Weird noise help

[mnbrodie]

Hi I went out 4wding today noting to full on started the track with no problems in low range, then as I drove out of a rut I lost the drive to the front wheel and the 4wd light flashing so after about 2 hours of winching out of the track I hit the road and noticed a squeel like sound coming from the bit where the CV slots in to diff side, drove home nice and easy no steering shutters or brake problems just a loud squeel sound,anyone have any ideas or similar problem's

[ag9111]

I would say you have done a CV and that is the busted ends rubbing together.

[mnbrodie]

Yeah hope so I snapped one before, just thought if it was the diff it would be more of a crunch sound

[ag9111]

4wd light flashing is a bit of a worry though.
What side did you lose drive to. passenger or drivers.

[mnbrodie]

Both I'm pretty sure it wouldn't lock into 4wd just flash

[mnbrodie]

Ok so I had a look tonight and this is what I spotted can't remember what it is called but could explain a few things

[RHKTriton]

Ouch!

Dog in the diff only touching instead of engaging?

[4wd26]

looking at that photo, I'm now not sue that the actuator is damaged.

BUT what you have is wacked the diff real hard and the seat / seal into the diff is damaged.

(the actuator is the part with the corrugated boot, but it splits from the diff about 1" away from that seal via a pin, that connects the forked actuator to the diff (via the pin)

the damaged seal is a worry as the actuator will not be able to engage, and I have not sourced that part, nor able to remember anyone else having damaged that part on the diff.

Wreckers will usually sell a actuator, but that seal..... might have to buy the whole diff (sometimes cheaper than labour and parts at a mechanic and MMA stealer prices)

also check the wires to the diff switch, as they can sometimes be damaged/ ripped off.

[Mayhem2015]

Wow. Nice hit, big damage. Lots of mud and debris under there. Pushing pretty hard?

Hope repairs don't turnout being too difficult.

[mnbrodie]

So the mechanic didn't have enough time to check it out today, but I'm preparing for the worst, and checked out a local wrecker and they have a ml front diff for sale auto like mine but mine is a mn, should it fit? 4:1 diff ratio

[4wd26]

if your ratio is 4.1 then it's a straight swap over.

just confirm that the diff looks like yours, and the ratio is correct.

lots of wreckers don't know the differences and there are quite a few iterations and ratios around.

diffs without actuator and 3.9 ratios.

if you can try and get the diff complete from side to side complete with the actuator and switch, then its a easier fitup that you can do yourself.

[mnbrodie]

Yeah full setup just have to work out my diff ratio on my 2010 mn auto

[4wd26]

There is usually a sticker on the rear diff, failing that on the compliance plate is a trans axle number find that and take a picture

But I'm betting you have a 3.9 ratio

[mnbrodie]

Yeah ok I'll see what the mechanic says tommrow and go from there, the car is there at the moment so I can't check right now, thank a lot for the help everyone

[Minza]

Might be wise to invest in some bash plates so you can go just as hard but without the damage, that definitely wouldn't of felt nice when you copped that wack

[mnbrodie]

Yeah going to get some as soon as this is fixes, yeah it did Go bang

[mnbrodie]

So a update from the mechanic getting the front drive shaft fixed as it took the impact lucky it didn't crack the transfer case, and the part that comes of the diff center I think its called the diff housing is getting replaced going to cost a bit to fix it back up but I am lucky could of been a new front diff and transfer case

[mnbrodie]

Looking at the diff I posted a pic of a few post above this what is the part of the diff that the actuator sits on called? So that left hand side bit

[ag9111]

Axel tube?

[NowForThe5th]

Inner shaft tube or casing.

[mnbrodie]

So what would happen if my diff is a 3.9 and I put a 4.1 complete diff in? Would it work or not?

[NowForThe5th]

Only until you put it into 4H (or 4HLC on Super Select).

After that we can run a book on whether diff or transfer case would be the first to self destruct.

When the centre diff is locked both ends must turn at the same speed or there will be breakage.

[mnbrodie]

OK yeah that makes sense wasn't sure how it all worked, still got a a squeel sound while driving comming from the front end just like something is rubbing against something

[mnbrodie]

Thinking it could be a bearing or something to do around that the faster the car gos the louder it gets

[mnbrodie]

Its sort of sounds like the brake dust cover is rubbing but its not