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Gear reducer

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Martin Davidson

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About gear reducers I want to change the oil on mine and I don’t see a drain hole. At first I thought it drained with the trans diff combo but I pulled the large plug on the middle right side on the gear reducer and I can see oil just below the hole. The manual says nothing about it. Thanks in advance Digger
 

kmcconaughey

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Martin, the UD6 Creeper/underdrive, for the Original has a drain plug at the bottom, and a level plug on the side. It uses SAE-140.

Original_Creeper_05a.jpg


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Original_Creeper_06a.jpg
 

Martin Davidson

Active member
Joined
Jul 13, 2021
Messages
26
Location
Thousand Oaks CA
Martin, the UD6 Creeper/underdrive, for the Original has a drain plug at the bottom, and a level plug on the side. It uses SAE-140.

View attachment 145584

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View attachment 145585
I am sorry I meant the factory gear reduction box in front of the trans/diff. Unless I missed it I didn’t see a drain hole on the bottom.
Thanks
 

kmcconaughey

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The transmission drain should also (mostly) drain the reduction drive. The fill level for the transmission is that plug on the right hand side.

From the Operator's Manual:

OriginalManual17a.jpg


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OriginalManual18a.jpg


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From the Chassis Service Manual:

Page 20a.jpg


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Note that there are no seals on the bearings on the "Transmission input shaft" and "Transmission countershaft" between the reduction housing and the transmission.

Page 23a.jpg
 
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