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#4608985 - 12/20/17 05:54 AM AWD: driving with bad rear diff in 2WD (FW) mode ?
Superflan Offline


Registered: 04/28/15
Posts: 358
Loc: Reunion Island
Hi,

today, my wife's car (Koleos in sig) began to make strange noises. After visual inspection (without tearing anything apart but the wheels), I went for some test drive. It seems to come from the rear differential (it's an AWD vehicle).

It goes like a HARD clunk, with some wheel locking when it happens. If I switch to 2WD mode, so far it stopped to clunk but there's some now some bad gears or worn bearings.

Do some of you think that, awaiting rear diff replacement, the vehicle can be driven in 2WD mode (fwd only) without causing direct severe injury from a shaft that would break, some wheel lock, or something along this ?

Right now I'm going to drain the rear diff oil to see if there's some big chunks of metal in it.
_________________________
Yaris 1.0 201mkm 5W40 ACEA A3/B4
Kangoo 1.5 DCi 15W40 ACEA E7
Wife's Koleos 2.0 dCi DPF 6AT eco-map 162mkm 5W40 C3

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#4609003 - 12/20/17 06:22 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan]
SteveSRT8 Offline


Registered: 10/10/08
Posts: 18958
Loc: Sunny Florida
Lots of 4WD fans have used this method to get home after something breaks in their rear driveline.
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#4609004 - 12/20/17 06:25 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: SteveSRT8]
Superflan Offline


Registered: 04/28/15
Posts: 358
Loc: Reunion Island
Originally Posted By: SteveSRT8
Lots of 4WD fans have used this method to get home after something breaks in their rear driveline.


Good to hear that, but in my case it's more doing something like approx. 1000 miles before getting parts replaced...

Maybe by emptying diff oil and removing the two rear halfshafts ?


Edited by Superflan (12/20/17 06:28 AM)
_________________________
Yaris 1.0 201mkm 5W40 ACEA A3/B4
Kangoo 1.5 DCi 15W40 ACEA E7
Wife's Koleos 2.0 dCi DPF 6AT eco-map 162mkm 5W40 C3

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#4609062 - 12/20/17 07:44 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: SteveSRT8]
Linctex Offline


Registered: 12/31/16
Posts: 6176
Loc: Waco, TX
Originally Posted By: SteveSRT8
Lots of 4WD fans have used this method to get home after something breaks in their rear driveline.


I have also been there, done that.


As per your Koleos 2.0 .... let us know what you find when you pull the cover off the diff FIRST
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#4609084 - 12/20/17 08:11 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Linctex]
Superflan Offline


Registered: 04/28/15
Posts: 358
Loc: Reunion Island
Originally Posted By: Linctex
As per your Koleos 2.0 .... let us know what you find when you pull the cover off the diff FIRST


Seems that the bolts on the upper side of the diff aren't accessible enough for me to pull out the cover without removing the diff from the driveline frown I just flushed the oil and this is what I found :

Oil leak from halfshafts, but the oil quantity in there was near OK (0.55l, found 0.45):


Left: fill plug, Right: drain plug with magnet and a lot of metal


Clean drain plug:


Shiny oil:


1-5mm metal chunks (found a lot but didn't take the pic):
_________________________
Yaris 1.0 201mkm 5W40 ACEA A3/B4
Kangoo 1.5 DCi 15W40 ACEA E7
Wife's Koleos 2.0 dCi DPF 6AT eco-map 162mkm 5W40 C3

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#4609090 - 12/20/17 08:22 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan]
PimTac Offline


Registered: 03/04/17
Posts: 4329
Loc: Soviet State of Washington
Ouch. How hard is it for you to get a diff considering where you are?
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#4609092 - 12/20/17 08:25 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan]
AZjeff Offline


Registered: 01/14/11
Posts: 2651
Loc: PV Az
What the heck is a Koleos? You say you had some wheel lock with the rear engaged, would there be a concern the chunks could get somewhere bad when disengaged while your wife is driving?

Trade cars so you get to deal with it until fixed?
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#4609093 - 12/20/17 08:25 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan]
PimTac Offline


Registered: 03/04/17
Posts: 4329
Loc: Soviet State of Washington
I had to look up Koleos since itís an unknown name to me. From Renault-Nissan. Looks similar to a Rogue here but some differences. What year is yours?
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#4609099 - 12/20/17 08:32 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: PimTac]
Superflan Offline


Registered: 04/28/15
Posts: 358
Loc: Reunion Island
Originally Posted By: PimTac
Ouch. How hard is it for you to get a diff considering where you are?


We can have common spare parts here but a rear differential... must fetch from Europe or Korea. Approx 1000 euros (used one) + shipping... + random delay (could be weeks).

