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Leaking final drive on HD16DC

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jerbob View Drop Down
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Joined: 07 Aug 2017
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jerbob Quote  Post ReplyReply Direct Link To This Post Posted: 18 Feb 2019 at 11:51am
Originally posted by CAL(KS) CAL(KS) wrote:

1.  Yes 
2.  Yes  (forward)
3.  Yes


Thank you Cal.
HD16DC, Bobcat 863 Turbo, Oliver 1855, John Deere 855,
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jerbob View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jerbob Quote  Post ReplyReply Direct Link To This Post Posted: 18 Feb 2019 at 12:03pm
Thank you HD.
I have been using 80/90 weight gear oil and put in 5 Gallons after I drained out housing per my original manual. This took the fluid level up to almost the top of the fill plug. Level was down around an inch or two from the top of the fill opening.

It leaked down to under the hole in the case. I added roughly 1/2” gallon out of a new jug of 80w145 gear oil and this took level up to over the opening in the bottom of the final drive housing and will monitor it for a few days. I have heard that Lucas oil treatment and or STP has been used successfully for minor seal leaks.

Will try this course of action and let y’all know . I really appreciate the responses and suggestions. Cal, Ian and HD, thank you.
HD16DC, Bobcat 863 Turbo, Oliver 1855, John Deere 855,
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Ian Beale View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ian Beale Quote  Post ReplyReply Direct Link To This Post Posted: 18 Feb 2019 at 4:18pm
Different dozer, similar problem area

I got a piece of high tensile fence wire caught in the sprocket seal of our FA 10.  They use face seals.

A neighbour suggested seeing if I could work the piece out.  By taking a track plate off I could get a sheet metal finger hook into the area and managed to do that.

Those face seals must be tough - I ended up with a very minor leak.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jerbob Quote  Post ReplyReply Direct Link To This Post Posted: 19 Feb 2019 at 7:00am
It’s funny Ian that sitting the final drive in question starts and stops on its own. I’m thinking the cold might play a factor. It’s been very cold here in single digits. When it gets above 30 I will look to see if the oil leak starts again due to viscosity. The more I dig into different aspects of my 16, I see past abuse that I had not noticed before. Mostly dents and metal parts with breaks and obvious rough use. Sprocket covers bent and a couple with cracks, fenders with dents and waves, 3 broken grousers. Seems like it was in the bolders or tree stumps in its past.
HD16DC, Bobcat 863 Turbo, Oliver 1855, John Deere 855,
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Ian Beale View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ian Beale Quote  Post ReplyReply Direct Link To This Post Posted: 19 Feb 2019 at 4:53pm
You might have one of those final drive leaks that stops when you work out just where the sprocket has to stop when you park it
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jerbob Quote  Post ReplyReply Direct Link To This Post Posted: 19 Feb 2019 at 5:54pm
Originally posted by Ian Beale Ian Beale wrote:

You might have one of those final drive leaks that stops when you work out just where the sprocket has to stop when you park it


I was wondering about that Ian. Wondered if there was a weak spot and not an entire seal failure.

Good one Ian.
HD16DC, Bobcat 863 Turbo, Oliver 1855, John Deere 855,
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