Stripped the entire thing down now, can't see any problems or obvious signs of "oh god what has happened here" areas.
This bearing has got hot, here is a video of its movement:
it runs fine and smooth.
What to do next, rebuild it all again? Send it off to have new bearings?
I'm going to get the cones machined down to get some extra life from them.
I can's see any problem with any of the components or how it was built, just the hot spot on the bearing is a little odd.
Cheers,
Posted: Wed Jul 20, 16 9:30 am
by Cannonball
GJUK wrote:Stripped the entire thing down now, can't see any problems or obvious signs of "oh god what has happened here" areas.
This bearing has got hot, here is a video of its movement:
it runs fine and smooth.
What to do next, rebuild it all again? Send it off to have new bearings?
I'm going to get the cones machined down to get some extra life from them.
I can's see any problem with any of the components or how it was built, just the hot spot on the bearing is a little odd.
Cheers,
thats probably heat used to make the bearing press on to the pinion easier,,
Posted: Wed Jul 20, 16 9:43 am
by GJUK
I have been told no heat was used to press the bearing on.
Posted: Wed Jul 20, 16 9:53 am
by ANTON
What does the corresponding cup look like.
Posted: Wed Jul 20, 16 10:05 am
by Cannonball
even a decent hot air gun will colour up the thin cage like that, there is no issue there,,
Posted: Wed Jul 20, 16 10:12 am
by GJUK
Cup...
Oh that cup...
and the 'shim round thing that goes over the pinion shaft and presses on to the bearing'
(thanks for your help guys)
Posted: Wed Jul 20, 16 10:14 am
by GJUK
Posted: Wed Jul 20, 16 7:30 pm
by GJUK
It is going to be rebuilt now with an Eaton truetrak which are quite good so I have been told. The cone type LSD can be used as a door stop now.
Good news is it should be ready for Mopars!
Posted: Wed Jul 20, 16 7:49 pm
by Pete
Truetracs are awesome.
I have one in the Coronet, and had one in the Dart - that was street drive and ran 9's with no issues.
Glad it will be sorted for the Nats.
Posted: Thu Jul 21, 16 7:09 am
by ANTON
After all the problems I had with my sure grip unit over the last few years I put and Eaton Tru Trac in mine at eh beginning of the year and it awesome. When you do a burn out is pull in straight line and doesn't snatch when turning. I wish I had done it years ago.
Posted: Thu Jul 21, 16 8:25 am
by GJUK
Thanks, that is good to hear. They seem to be 'the' LSD to have in the mopar world, at this level anyway.
Posted: Thu Jul 21, 16 8:04 pm
by GJUK
So maybe I missed the wood for the trees, I looked at the axle today...
Posted: Thu Jul 21, 16 8:07 pm
by GJUK
Re above - I have no idea what has caused that, looks fresh though and lots of burrs on the inside.
Also, axle perches - are they meant to be equal distance from the edge of the axles? (between the red dots marked)
It sat level in the car but the spring hangers appear central so I don't understand why these are not...