hey, anyone know what size hex socket this is?

thanks guys

mike

 

Bob knows.
10mm

Here is a link to his write up.
Welcome to guzzle's Transfer Case Fluid Change Web Page

EDIT: since we are on the subject. I used an oil pump to refill the transfer case because it was quite difficult to fill with the bottle. I used a gear oil pump designed for a Mercruiser out drive. You can probably pick these up at your local boat supply store. It worked ok but I had to keep refilling the bottle because the pickup shaft wasn't as long as I'd like.
http://www.ebay.com/itm/Outdrive-Low...s_Gear&vxp=mtr

Next time I do this, I'll probably fashion up something different. My home improvement store has little pressurized jugs in the garden center. The larger ones are designed for insecticide or weed control but they have smaller hand held ones also. I'd probably try using one of the smaller jugs and see how that works. I bet it would work well.
http://www.homedepot.com/buy/outdoor...ayer-7667.html

 

thanks greg! even better than that sprayer would be a suction pump

http://www.princessauto.com/all-seas...-transfer-pump

well just with the one hose to suck it up then push it back

 

Sounds good. Looks like that would work too.

I always loosen the fill plug first anyway just to make sure I can fill the thing back up.