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H-3 Final Drive Lube Recommendations
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orangeman View Drop Down
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Joined: 12 Sep 2009
Points: 1841 		Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Topic: H-3 Final Drive Lube Recommendations
    Posted: 02 Sep 2013 at 8:27pm
Guys:  Looking to freshen up the oil in the final drives.  I got the plugs free assuming they should be full up to the plug level. 

Anyone have a good recommendation for the lube for the final drives?

Appreciate any insights... Thank-you Orangeman
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Tracy Martin TN View Drop Down
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Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10728 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tracy Martin TN Quote  Post ReplyReply Direct Link To This Post Posted: 02 Sep 2013 at 10:28pm
I would use 80-90 wt gear oil. HTH Tracy Martin
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Coke-in-MN View Drop Down
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Joined: 12 Sep 2009
Location: Afton MN
Points: 41932 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Coke-in-MN Quote  Post ReplyReply Direct Link To This Post Posted: 02 Sep 2013 at 11:07pm
the 90# or 85/120  gear lube - If you never had the lower case open it might not be a bad idea to check IF any debris is settled into lower part of case. 
 
Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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orangeman View Drop Down
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Points: 1841 		Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Posted: 03 Sep 2013 at 4:02am
Guys: This machine is a 1961 and has the heavy cast final drive pans on it.  As always, thank -you for the excellent information.  Orangeman
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Old Yeller View Drop Down
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Joined: 16 Sep 2013
Location: NE Lower Mich
Points: 8 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Old Yeller Quote  Post ReplyReply Direct Link To This Post Posted: 16 Sep 2013 at 9:48pm
Orangeman, I am brand new to this forum but have done a little snooping around before joining and see that you have a lot of good posts regarding your 1961 H3 dozer.  I just recently purchased a similar dozer and haven't even been able to haul it home yet.  I have ZERO knowledge about dozers and do not consider myself a "mechanic" but I am looking forward to learning while I try to get a few small projects done.  I did find an Operators Manual (TM-268) that applies to the H3, and calls for SAE 20-20W oil in the final drives.  Since it looks like you might be going with the gear oil, I am wondering if the manual is wrong or why folks are recommending the gear oil.  What did you end up using and how is it working?
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Dozer View Drop Down
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Joined: 16 Aug 2011
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Points: 689 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dozer Quote  Post ReplyReply Direct Link To This Post Posted: 17 Sep 2013 at 7:26am
The owners manual for my HD6G says 50 wt motor oil in summer and 30 wt in winter. I have been using universal transmission/hydraulic oil. Most people on this forum use 90 wt or 85W140 GL5 oil. If your final drives leak I can understand that the heavier viscosity oil might leak out slower. I owned an HD7 where the previous owner used wheel bearing greese. That didn't work as I had to replace the final drive bearings.
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