when wil it let go!!?

MilesnMiles · Post by **MilesnMiles** » Wed Sep 17, 08 6:48 pm

Hmm, wanted to check cause of driveline clunk. I can push the rear yoke upa nd down maybe 1/4". Its not the UJ as thats new and good.
Just wondering how long 'til it might let go

Just been hooning around and figure i'd better calm down!

Pete · Post by **Pete** » Wed Sep 17, 08 8:14 pm

It will let go at the most inconvenient time possible...........

MilesnMiles · Post by **MilesnMiles** » Wed Sep 17, 08 9:04 pm

It can't Pete, that would have been half way down the strip at Shakey!
That said, i still have to make a local show this weekend

Ivor · Post by **Ivor** » Thu Sep 18, 08 9:37 am

Why don't you fix it, then you can relax?

Otherwise, I bet you it breaks, while you are in the queue at the main gate at the car show!

Anonymous · Post by **Anonymous** » Thu Sep 18, 08 11:13 am

Mate, you shouldn't have play in anything like that. We are talking clamping forces and friction fits, gear mesh, backlash here. If the UJ is moving in the yoke, either the UJ, ir the yoke is knackered. If the yoke is moving axially, laterally or longitudinally in the case, either you have shagged bearings, or pinion or ring gear. If the teeth are worn and are bashing together (too much backlash or gears allowing to separate because of poor bearings) you will knock teeth off eventually, which could lock pinion and ring gear (not good). Helical gears need some backlash but its thou, not 1/4 inch. What plane is the 1/4 inch movement in?

As Ivor said, don't wait for it to break, diagnose and fix now. If it lets go, the bill will be big.

Pete · Post by **Pete** » Thu Sep 18, 08 11:20 am

By this point I fear the bill will be big anyway - Pinion Bearings and ring and pinion gears must have taken a battering by now; and potentially all the bearings in the Diff......

Anonymous · Post by **Anonymous** » Thu Sep 18, 08 11:23 am

Yeah, I think you are right Pete. We have many issues related to this type of problem at work. Once the obvious signs are present, its usually too late.

Get yer wallet out sunshine

MilesnMiles · Post by **MilesnMiles** » Thu Sep 18, 08 3:35 pm

Already did! Got a rebuild kit coming from Hausers, if ring and pinion damaged i'll probably end up buying a set of 3.55s as 3.91s do prove a tad uncivilised except for hooning.
Anyway, thanks for telling me off properly

. Just glad I ddibt notice it on the way back from Shakey.
Would have ben bubbly bum time!

Pete · Post by **Pete** » Thu Sep 18, 08 3:55 pm

"ben bubbly bum time" - I take it he is a good friend of yours

MilesnMiles · Post by **MilesnMiles** » Thu Sep 18, 08 4:14 pm

Anonymous · Post by **Anonymous** » Sat Sep 20, 08 10:11 pm

Most common fault???

Yes its the pinion NUT!!!----Its come undone?.

And if its a 489 the crush sleeve has collapsed!!!

Drive with fear of Death, or worse!!!!!!!!!!!!!!!!!

Bozobacca???

MilesnMiles · Post by **MilesnMiles** » Sun Sep 21, 08 6:24 pm

No drama, replaced the entire pumpkin yesterday. The nut is tight on the offending diff, but the bearing and seal are failing.