Diff trouble

Ashley · Post by **Ashley** » Mon Sep 27, 04 5:56 pm

Hello Fella's
Need some diff advice please
My axle's very noisy when hot its a 8 3/4 sure grip
Removed diff today bearings are spot on
Ring and pinion wear marks are spot on
Cheers Ash

Guy · Post by **Guy** » Mon Sep 27, 04 6:01 pm

Are the rear wheel bearings adjusted correctly, as this can put the diff off centre and create noise.

Ashley · Post by **Ashley** » Mon Sep 27, 04 8:05 pm

Hello Guy
How do i check that and would this make the wineing
nosie when hot

Dave-R · Post by **Dave-R** » Mon Sep 27, 04 9:26 pm

One side has an adjuster. You adjust it while measuring in/out end play on the axle with a dial indicator. You need between 0.008 and 0.018 inch endplay.

Guy · Post by **Guy** » Mon Sep 27, 04 9:57 pm

Thanks Dave

Yes Ashley it would make it whine

Ashley · Post by **Ashley** » Sat Nov 13, 04 4:31 pm

Need some help here fella's
Still got diff noise
Renewed pinion bearings carrier bearings
Fitted Green bearings on the shafts
The noise seem's to be worst under light load could the
Sure grip be causing the problem
Any advice would be greatfully appreciated

Pete · Post by **Pete** » Sat Nov 13, 04 4:51 pm

In my experience most Diffs whine and resonate at a particular speed - usually Cruising Speed

There is probably nothing wrong.....

Ashley · Post by **Ashley** » Sat Nov 13, 04 5:04 pm

Hello pete
This noise cannot be normal fella its driving me mad
Two mates of mine have owned B Body's with 8 3/4s in and
Both were silent running

Alex · Post by **Alex** » Sat Nov 13, 04 6:23 pm

Did you check the mesh pattern and the pinion bearing pre load carefully?

MrNorm · Post by **MrNorm** » Sat Nov 13, 04 6:35 pm

......and with Green bearings there is no end-play adjustment.

Ashley · Post by **Ashley** » Sat Nov 13, 04 7:12 pm

Now then fella's
Ring and pinion pattern is spot on
Pinion preload is ok i know green bearings are none
Adjustable just checked they wern't to tight and bolted
Them in the noise is only there under light load

TrevD · Post by **TrevD** » Sat Nov 13, 04 7:39 pm

ok , a silly thought , could it be the universal joint on the prop shaft ?

Ashley · Post by **Ashley** » Sun Nov 14, 04 9:59 am

Now then Trev
The uj's ok fella thanks anyway
Going to strip it all down again tomorrow night
Will let you fella's now if i find anything

Dave-R · Post by **Dave-R** » Sun Nov 14, 04 10:41 am

What is the backlash on the ring like? If it is excessive that might be a sign of abnormal wear.

Did you do a mesh pattern test with some paste on the teeth? If you are not 100% sure of the pattern post a photo or two of the pattern you have so we can see.

I would not have thought a worn LSD would cause noise just cruising along??

What is the noise like? A whine?

Ashley · Post by **Ashley** » Sun Nov 14, 04 10:58 am

Hello Dave
Did a mesh test it was spot on
Can't post pic's don't have the gear i'm only a poor
Panelbeater
Anyway the sure grip is the only thing left with play
in it as you can move the wheels back & forward
with out the prop moving is this normal
Also the wine like noise my be there at high speed
but you can't here much with wind & exhaust noise