JD A adding oil to first reduction gear cover

pmarkel · Feb 6, 2019

I am thinking of driving my 48 A back to the home farm today but I wanted to change the oil in the first reduction gear cover first. When I bought the tractor the crankcase was about 4 gallons full with gas and oil from a leaking Needle and seat in the carb. I changed the engine oil but neglected to change the cover oil and I concerned about driving 10 miles if I have thinned down oil in the cover. I noticed the cover has a drain plug but no fill. My question is can I snake a small hose back beyond the dam in the cover and fill it that way? Thanks,

Pete

RLA · Feb 6, 2019

I'm think the two shifter type A's had a drain hole back into the crank case?

Mike M · Feb 6, 2019

Wonder if someone put their own drain in ? as I thought most that were done at factory were later and also had a fill plug on top ? But if you remove the operating fork assy. from the front you should be able to add oil in over the damn with a funnel with a hose extension. I forget what the book says to add ? A qt or half a qt ? Anytime I have a reduction cover removed I drill and tap drain and fill holes if not already equipped.

Mike(NEOhio) · Feb 6, 2019

The 1/8 pipe plug is to drain it. Fill it at the plug on top of the housing. On later A's the reduction gear was not connected to the crankcase or transmission. I think it takes a pint of engine oil but check the manual. You can see the gear thru the fill plug

Mike(NEOhio) · Feb 6, 2019

P.S. Crankcase should be nice and clean with all that gas soaking it.

Lee B · Feb 6, 2019

You don't really have to worry much about filling that oil as it is oiled by the right main bearing sling off all the time anyway. Oil is returned to the engine by riding up the first reduction gear when you have the clutch engaged. So for a couple minutes there you won't have that return oil until it can sling out that quart that pretty much stays in there. Not much of a hardship, but you can sure try your deal too.

pmarkel · Feb 6, 2019

thanks all for the advice, I cracked the plug open a little and let the water and some sludge run out and the oil that followed it seemed a nice amber color so I put the plug back and let well alone. Drove it home this afternoon and began working on the rockshaft.

JD A adding oil to first reduction gear cover

pmarkel

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RLA

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Mike M

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Mike(NEOhio)

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Mike(NEOhio)

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Lee B

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pmarkel

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