110 Short Nose Rear Diff Outer Bearing Removam

[Brown]

What sort of state were the pinion and ring gear in? Any pitting? Any notches or steps where the teeth press together? When you turn them by hand do they feel smooth? No notchy feeling when the teeth go past each other? I'm sure they're fine but I'm just trying to work out where the roughness and noise is coming from now you've replaced the bearings.

Very occasionally you get a duff bearing. But the quality control at GKN, Timken, NTN et al is pretty good. I once saw a tapered roller bearing that had a flat on one of the rollers, presumably from the factory, but that was many years ago.

 

[bankz5152]

They both looked fine!

My new ATB is build and ready to collect!!

So ill drop off the ****ed one and see why what he thinks is wrong with it

 

[Brown]

Good, sounds like you'll be back in business soon. So that's an Ashcroft limited slip mechanism and a pegged casing?

 

[bankz5152]

Indeed! With stronger bolts throughout and a "super flange" to keep any muck out

May be able to collect today!

 

[neilly]

Are you going to uprate the rest of the drive train as well?

You got a link to the diff please...

Cheers

 

[bankz5152]

Eventually yes, but not until it goes bang and i have the cash! Front diff would get the same treatment, or at least get it pegged. Possibly with HD front shafts/CVs & flanges

Gearbox/TX box Syncro Duraspec builds with an ATB/LSD in the TX box.

All that is a damn long way off though!!

https://megasquirt-v8.co.uk/diff_axle.php

 

[neilly]

Sounds good,

A few Birthdays and Christmas' there....LOL.

Cheers

 

[neilly]

Great link thanks... reading it now. I may be some time.




Cheers

 

[bankz5152]

Great link thanks... reading it now. I may be some time.
Cheers

Some good videos too showing the work!

Ill post piccys of mine when i get it tomorrow!

 

[neilly]

Some good videos too showing the work!

They were very good, the problem is watching that, I started to think what I would change on mine, the list could get long and expensive very quickly...LOL.

Cheers

 

[bankz5152]

Hahaha easily! My current rule is wait until something goes bang and fit the best I can, when remindes me i must get saving! Hahaha

 

[bankz5152]

oooooo Nige sent me some pics!

 

[Brown]

That'll be nice.

It took me a while to get my transmission the way I wanted it. Aside from the present problems you report, Land Rover transmissions aren't that difficult to work on as an amateur. I managed to get my LSD centre diff and overdrive unit in and working a couple of Christmases ago, and got my LSD axle diffs in the year before that. With very limited workshop facilities, too; mainly at the side of the road plus some bits that could be taken into the dining room or the tiny shed at the back of the house where the washing machine lives. All still sweet after 30,000 and 40,000 miles respectively. So what I'm saying is that it wouldn't be beyond your powers to sort out a centre LSD yourself.

I wouldn't want to do the same on a Bentley Continental 4 wheel drive system, for example.

 

[bankz5152]

Good to know, while they look simple not sure id bother having another go! Lost £65 in bearings, £25 dial gauge (doube ill have any other use for it) and 2L of oil!

Turns out the crown wheel was shagged, where the force from the axle movement moved the bearings off it cause the crown to wear badly and wrongly. Was almost no engagment with the pinion even with no backlash!

So glad I went to a pro! New diff is in, just awaiting some proper EP90!

 

[neilly]

There is an almost identical video on his website where he talks about the crown wheel being distorted.

Good to hear you got it sorted, how nice is the new one? just goes goes to show there is a lot more to it than just bunging in some bearing etc. One of those things that spending a day with someone and going thru it step by step is worthwhile.

Fingers crossed the second hand one I fitted the other week still sounds good.....

Cheers

 

[Brown]

Do you still have the the old one? If you do, I'd appreciate some close up pictures of the teeth. It would be useful to see the wear pattern on them so I'll know what's problematic in future. Luckily mine were OK last time I looked (still had machining marks on them), but it would be nice to know what they look like when they're out of tolerance.

You may have handed it in to Megasquirt as a 'core' so this won't be possible, if so don't worry about it.

 

[bankz5152]

So much more! He really knows his stuff, ill do a lil write up come monday.

Just waiting for oil!!

@Brown i havnt got the diff, left with Xcess on exchange

 

[jamesmartin]

There is an almost identical video on his website where he talks about the crown wheel being distorted.

Good to hear you got it sorted, how nice is the new one? just goes goes to show there is a lot more to it than just bunging in some bearing etc. One of those things that spending a day with someone and going thru it step by step is worthwhile.

Fingers crossed the second hand one I fitted the other week still sounds good.....

Cheers

thats common when used in very extreme conditions the same were pegging helps most will never encounter such

 

[jamesmartin]

Do you still have the the old one? If you do, I'd appreciate some close up pictures of the teeth. It would be useful to see the wear pattern on them so I'll know what's problematic in future. Luckily mine were OK last time I looked (still had machining marks on them), but it would be nice to know what they look like when they're out of tolerance.

You may have handed it in to Megasquirt as a 'core' so this won't be possible, if so don't worry about it.

any issue with teeth shows up on pinion first generally as those teeth are getting 3.5 times the contact

 

[Brown]

In my youth I used to have a little pathology museum of bits taken out of cars. Pistons that had welded themselves into cylinders, bearings where the case hardening had flaked off the rollers and so on. We had some gears with stepped teeth as well, out of a Triumph Herald diff. We also used defunct motor car components as building materials. Cylinder heads make quite good cornerstones in stone walls for example, and diff mechanisms are good as finnials on top of gateposts.