My last wrenching endeavour saw me replacing the front brake rotors and pads on the XC90, which after a mild rant about red Loctite and some waiting for the correct parts to arrive went smoothly. I figured this week would be a good time to tackle the rear brakes, so after perusing the YouTubes for details and punting a couple of change requests into next week I started the job in earnest.
In theory, the rear calipers are very similar to the fronts, just smol. The sliders come off using a 7mm nex bit, just like the fronts. Two 13mm bolts hold the brackets in place vs. 17mm, but same deal. However, the sliders sit super close to the coil springs, so there’s not enough space to put a socket wrench in there. Instead it’s easier to remove the bracket from the spindle and then remove the sliders. No biggie, then.
So then the rotor comes out. Remove the set screw, whack it with a hammer a bit, and it pops off from the hub. But of course it won’t come off entirely because the parking brake shoes are stuck on the lip on the inside of the rotor. I found that some wiggling back and forth allowed the rotor to slowly slide off, so I kept on it until the rotor came off entirely. And then this little dinger fell on the floor.
Cock. The retainer spring for the top shoe broke off Perhaps in my effort to pull the rotor I managed to break it, which sucks sucks, but shrug.gif. More likely, though, it was broken before I removed the rotor, which would go some way to explain the occasionally erratic behavior of the parking brakes, and also probably explain why the top shoe has a flat spot.
It’s an annoying setback, as I now have to order more parts and refresh the parking brakes as well, but as it’s obvious that they have not been touched in a long time, I might as well go for it and feel better knowing that they’re good.