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WD-45 Drain and Fill Plugs for gear oil.

D

Duane Becker

Member
I have a fairly nice 1955 wd 45, and I want to change the gear oil. I'm not too mechanical but I love the ole allis. I want to make sure I id all the drain and fill plugs so that nothing is missed.

As I understand it, the same gear oil is used for the tranny and rear end. I have found two square head drain plugs. One at the tranny and the other right at the back axle in the middle. Are there any more drain plugs beside these two?

For the fill plugs, I found two on the left side of the tractor just below the battery box, and near the hydraulic fill plug. Also isnt there a 3rd gear oil fill plug in back of the rear end, its in view, just below the seat, and looks like a maybe one inch threaded cap on it. My mechanic told me about this 3rd fill plug, but I want to make sure. Thanks Duane
 
Third drain plug at bottom of PTO gear housing.

"....just below the seat, and looks like a maybe one inch threaded cap on it." The only thing I can think off that would look like that is the remote hydraulic line is capped. Is it bolted with a bracket? Beneath the seat and to the left.
Directley under the set it a square heade bolt with about a one inch jam nut screwed into the axle housing. That is brake adjustment. One like it to the left side as well. I can see one might think that was a drain plug if not familiar with the tractor
No fill plug back there on mine
 
I've added a pic of the capped plug that I'm referring to on the rear just below the seat. I know where the brake adjustment bolts are. Maybe this was a filler that was added later, but it sure looks like a factory thing to me. I've taken the cap off and with a flashlight pointed down the hole, I can see the gears.
 
Here's the pic...
a40872.jpg
 
I think that is an add on, have not seen that before. Online parts book does not show that.
 
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