...this is what happens to your rotor when the lock nut comes loose in your front wheel hub. Looks like that little star shaped lock washer failed to do its job and the nut came loose and threads sheared, while doing some wheeling this weekend.
Just in case anyone was curious... (1 Viewer)
- Thread starter mechanixhorseman
- Start date
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Trunk Monkey
Moderator
Yeah, that won't buff out. I've seen a few hubs where the person putting it back together remember to bend a tab back, but not one forward. Hopefully the spindle isn't damaged and it's just a new rotor.
- Thread starter
- #3
I definitely didn't bend one forward last time. Wasn't aware of that step but it makes sense now.
are you referring to the large center nut(s) on the front hub or something on the upright?
Was this mark from hit hitting the caliper bracket?
Was this mark from hit hitting the caliper bracket?
Who was the last one to work on the hub? That star washer should not fail, are you going to need a whole new hub?
- Thread starter
- #6
Star washer failed (or was not bent enough), causing the lockring (50 mm nut in the hub) to become loose. This caused about 4mm of play in the rotors and they grinded on calipers inner face. When I tool the locknut off, the threads were non-existent so now I'm trying to source one ASAP through the local toyota parts.
I was the last person to service it, so I can't really blame anyone but myself but hopefully someone will learn vicariously through my errors. I was going over some pretty nasty terrain yesterday so it wasn't as if it happened on a spin to the mall.
The good news is my dad is a 100 owner also and just upgraded his rotors and still has his old ones. I'll probably end up replacing the front rotors with his but I'm going to see if the pads can't correct some of that surface damage once the issue is corrected.
I was the last person to service it, so I can't really blame anyone but myself but hopefully someone will learn vicariously through my errors. I was going over some pretty nasty terrain yesterday so it wasn't as if it happened on a spin to the mall.
The good news is my dad is a 100 owner also and just upgraded his rotors and still has his old ones. I'll probably end up replacing the front rotors with his but I'm going to see if the pads can't correct some of that surface damage once the issue is corrected.
Man.....when I read this thread last night I panicked.
I put new bearings in the driver side about 5k miles (10 weeks) ago. I know I did it correctly and could vividly remember bending the respective tabs both directions. I did the passenger side last week and could not remember if I bent the tab over the locknut. I drove my 40 today and left the 100 parked till I could get home and take it apart and check.
Turns out I did do it correctly last week so I went ahead and rotated tires and changed oil and checked all my tire pressures. It was a good afternoon.
Thanks for the heads up.
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I put new bearings in the driver side about 5k miles (10 weeks) ago. I know I did it correctly and could vividly remember bending the respective tabs both directions. I did the passenger side last week and could not remember if I bent the tab over the locknut. I drove my 40 today and left the 100 parked till I could get home and take it apart and check.
Turns out I did do it correctly last week so I went ahead and rotated tires and changed oil and checked all my tire pressures. It was a good afternoon.
Thanks for the heads up.
Sent from my iPhone using IH8MUD
sleeoffroad
Supporting Vendor
Nice to show some DIY mistakes so others can learn. Also nice for a DIY'er to actually fess up. Most that call us don't. They just can't explain why this and that happened, that is until you start digging for info.
Funny thing is, if this was done by the dealer, everyone would have posted to say that " Can't trust any dealer monkey, that is why I do all my maintenance myself!"
FWIW, don't rebend the tabs on the star washers. If in doubt on condition, use new ones. They are cheap.
sleeoffroad said:
There is a big difference in a dealer making a mistake and DIY'er making mistake. Dealers are not supposed to be amateurs. They are paid professionals. I have a lot higher expectations from Derek Jeter playing short stop than I do my 17 year old son. My son is a great ball player but he is not a paid professional. Yet.
I agree on using new stars. I never reuse.
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- Thread starter
- #10
Nice to show some DIY mistakes so others can learn. Also nice for a DIY'er to actually fess up. Most that call us don't. They just can't explain why this and that happened, that is until you start digging for info.
Funny thing is, if this was done by the dealer, everyone would have posted to say that " Can't trust any dealer monkey, that is why I do all my maintenance myself!"
FWIW, don't rebend the tabs on the star washers. If in doubt on condition, use new ones. They are cheap.
Well if it saves at least one other person from some seriously costly repairs, than I don't mind looking like a dumbass to the rest of the forum. I don't profess to be an expert mechanic, but I'd much rather do as much of my own work as I can and eventually become a better mechanic because of it. I'd like to think I have saved myself much more money doing my own work than this mistake has cost me. I definitely got some new stars this time. I'm just glad there was no damage to the spindle, its threads or the splines.
Tapage
Club 4X4 Panamá
I assume well paid ones .. for the price you pay to the stealership ..
