Is there some type of equipment, or kit, I should buy for cleaning it?
For a corny, you should get a brush that fits down the long dip tube. If needed, everything else can be reached with a toilet brush or by disassembling the keg. But a good soak with PBW should take care of pretty much everything. If it is a used keg, save yourself the trouble and get a new set of o-rings and replace them right off (if it doesn’t come with them already).
If you get more than one keg you might want to invest in a cleaning rig, but you don’t really need it.
+1
Especially on the o-ring replacement because sometimes no matter how much you soak these they will hold odor.
Yep you need to specify! Cornies are easy but I see something like a commercial keg- even an 1/6 bbl very hard to keep clean without specialized equipment.
The right size deep-well socket or box wrench will help take the keg posts off for cleaning. I don’t remember the size, but it is not one that I had on hand. My adjustable wrench was too fat to be much use in the tight space between the handles.
I have kegs with 11/16 and 7/8 inch sizes. Some of the 7/8 are 12 point. Deep well is what you need for both.
If you have more than one keg, I recommend only doing one at a time. Some of the threads can be differnent, and some lids will leak if not matched with the right keg (my experience).
Deep well sockets are for suckers. ;) Get yourself one of these - one wrench for all of your cornies.
Not if you already have a tool box with 3/8 and 1/2 drive deep wells.
I was going to add that why just buy one? Really, IMO at a minimum one needs two.
And standard wrenches have worked fine for me. Adjustable won’t work in most cases. Usually posts are sticky so the first time removing one it is best to lay the keg on it’s side and sit straddling it. Place the wrench and give it a firm whack with the palm of the right hand. Keep the other hand on the top of the keg otherwise if it rolls you may get your fingers smushed.
i find humor in everything 8)
Damn. I just got a big laugh too! :o
Yes, even then ;D You need to pull that stuff out and swap sockets as needed, mine hangs on a hook and I can flip it around as needed as I go from keg to keg. After using one for a while it became something I insist on having. Now I have two at home and one at the side job (soda in cornies).
A new, un-used toilet brush dedicated to cleaning kegs and nothing else. This is important.
Yeah, maybe the “new, un-used” part doesn’t go without saying. I mean, it does for most of us, but you never know . . . ;D :o
It should go without saying… I guess I now know how to make a beer that tastes like ass.
That would assume I only have one drive in each size. 
What’s that swap sockets stuff?
Not so fast my friend! Euge said he uses a paint stirrer for paint and wort. So I’m thinking if I just soak the brush in StarSan then …
P.S. glad things are looking up for you Euge.
I have to admit this is true.
;D
I can still hang mine on a hook. ;) AND, the 7/8 one fits the fitting on my burner so I can use it to hook up the propane tanks. Of course I can’t get the wrench off until I am done with the burner, but then I don’t clean kegs on brew days so it doesn’t matter.
You might actually be able to sufficiently clean and sanitize one so there would be nothing transferred. But the ick factor . . . there’s no cleaning that off.
And… a toilet brush has a much more complex surface than a paint stirrer. Think a scratched up plastic bucket is hard to sanitize? Way more nooks and crannies here!
And the solvents probably keep paint sanitized.