Pulled 2 damaged 3rds from toyotas and both had bad crush sleeves.
My comments are not intended to target any particular person, expert, website, or group, but merely what my observations are to what I hear and what I read on the internet on 6 or more automotive websites.
I don’t doubt you believe the 2 diff failures you saw were caused by a “bad crush sleeve”. Can you please explain how you determined that the crush sleeve caused the failures, and what does a bad crush sleeve look like, and how does it fail?
These discussions, repeated over and over on various sites, are typically laced with anecdotal and continually promoted misinformation.
Often there are comments that are just plain Bravo Sierra, and obviously the person simply is ignorant of the facts.
Is seems clear that the collar/shim use has a couple advantages over a crush sleeve setup. But, how do those advantages have anything to do with cause of failure?
Nowhere can I find that common differential failure is caused by a crush sleeve or collar and shims.
Since there are millions and millions of differentials being manufactured by automakers using a crush sleeve (for automated production advantages), it seems logical that if there was any significant issue with crush sleeves or the crush sleeve setup design, they would NOT be using crush sleeves… PERIOD.
Typical premature differential failure is caused by lack of proper lubrication, over-loaded stress due to excessive power forces, sudden shock loads, or too much resistance - like over-sized tires. The other cause of failure is simply improper installation and setup. And of course you can blame a failure on defective parts.
Again, in my limited experience, differential failure in my street vehicles, tow vehicles, and my 4 wheel drive vehicles has happened zero times. The diff failures I was aware of during my very active 4-wheeling years, was caused by excessive shock loads while negotiating an obstacle.
That's just my opinion - it may be worthless.
Gnarls.
