The International Cessna^® 170 Association

Need some direction. I lost a hubcap earlier this week and I think it was primarily due to a loose screw and a hard landing. What is the best way to repair one of the screw holes in Cleveland wheels where the threads appear to be worn out or stripped? Also anyone out there with an odd hubcap lying around you don't need or a set you would sell cheap?

I just last week was asked this and after looking in the Cleveland Technicians. Guide and the Cleveland Component Service Manual, I found no reference to repairing those holes. They do make Helicoils Kits for 10-32 and 8-32, or you could call 800-braking ( Cleveland Wheels Tech Line) They have been very helpful to me in the past.

Frank,
"Helicoil".

To repair with a helicoil you must drill oversize bigger than simply rethread to the next size screw.

I cut off the end of a zip tie and wedged it in the hole with the screw. Easier, but less elegant than a helicoil.

JB weld and retap

Depending upon what size screw was originally used...

First Choice: Sell or donate your hubcaps in TradeMart.

Second Choice: Install wheel fairings.

Third Choice: Drill and Tap to the next oversized screw. (If sufficient wheel material remains in screw "boss" area.)

Fourth Choice: Helicoil (Threaded Insert) and reinstall original sized screw.

Fifth Choice: JB Weld and re-tap.

Finally: When completed....Paint your wheels GREEN so they'll turn sufficiently slow as to avoid throwing hubcaps.

I had this same problem a while ago. The cleveland wheels have pretty shallow threaded holes which only go about 1/2 way through the rim. I de-aired the tired and drilled/tapped the hole deeper. I put in a longer screw that goes in just short of all the way. I never thought I was over-tightening these but apparently I did. Doesn't take much on aluminum. I've also had really good luck with MarineTex in other applications. It's like JB Weld but is stronger and is meant for filling and re-tapping holes.

Due to the conditions that I land (sand , marsh water , and fine red dust ) and not being able to find the right hub caps I made my own out of 32 thou sheet aluminium . The hub caps are flat and extend slightly over size of the hub to the point they just touch the tire . The edges are polished round . I do not get any contaminates in the outer bearing at all and now wish to work something out where the inner bearing has a better seal than the felt seal that's fitted . .

You can buy new aluminum ones, can't remember where I bought them but seems like it was Wag-Aero.

Joe

After flying for years without hubcaps I had a friend cut me two flat ones from a sheet of aluminum and I used them for more years. Then on year when I was having my annual done I mentioned hubcaps to my IA who told me he had a set of the ones like you can purchase in vrs places. I gave him $25.00 and all went well until last week when that one loose screw apparently helped by a not so nice landing caused the hubcap to depart from the wheel and I was told by the airport folks where that occurred that it was bent pretty bad. I still have one of the flat caps (don't know what has happened to the other one ). I did check Aircraft Spruce and I am not too eager to pay what they are asking for them. I will check Wag & a few others, but will likely just get another flat one made and be done with it. I did see flat ones on Craigslist for about $33.00, but I can make one for a lot less. Thanks for all the suggestions.

Checked Wag-Aero and their plastic caps (in last yrs catalog) were $7.50 ea---not bad for plastic. I was working on the plane today when my next door/hangar neighbor popped in and asked what I was doing. I explained and he went back to his hangar and returned with an almost new pair of aluminum hubcaps. He has fenders/panties on his single place, bi-wing homebuilt and said he will never use them. Wouldn't take anything for them. Said that is what neighbors are for Aren't airplane folks great Now I have to find a way to do something for him Just goes to prove that clean living provides its rewards Even a blind hog finds an acorn once in a while. Now to determine how to repair some screw holes

George, they are painted white, as my others were/are. Afraid to paint them green as they would spin so fast they both would probably sling off. I'd paint them red to cure that problem, but red doesn't blend with GREEN too well

As a follow up on the hubcap screw hole repairs, I just talked to a person at Parker Hannifin (Cleveland) regarding this issue. He said they do not have any "official" repair procedures for screw holes that may be stripped. He said they stay away from that issue ie: the lawyers have most likely advised them against issuing any repair data on those wheels due to potential product liability situations. His only caution was not to drill completely through the screw boss as that would weaken the wheel and render it to be scrapped. Based on the suggestions it sounds like some of that good ole Sulfur Springs, TX JB Weld and retapping.

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