Reply With QuoteCertainly was not the right advice to say it was ok to drive home... these roadside rac/aa types can be soooo wrong sometimes! !!😠😠
Fossicker
SupporterPulled into the cinema carpark at Nowra and this really bad knocking noise started. We went and saw our movie and came back out hoping we had a flat but could locate the noise after about an hour my husband finally let me call NRMA and he diagnosed the problem within 5 mins... the front diff.
He said it was fine to drive home thankfully but now I either need a second hand diff or a rebuild (the hot metal smell when we got home sort of confirmed that for us)
Anyone done theirs and could give me a $$ figure or how hard was it if you did it yourself?
Last edited by Pedro_The_Swift; 14th June 2017 at 05:15 AM. Reason: swear filter dodge
Swaggie
Certainly was not the right advice to say it was ok to drive home... these roadside rac/aa types can be soooo wrong sometimes! !!😠😠
The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
Master
No advice on rebuilding the diff, but I second that it was bad advice given to you on driving it home....
Bad luck - I'm sure somebody will be along shortly with some advice on the diff.
Master
If driving it hasn't damaged the axle splines then it's about a four beer job. Dunno what your budget is but you should be able to pick up a second hand diff for under $200 without too much trouble. If the axles are damaged you're in for twice the fun.
LordRover
SubscriberProbably easier and cheaper to just replace the whole front axle, parts are cheap and it can be done in just a few hours.
MY08 TDV6 SE D3- permagrin ooh yeah
2004 Jayco Freedom tin tent
1998 Triumph Daytona T595
1974 VW Kombi bus
1958 Holden FC special sedan
Fossicker
SupporterWe have sourced a secondhand one (thanks Gary) and we have the advice to fix it but I was worried about the balancing of it (apparently that's a thing)
Swaggie
Diff,or driveshaft with the problematic cardon joint?
Either way it shouldn't be driven
Fossicker
SupporterJosh here (Shell's other half).
I started doing some prelim investigations to see just how bad everything is, I've dropped the oil in the diff, expecting to see chaos; no major chunks, a few chips tho, and oil is still good (only about 10000km old), however there's a little back lash in the diff if I rotate wheels (both are up on stands ATM).
Where to from here, just dive in and see what the internals are like? A quick look thru the fill and drain ports doesn't set off any major alarms, can see what looks like spider and side gears in carrier but I don't have a borescope with me to check out the rest.
Front driveshaft is only about 25000k old, and appears to be in decent condition, double cardigan looks good too.
CV boots are intact and car doesn't clunk during cornering, only under load/acceleration, can best be described as a low frequency high displacement vibe. Coasts quiet as a mouse.
Im open to suggestions on a way ahead, replacment of diff doesn't look terrible, but I'd rather prove that is what it is first, any other issues cause a similar vibe, Xfer case perhaps?
Cheers in advance.
ChatterBox
SubscriberHi Josh , if you have a cdl remove the front prop shaft , engage the cdl and drive long enough to see if the problem is still there, before you do , see if you can feel any roughness by turning the diff pinion, also feel for tight spots in the front shaft
Fossicker
SupporterDisco,
Thanks for those pointers, I had already dropped the oils and started on removing the diff before I read your reply.
I didn't get the chance to run with the front driveshaft removed so I shook the input pinion flange on the diff and had a fair bit of movement there, and a little but not much on the transfer case output flange. I continued on with the planned diff replacement (replacement diff from Gary was in better condition), finished everything up without any major issues and went for a test run without the front shaft.
Everything was ok.
Put the shaft back in after a good grease up and went for a drive. The vibration was back, but at a lower intensity and a higher frequency, also persistent now when under load and coasting.
Turns out the centre bearing on the double cardan was flogged out. (Thanks Gary for identifying)
It's surprising because the shaft is only 25000k old and is one of the upgraded types with grease nipples etc. I didn't recognise it before because it was a slow thump, not a higher speed vibration, or squeal as before when the unis went on the old shaft.
I guess the less than ideal advice to drive home from the helpful NRMA mechanic on Tuesday night wore the bearing to the point where it was much easier to diagnose. Who would have thought.
Big thanks to Gary for a temporary front shaft until mine is re built, and a tighter front diff. Also a shout out to the guys at Roverworks in Canberra (our usual mechanics) for the advice and help over the phone.
Hope we provided everyone with some wonderful entertainment.
Josh and Shell.
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