My Willys 3A and 3B Community

3A, 3B, DJ Technical Knowledge Base => "Original"-- Technical Questions, Answers, Observations => Topic started by: bayo500 on March 06, 2011, 07:21:26 AM

Title: Transfer case and gear box oil levels ?
Post by: bayo500 on March 06, 2011, 07:21:26 AM

I don't know if i've got this right.
If i fill the gear box it will slowly fill the transfer box via a hole.
So if i put oil in (L/h g box filler plug) i should wait and top it up?
Did the early boxes not drain that's why the transfer box has a fill plug ?
I'm sure i read somewhere that the early boxes used a seal in between
but they did away with it, am i on the right track ?
I guess my question is - Whats the fill procedure...

Title: Re: Transfer case and gear box oil levels ?
Post by: Bob W on March 06, 2011, 07:37:35 AM

Early jeeps did have a seal between the transmission and transfer case but CJ-3As do not. Here is a web-page that explains this....
http://www.cj3a.info/tech/fluid.html
The transfer case will fill VERY slowly when adding fluid through the transmission. Be sure to check the level in each gearbox and do not assume they are full.

Title: Re: Transfer case and gear box oil levels ?
Post by: bayo500 on March 08, 2011, 03:26:35 AM

I decided to put a speedi sleeve on the output flange and emptied the T Case and Trans, took the shifter out and poured in 3.7 litres of
gear oil, now no leak and confident of levels, bit rough but it worked...