I was planning to do major suspension work (shocks, arms, ...), I guess I will have to do that later, money-wise.
_________________________
Yaris 1.0 201mkm 5W40 ACEA A3/B4
Kangoo 1.5 DCi 15W40 ACEA E7
Wife's Koleos 2.0 dCi DPF 6AT eco-map 162mkm 5W40 C3

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#4609106 - 12/20/17 08:39 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: AZjeff]
Superflan Offline


Registered: 04/28/15
Posts: 358
Loc: Reunion Island
Originally Posted By: AZjeff
What the heck is a Koleos? You say you had some wheel lock with the rear engaged, would there be a concern the chunks could get somewhere bad when disengaged while your wife is driving?

Trade cars so you get to deal with it until fixed?


I guess Iíll flush and drive the diff many times with some cheap oil till it comes clear, since thereís no load on the gears it should be okay

Trade cars? Lol she cringe at the idea of driving my old Toyota Yaris, or my old Renault Kangoo smirk In fact, sheís driving 100 miles a day, doing door-to-door (visiting nurse). So sheís almost dependant of comfort, auto trans, and ground clearance, all of which my cars donít have.
_________________________
Yaris 1.0 201mkm 5W40 ACEA A3/B4
Kangoo 1.5 DCi 15W40 ACEA E7
Wife's Koleos 2.0 dCi DPF 6AT eco-map 162mkm 5W40 C3

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#4609112 - 12/20/17 08:41 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: PimTac]
Superflan Offline


Registered: 04/28/15
Posts: 358
Loc: Reunion Island
Originally Posted By: PimTac
I had to look up Koleos since itís an unknown name to me. From Renault-Nissan. Looks similar to a Rogue here but some differences. What year is yours?


2013. Itís a Renault-Nissan-Samsung, sold as QM5 in Korea
_________________________
Yaris 1.0 201mkm 5W40 ACEA A3/B4
Kangoo 1.5 DCi 15W40 ACEA E7
Wife's Koleos 2.0 dCi DPF 6AT eco-map 162mkm 5W40 C3

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#4609124 - 12/20/17 08:48 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan]
PimTac Offline


Registered: 03/04/17
Posts: 4329
Loc: Soviet State of Washington
Originally Posted By: Superflan
Originally Posted By: PimTac
I had to look up Koleos since itís an unknown name to me. From Renault-Nissan. Looks similar to a Rogue here but some differences. What year is yours?


2013. Itís a Renault-Nissan-Samsung, sold as QM5 in Korea





Thanks for that info. Only four years old and the differential goes out? Has to be a fluke or it has been driven hard. How was the lube? Any water?
_________________________
2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
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#4609125 - 12/20/17 08:53 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: PimTac]
Superflan Offline


Registered: 04/28/15
Posts: 358
Loc: Reunion Island
147000Km, factory fill (I was planning to finally change the oil), Renault specs it as lifetime fill. We bought the vehicle used with 25000km back in 2014.

Nissan specs the same diff (R145, same as rogue) for 50000km OCI.

I guess the severe service and the lack of oil change killed it prematurely.

No visible water in oil for now.

Do anyone knows how to tell if another R145 from another vehicle should be a bolt-on?


Edited by Superflan (12/20/17 08:54 AM)
_________________________
Yaris 1.0 201mkm 5W40 ACEA A3/B4
Kangoo 1.5 DCi 15W40 ACEA E7
Wife's Koleos 2.0 dCi DPF 6AT eco-map 162mkm 5W40 C3

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#4609140 - 12/20/17 09:08 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan]
Superflan Offline


Registered: 04/28/15
Posts: 358
Loc: Reunion Island
About the cover, it clamps the halfshafts seals with the other part of the case.
_________________________
Yaris 1.0 201mkm 5W40 ACEA A3/B4
Kangoo 1.5 DCi 15W40 ACEA E7
Wife's Koleos 2.0 dCi DPF 6AT eco-map 162mkm 5W40 C3

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#4609144 - 12/20/17 09:10 AM Re: AWD: driving with bad rear diff in 2WD (FW) mode ? [Re: Superflan]
supton Online   content


Registered: 11/09/08
Posts: 11995
Loc: NH
Well, looks like the oil made it to the end of life for that diff. So it was a lifetime fluid, eh?

If it's knocking then I'm guessing it'll eventually go. But if it's noise free in 2WD... perhaps you can just avoid using 4WD unless it's actually needed.

Question: is this a part time or full time AWD system? I have heard of some trucks having a proper center diff and "auto 4WD" will leave the center diff unlocked: but I thought most "AWD" vehicles simply did not use any user-selectable switch for 2WD.

I'm a little concerned if you left it in 4Hi "all the time" and thus this is wear coming from drivetrain binding.
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