very noisy diff

Anonymous · Post by **Anonymous** » Sun Aug 01, 04 7:05 pm

dont think my diff liked the nats! its making a loud 'grinding/banging' sort of noise. how do i measure the diff size? and is it an easy job to change?

Ivor · Post by **Ivor** » Mon Aug 02, 04 12:39 pm

Well a pic of the diff or some casting numbers would help Joe! The good news is that they are easy to fix.

Did you have any oil in it by the way?

Anonymous · Post by **Anonymous** » Mon Aug 02, 04 12:49 pm

yeah i topped it up 2 weeks ago and checked it last night. its more of a washing machine noise now.i will have a quick look tonight

Ivor · Post by **Ivor** » Mon Aug 02, 04 1:48 pm

Well don't waste the opportunity mate, chuck the laundry in...I bet a few shirts and socks will quieten it down!

Anonymous · Post by **Anonymous** » Wed Aug 04, 04 7:49 pm

just had a quick look, nope there wasnt much oil in there. it has leaked most of it all over one of the brake shoes and all over the inside of my wheel and arch, nice! topped it up is slightly quieter but still sounds bad at 30-35mph and and whines at 40-45mph, would a inbalanced prop shaft do much damage??

Kev · Post by **Kev** » Wed Aug 04, 04 8:04 pm

An out of balance prop wil end up joining you in the passenger compartment where you can inspect it yourself!. Out of balance will sound like a drumming noise increasing as the road speed increases. If you suspect it is out of balance, don't chase Porsches on your way home to check it, DrogOBand!

Anonymous · Post by **Anonymous** » Wed Aug 04, 04 8:37 pm

it sound a bit like that at at 71mph and vibrates everything! at 70 it is fine, nice and smooth. i balanced all four of my wheels 3 times and no difference, ill whip it off and get it checked out when i do the diff,

Mick · Post by **Mick** » Tue Aug 24, 04 10:19 pm

Joe
I've just had the same problem.
It is the inner seal in the axle.
Take your brake drum off and there will be oil everywhere.
Take all the brake hardware off , unbolt the half shaft pull it out with a slide hammer, just inside the axle tube you will see the inner seal measure the distance in then pull the old seal out and tap a new one in the same distance, clean everything down and either buy new shoes or brake clean the old ones and put back together you will also need to reset the end float on the axle

Anonymous · Post by **Anonymous** » Wed Aug 25, 04 1:03 am

yeah i found that out, n/s brakes are covered in oil. just got some new seals though so hopefully that will cure it. the diff still has a whine at 40 mph but should last a few more miles.