Well, things with moving parts break in time. The white whale, had a sticking brake pad, very well, new set of pads, gah, it was a stuck caliper piston, instead of waiting another day to get a reman caliper, I clamped the working piston and pumped out the stuck one, the low piston on the caliper, rust behind the dust boot and debris in the caliper low point. Clean the bore, remove square seal and dust boot, wire brush and scrape everything clean. Use a flat side of a screwdriver to rub over the square seal edges to clean everything up and remove any stuck debris. reassemble and all is well, new pads and a successful commercial inspection sticker the next day. Inspector commented the parking brake doesn't hold the truck back. Well duh, truck can drag 30,000 pounds, parking brake is for parking.

Big trailer was outfitted with hydraulic disc brake axles a little while back, but the axles set outside for a year or so while waiting, again, stuck caliper but the dust boots aren't like automotive ones, with heat they turn brittle and hard. Ordered a pair of caliper rebuild kits, likely will order another pair to keep in stock. On the last trip one of the axle oil seals failed it seems, emptying all of the oil all over the brakes. It could be that the dragging brake overheated the seal and caused it to fail, I picked up a pair of axle seals, hard to come by so I'll order a full set to keep in the tool box.. The annoying part is the seals are pretty much only available from the mfg and not from say my local Napa store, so its mail order only and $30-$40 a seal, so with brake pads and rebuild kits I'm at $120 a wheel for overhauling. Hopefully I can avoid any issues going forward with rebuilding two wheel brakes instead of all four.

This little foray has sidelined several days of work on the house project, I might have to crank up a few late night sessions to try and catch up with my schedule.