The Cessna 120-140 Association Forum

OK, I’m stupid, I can’t find the O-ring size for the Goodyear vertical master cylinder that we most all have, I thought i might be in the Ref manual but if it is I can’t find it.
Would someone please tell me what it is.
But on that thread, O-rings are so inexpensive, but shipping isn’t, so maybe a list of any O-rings there are would be appreciated, that way I could make an order and hopefully have al the O-rings there may be.

My whole life i have always been where small parts like this were on hand, now that I’m on my own, this nickel and dime stuff is driving me nuts.

AN6227-7, which crosses to MS28775-012, item 21-10 in the IPC.

Any reasonably well stocked maintenance facility should have one.

I was unaware of an IPC for our old aircraft, I’ll order one from spruce unless there is a better source

Main website->Resources->Documents you'll find a .pdf for the IPC