Rick Koch:
I found the number 066-03000 in my parts book but something recently made me question that and wonder about 066-07100. Can’t recall why now. But in either case, I guess there needs to be an equivalent number at Aircraft Spruce, and I’m not sure what that would be. I was hoping to order from Spruce since I’m getting some other things as well (screws, fuel cap o-rings, etc). Do you happen to know a valid brake lining number for Spruce to fit my 78 Sundowner? What about brake disks? Chrome disks? Stainless steel disks?
Editor:
The linings for Cleveland brakes on the 19/23/24 were originally the Cleveland 66-30 (asbestos), with the 66-55 being a HD asbestos semi-metallic alternative. Now there is a single organic (non-asbestos) replacement, the Cleveland 66-105. The (usually) less expensive RAPCO alternative is RA66-105. Aircraft Spruce sells both brands of the latest linings.
There were several STC’d stainless steel brake disks on the market in the 90’s (both white and black SS). Despite having a slightly lower heat transfer rate than standard steel disks, all those initial-offering SS disks worked well enough with the plain asbestos linings (66-30), on the light piston GA fleet, but showed excessive wear of both disk and linings when used with the 66-55 and 66-105 linings. I did see one vendor at S&F hawking approved (STC’d) SS disks that he claimed were compatible with the 66-105 linings, but I have no personal experience with them. I’m mentioning this just in case someone sees ads for SS disks. The chrome disks work fine with all lining types.
If you have no experience with this, make sure you get trained in it. You need a brake rivet punch, set, and die. There are different types, and some work better than others. The T-handle setscrew type, versus the hammer-set type, provides the most control and least risk of cracking linings. You need to know how to do this properly; otherwise you will ream out the rivet holes in the lining carrier plates, or crack the linings, or both. Unlike auto linings/pads, the aircraft linings do not normally come already riveted on new carrier plates. You have to remove the old linings, and rivet the new ones on the plates. Make sure the new linings come with rivets. It is best to keep extra rivets on hand.