I think I have an issue...

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Mtbcoach

Mtbcoach

10 Year 15 Year
Joined
Jun 29, 2006
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179
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Location
Carolina Beach NC
My daughter drives our 80, I don't drive it as much as I should. When we took it to the Meet and Greet, I noticed a "metallic" sound when hitting the brakes, clearly from the driver side, rear brake. Thinking it would hold out until I swapped the axles I have waiting to go on it, it didn't.

Brianna came home and said the pedal went to the floor and she could barely stop it on the way home. I finally took the time to take it apart and discovered an issue...
file.jpg


Surely appears like we had a bit of a failure at some point and continued to drive on it until the seals failed, dumping the brake fluid. I guess I'll be learning how to rebuild a brake caliper in the near future...:doh:
 
Damn, looks like the piston was used as the brake pad for a while:eek:

Not the first time I've seen this happen to a rear caliper on an 80.
 
Jerry, have you checked the price of the caliper, might want to consider just replacing. looks like its a bit rusty, and if I recall I don't think they are priced that bad.
 
Very glad to hear Brianna made it home safely, Jerry! Hopefully this serves as a reminder to everyone to be proactive in their checks and maintenance.
 
Not yet Greg, I've got a take off I can put on. I'm more concerned that the rotor needs to be turned since it was having the piston on it to stop.

I just wonder how long she drove it without the brake pad and how the F did it come out. She only drives ~1.5 miles back and forth to school, maybe she's been taking the boys out wheel'n after school or something.

In any event, just had to share something unique for my Land Cruiser experience...
 
Thats right I forgot about the extra axles. I would think that a completely worn pad would have allowed the piston to go beyond its sealing point causing the pad to slide out.
 
I'd spray a lil' WD-40 on it and call it good if it were mine :D


Seriously, glad Brianna didn't get in an accident or anything.

:beer: R
 
:eek:

Mtbcoach said:
how the F did it come out.
Click to expand...

Unlike the front pads which slide along retaining pins the rear pads are self-retaining via the tabs molded into the shape of the pad itself. I'm guessing that once the pads wear down to nearly nothing they slip out because the tabs have been consumed along with the rest of the pad.

attachment.php



:hhmm:...I guess I should go check mine to make sure they have wear indicator "squealer" tabs or, barring that, at least safe thickness.
 
It's not uncommon for a pad to fall out if worn all the way down.

As for turning the rotor..... i'd say it's past that point and time for a new one entirely.
 
I don't think Cruiser rotors can even be turned to begin with. I don't think there's enough thickness to take a skim and stay in spec. At least that's what I found when I tried to turn the fonts on Emma's 80.... which weren't in bad shape at all.

:beer: R
 
lt1fire said:
It's not uncommon for a pad to fall out if worn all the way down.

As for turning the rotor..... i'd say it's past that point and time for a new one entirely.
Click to expand...

mtweller said:
I don't think Cruiser rotors can even be turned to begin with. I don't think there's enough thickness to take a skim and stay in spec. At least that's what I found when I tried to turn the fonts on Emma's 80.... which weren't in bad shape at all.

:beer: R
Click to expand...

I agree, at least that is what I've gleaned off of other threads.

Just for comparison, I measured the thickness of the rotor on the rig now and the rotor of the axle that is destined for the rig.

15 mm on the rig, 18 mm on the locker destined for the rig. I don't have an FSM for it but I'd guess the 15 mm is below spec...
 
If you have to buy new rotors I highly recommend the Disc Brake Austrulia setup. I have it on the front of my 80 and just installed the setup on the front of the 100 this past weekend. It is night and day in regards to stopping power.
 
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