D2 5U Sump Plug Hex Size?

Hi all. Could someone kindly remind me what size hex drive is required to undo the sump plug on a 5U D2. My 'dozer is parked in the middle of no-where at the moment, so want to make sure I have the right tools for an oil change, before I head out there. Thank you.

ccjersey wrote,
"A 7/8" bolt usually has a 1-5/16 head which can be ground down to fit the CAT socket head plugs. Check before grinding, you might have a 1-1/4' head bolt already. If you have to go buy one, there are metric bolts with 32mm heads which fit perfectly.

Then thread a nut on the other end and weld it solid. Then you use a socket with extensions as needed to reach up through the belly pan. The most useful length is a very short bolt that will fit in your socket and stick out just enough to go completely to the bottom of the socket in the plug. Only problem with these adapters is they are easy to misplace due to the small size. If you find a plug that is stubborn, you can use a 3/4" drive socket to break it loose.

I also make a hand wrench with about a 7-8" bolt welded to one end of a 16" or so bar to make an L. On the other end I weld a 2" long bolt for the steering booster fill plug under the fuel tank of the D69U tractor. The long end will reach up through the belly pan opening of our tractor to take out the plug in the engine oil pan. Much easier to keep up with that one, but there's places it won't reach that a ratchet will!"

This should fit your tractor too!

I was hesitant to repeat that since I haven't actually got a D311 to check the size of the plug. Only thing that makes me wonder if that is correct is I have a wrench I made that has a 15/16" head on it. Been so long since I made it, I can't remember what it fit or if it was simply a mistake. I did have a 212 grader here a few years ago and have a couple of D3400 engines out back that I could have made that for..........just can't remember.

I used the SEARCH function to find a 2011 Thread with DEAS reply in which he stated the same dimensions.
I feel pretty confidant that the HEX is the same size.

CcJersey,

That home made 15/16" wrench should fit the a drain plug on the grader, I can't remember exactly which one. I was in the process of changing engine and transmission oils at the time so it was somewhere in that area. .flywheel housing drain plug maybe?

I've built a number of various special tools for working on these old critters and paint 'em Cat yellow. One drawer in my tool box has been set aside specially for 'em.

like drunjin said: a metric bolt (32mm) with 2 nuts on the end is my special tool in my cat toolbox.