noise found oh no

[mudder110]

howdy all yep I f,,,,d it when I replaced the rear salsbury flange and seal I managed to over tighten the flange nut stuffed the pinion bearing that is the noise ive got trouble is ive done about 500ks I was so sure it was a brake sound which I replaced at the same time is this a thing I can do myself and what kind of damage could ive done cheers and merry xmas

[Bearman]

howdy all yep I f,,,,d it when I replaced the rear salsbury flange and seal I managed to over tighten the flange nut stuffed the pinion bearing that is the noise ive got trouble is ive done about 500ks I was so sure it was a brake sound which I replaced at the same time is this a thing I can do myself and what kind of damage could ive done cheers and merry xmas

Bugger, hopefully it's only the bearing and no damage to the pinion/crownwheel. You are going to have to dismantle it and inspect and clean the metal out of everything and take it from there. next time you WILL mark the pinion and nut won't you :(

[steane]

Do you think the bearing is stuffed or just noisy because it's all done up a bit tight?

I'd be tempted to back the nut off a tad and see if the noise disappears. Failing that, then I guess it's new bearing time which might mean setting up the diff again. Others with more knowledge will be able confirm/deny this.

When I did mine recently I used a new locknut, and just gave it a little bit of a twist once it was tight, so not enough to crush the spacer any further but enough for the nut to be tight. New locknut helps IMO.

[mudder110]

Bugger, hopefully it's only the bearing and no damage to the pinion/crownwheel. You are going to have to dismantle it and inspect and clean the metal out of everything and take it from there. next time you WILL mark the pinion and nut won't you :(

hell yes bearman should I just pull the cover and inspect it all how do I inspect the pinion? cheers

[Bearman]

hell yes bearman should I just pull the cover and inspect it all how do I inspect the pinion? cheers

First thing I would do is drop the oil and have a look for metal. If that looks ok I would disconnect the tailshaft and have a feel of the pinion to try to ascertain where the noise is coming from. Probably best to jack up both rear wheels for this. Don't forget to chock the front ones first and use axle stands when you get under it. Rotate the pinion and feel for rumbly or loose bearings - will the pinion flange move up/down or sideways. Is it possible it is just the mud shield contacting the housing? The next thing is to undo both drive flanges and pull the axles out of the diff centre. Then take off the rear cover and undo both carrier bearing caps and take them off. Just be careful the crownwheel carrier doesn't drop out onto your hand etc when you remove the caps. I have seen some that loose! Usually you have to lever them out with a tyre lever or big screwdriver and occasionally you have to use a spreader. The caps have marks on them that match marks on the inside of the housing - make sure the caps go back on the same side in the correct position when you reassemble it. Then you can have a look at the crownwheel and pinion for wear and fell the pinion for looseness without it contacting the crownwheel. If you replace any bearings make sure the shims go back in the same place underneath them otherwise you will have an incorrect pinion height and consequently a whiney or noisy diff or incorrect backlash if they are the carrier bearing shims. Get a new collapsible spacer and set it to the correct preload. Have fun.:)