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transmission and differential oil for WD

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Don(MI) View Drop Down
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Joined: 15 Sep 2009
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Don(MI) Quote  Post ReplyReply Direct Link To This Post Topic: transmission and differential oil for WD
    Posted: 28 Oct 2010 at 7:17pm
Just checking in again with some questions...
I have found 3 drain plugs underneath of the WD from the tranny to the differential. 2 around the PTO, and 1 in the back under the bull gear. Is this all there is for plugs other than the final drives?
 
How much oil will this take? Book says 17 quarts with 1 more quart for the PTO.
There are 2 filler pipes for the oil going in, one with the dipstick and one with a square ended plug. What goes where? What weight oil does everyone normally run?
 
Sorry for all the questions, just want to get this right the first time. Thanks!
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TomMN View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote TomMN Quote  Post ReplyReply Direct Link To This Post Posted: 28 Oct 2010 at 8:17pm
Here is a picture of a WD45, I think the WD would have the same fill holes but I don't know that for sure.  You can see there are three fill holes.  The one in front is the one with a dipstick, that is for the hydraulic system.  The other two both fill the rearend and transmission.


The rear one in this picture is missing the plug.  The whole works can be filled with HyTran universal tractor fluid, so that makes it easier.

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Bill_MN View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bill_MN Quote  Post ReplyReply Direct Link To This Post Posted: 30 Oct 2010 at 10:40pm

I replaced every drop of fluid in my WD this past summer. Bought a 5 gallon pail of universal trans-hyd fluid and used all but about 2 qts. There are just three drain plugs, the one by the PTO on the housing and the one on the bottom of the PTO drop box drain the front part by the hand clutch. The one under the rear end only drains the differential and rear portion of the tranny. Be sure to open all three plugs to get all the old stuff out. I found it easier to remove the battery box and access cover over the hand clutch, you can just dump it in and it will flow to all parts of the tranny and rear end at once, and it's easier to see whats going on. It takes some time for the level to equalize as it flows through. Remove both fill plugs and fill until fluid runs out fill plugs. Final drive pans need to come off, there will likely be thick sludge in the bottom that needs to be wiped, (scraped, scooped) out, then fill to plug level. As far as hydraulics, use same fluid as tranny, check level with lift arms up. Finals I used 85W-140 gear lube.



Edited by Bill_MN - 30 Oct 2010 at 10:49pm
1951 WD #78283
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