mooneyflyfast Posted July 13, 2022 Report Posted July 13, 2022 My 40-87 Cleveland nose wheel was found to have corrosion pitting in the area shown in the picture. Main wheels were fine. There are plenty of used ones out there but they all seem to be as bad or worse than mine.
Fly Boomer Posted July 13, 2022 Report Posted July 13, 2022 5 minutes ago, bluehighwayflyer said: I had to replace the outer half of both of my previous M20J’s main wheels; also due to corrosion Any way to protect these?
jetdriven Posted July 13, 2022 Report Posted July 13, 2022 Paint them. Clean off. Scrub with prekote. Bake to drive out moisture. Then epoxy DTM primer and urethane 2k single stage paint. 1 1
EricJ Posted July 13, 2022 Report Posted July 13, 2022 44 minutes ago, mooneyflyfast said: My 40-87 Cleveland nose wheel was found to have corrosion pitting in the area shown in the picture. Main wheels were fine. There are plenty of used ones out there but they all seem to be as bad or worse than mine. The bearing cups/cones don't look bad, and that's where the load stress is. The area of concern just helps hold the grease felt and the retaining washers and clip. I can't find any rejection criterion guidance from Cleveland or Mooney or in AC 43-13 other than for cracks, etc. That's probably why they all look that way. 1
mooneyflyfast Posted July 13, 2022 Author Report Posted July 13, 2022 27 minutes ago, EricJ said: The bearing cups/cones don't look bad, and that's where the load stress is. The area of concern just helps hold the grease felt and the retaining washers and clip. I can't find any rejection criterion guidance from Cleveland or Mooney or in AC 43-13 other than for cracks, etc. That's probably why they all look that way. This is what the maintence manual says. I dont think by any stretch this could be called small pits and they definitely couldn’t be pilished out with fine sandpaper.
EricJ Posted July 13, 2022 Report Posted July 13, 2022 10 minutes ago, mooneyflyfast said: This is what the maintence manual says. I dont think by any stretch this could be called small pits and they definitely couldn’t be pilished out with fine sandpaper. Exactly, there's no specific guidance on what "excessive corrosion" is, so as usual, there's discretion for the maintainer. 1
Shadrach Posted July 13, 2022 Report Posted July 13, 2022 6 minutes ago, mooneyflyfast said: This is what the maintence manual says. I dont think by any stretch this could be called small pits and they definitely couldn’t be pilished out with fine sandpaper. True, but it's in a non structural section of the wheel. Unless I am missing something the section that has corroded is the area that retains the grease seal and dust cap. 2
mooneyflyfast Posted July 13, 2022 Author Report Posted July 13, 2022 If I found this doing owner maintenance I might let it ride but It came up during an annual. I’m not going to ask my mechanic to go out on a limb to do something he is not comfortable with. I have too much respect for him. And besides I think he is right.
RLCarter Posted July 13, 2022 Report Posted July 13, 2022 Several years ago we had a Biblical rain, ended up with 11+ inches of water in the hangar. 2 airplanes so a dozen wheel halves, everyone of the had pits in the same place (not from the flood) some worse some not to bad. When I asked the IA about them he said if everyone replaced their wheels for pitting outboard the bearing it would take Cleveland years to fill all the orders….Ended up Bead blasting, primer and epoxy paint 2
jetdriven Posted July 13, 2022 Report Posted July 13, 2022 If it is the appliance rust oleum from Home Depot it is not epoxy paint
PT20J Posted July 13, 2022 Report Posted July 13, 2022 The problem is that the felt seals can allow moisture to intrude into this area. Mine were just starting to show some surface corrosion. I cleaned them up and replaced the felt seals with the new molded ones which seal much better and are easily removed and reused when you need to remove the bearings. But they are not for CBs. Skip 199-266 Kit.pdf
Fly Boomer Posted July 13, 2022 Report Posted July 13, 2022 21 minutes ago, PT20J said: But they are not for CBs. If I'm reading correctly, SkyGeek shows p/n 154-13000 for $62.81
EricJ Posted July 13, 2022 Report Posted July 13, 2022 32 minutes ago, PT20J said: The problem is that the felt seals can allow moisture to intrude into this area. Mine were just starting to show some surface corrosion. I cleaned them up and replaced the felt seals with the new molded ones which seal much better and are easily removed and reused when you need to remove the bearings. But they are not for CBs. Skip 199-266 Kit.pdf 793.06 kB · 0 downloads Interesting, I hadn't noticed these before. For a J they show 154-12000 molded grease seal for the 40-86 main gear wheels, which are $41.65 ea at AS (compared to the felt seals and a ring, which are $16/ea for the felt and about $20 for a ring, so not far off). You need 4 to do both sides, so about $166 for all 4. Not terrible. The IPC for my J shows a 40-87 wheel for the nose gear, and the Cleveland catalog I have doesn't show a molded grease seal replacement for that wheel.
Guest Posted July 13, 2022 Report Posted July 13, 2022 There’s a standard industrial part number for the seal much cheaper than the Cleveland number. From the Wipaire float manual. Clarence
Fly Boomer Posted July 13, 2022 Report Posted July 13, 2022 1 minute ago, M20Doc said: There’s a standard industrial part number for the seal much cheaper than the Cleveland number. I’ll try find it. Always a treat to find standard parts for these birds! Thanks.
EricJ Posted July 13, 2022 Report Posted July 13, 2022 1 hour ago, M20Doc said: There’s a standard industrial part number for the seal much cheaper than the Cleveland number. From the Wipaire float manual. Clarence It doesn't appear to me that this stuff crosses to a 40-87 wheel, though.
PT20J Posted July 13, 2022 Report Posted July 13, 2022 2 hours ago, EricJ said: The IPC for my J shows a 40-87 wheel for the nose gear, and the Cleveland catalog I have doesn't show a molded grease seal replacement for that wheel They now have them for the 5” wheels. Different part number.
Guest Posted July 14, 2022 Report Posted July 14, 2022 2 hours ago, EricJ said: It doesn't appear to me that this stuff crosses to a 40-87 wheel, though. It would be worth a call to the Parker/Cleveland help line. I’m pretty sure there is an SB introducing the seal. Clarence
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