Feedback Score: 1 reviews
Join Date: Nov 2009
Location: s fl
Re: Transmission fill check plug size
Well, none of the sizes are out of the ordinary.
What one should be aware of, is there are 2 sections of the gearbox/transfer case assembly that have separate sumps.
Front transfer case has 1 drain, 1 fill, AND 1 Level check plug. Thats 3 plugs that have to come out on the front of the trans.
The fill plugs are all big 3/8" drive square plugs. All drain plugs are iirr 12mm(maybe 13mm)socket heads. The 1 separate level check is also a socket head plug, like the drain plugs, iirr.
The gear case has only 1 drain and 1 combination fill/ level check plug.No separate level check plug like the transfer case.
Front diff has a large Allen plug on it. Don't remember exactly if it was 7 or 8 mm, but it was bigger than the 6mm engine drain.