you. I guess I get that from horse teams...near horse and off horse, or if your mounting it's near side and off side.:horse:
 
/ A simple oil change.....Negative #16  
you kinda have to be an equine person to get that.

kinda like gee and haw.. :)
 
/ A simple oil change.....Negative #17  
/ A simple oil change.....Negative #18  
OK Ford diesel guys.. if you are cringing at the idea of a plastic pan on a 20K dollar tractor... you will REALLY cringe at the idea of a 6.7L Ford Diesel having a plastic oil pan and valve covers!!.. And yes, mine is leaking... has been for the past 20K miles... Dealer keeps working on it...
Aluminum oil pans are great.... As long as the threads are cut right. it also needs to be built up thick where the threads are... not paper thin. If at all possible, install a Fumoto valve or simple ball valve so that once installed, you wont be unscrewing it anymore.
 
/ A simple oil change.....Negative #19  
I know it's not likely but is there any chance you cross threaded it when you put it in last time? Or do you think the heat "siezed" it in place?

Re plastic oil pans, I never knew that. Aye carumba.
 
/ A simple oil change.....Negative #20  
PoorMansCat said:
OK Ford diesel guys.. if you are cringing at the idea of a plastic pan on a 20K dollar tractor... you will REALLY cringe at the idea of a 6.7L Ford Diesel having a plastic oil pan and valve covers!!.. And yes, mine is leaking... has been for the past 20K miles... Dealer keeps working on it...
Aluminum oil pans are great.... As long as the threads are cut right. it also needs to be built up thick where the threads are... not paper thin. If at all possible, install a Fumoto valve or simple ball valve so that once installed, you wont be unscrewing it anymore.

The 6.7 doesn't have a traditional thread in drain plug. It's a plastic drain plug , with an oring, that goes in and turns 90 degrees. That is the only plastic engine oil pan I can think of. Ford has gone to plastic on some of their transmission pans also.

Chuck
 

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