Diff oil change, metalic bits

latil · Post by **latil** » Tue Jul 19, 16 4:16 pm

Open his links in each post! http://www.forabodiesonly.com/mopar/thr ... ne.258222/

GJUK · Post by **GJUK** » Tue Jul 19, 16 4:29 pm

Oh perfect, thank you.

GJUK · Post by **GJUK** » Wed Jul 20, 16 9:26 am

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,

Cannonball · Post by **Cannonball** » Wed Jul 20, 16 9:30 am

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,,

GJUK · Post by **GJUK** » Wed Jul 20, 16 9:43 am

I have been told no heat was used to press the bearing on.

ANTON · Post by **ANTON** » Wed Jul 20, 16 9:53 am

What does the corresponding cup look like.

Cannonball · Post by **Cannonball** » Wed Jul 20, 16 10:05 am

even a decent hot air gun will colour up the thin cage like that, there is no issue there,,

GJUK · Post by **GJUK** » Wed Jul 20, 16 10:12 am

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)

GJUK · Post by **GJUK** » Wed Jul 20, 16 10:14 am

GJUK · Post by **GJUK** » Wed Jul 20, 16 7:30 pm

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!

Pete · Post by **Pete** » Wed Jul 20, 16 7:49 pm

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.

ANTON · Post by **ANTON** » Thu Jul 21, 16 7:09 am

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.

GJUK · Post by **GJUK** » Thu Jul 21, 16 8:25 am

Thanks, that is good to hear. They seem to be 'the' LSD to have in the mopar world, at this level anyway.

GJUK · Post by **GJUK** » Thu Jul 21, 16 8:04 pm

So maybe I missed the wood for the trees, I looked at the axle today...

GJUK · Post by **GJUK** » Thu Jul 21, 16 8:07 pm

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...