Sloppy brake caliper

Thedude

Active member
Joined
Dec 2, 2025
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38
Location
Alaska
This probably belongs more in the tech/mx forum but it didn’t seem to fit any of the areas so I guess I’ll put it here.

Last time I flew the right brake had more travel than usual before firming up but the braking force felt normal. Preflighting today I noticed the right brake caliper felt looser than normal and a bit sloppy. It seems like the anchor bolt is loose in the bushing and has play. The nut is tight but the entire thing has play and spins freely. Am I right in leaning towards the bushing/anchor bolt requiring replacement? I see no other way to torque the nut down since the bolt spins.

IMG_4801.gif
 
That's a brake guide pin, not a bolt. You have to take the caliper off and hold the pin to tighten it. If it's been like that for a while, I could have wallowed out the caliper, requiring it's replacement as well
 
Thanks for the advice. Parts diagrams in the maintenance manual seemed to call this out as an anchor bolt but I would’ve described as a guide pin if I hadn’t paged through the manual first.
 
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