Transmission/transfer case- How much gear oil?

Raider2532 · Post by **Raider2532** » Tue Dec 13, 2011 8:00 am

I am putting new gaskets and seals in my M38A1 Transmission/transfer case. The manual calls for 1quart in the transmission and a quart and a half in the transfer case. This doesnt seem to be enough. Is this the correct amount? Or should I fill it up to the check plug on the side of each? thanks

Post by **wesk** » Tue Dec 13, 2011 8:51 am

That's the correct amount. Do not check at the plug level until you have it mounted in the jeep setting at it's normal operating angles/position.

Raider2532 · Post by **Raider2532** » Tue Dec 13, 2011 9:45 am

Thanks, that just doesnt seem like its enough. I guess if you overfill it it will it will probably leak.

Post by **wesk** » Tue Dec 13, 2011 9:51 am

Overfilling causes excessive foaming of the oil, turning friction for the gears and as you suggest leaks.

Bretto · Post by **Bretto** » Tue Dec 13, 2011 10:43 am

I filled mine, after it was installed in the frame, to the fill plug levels on level ground. Is this not correct? Mine is still just a driving chassis so it hasn't been ran other than down the street and back.

Post by **wesk** » Tue Dec 13, 2011 12:43 pm

I think that is what I said.

oilleaker1 · Post by **oilleaker1** » Tue Dec 13, 2011 1:46 pm

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