Hi all,
I've searched through the forums and I didn't find anything on this, but we've had our 2006 CRD for about 5 years now ( love it ) and it's been very reliable, with one exception.
The clutch that's in the alternator pulley. The fact is, I end up replacing the alternator annually.
The first one came from a Jeep dealer. The second one came from Advance Auto parts and had a lifetime warranty. I've used that warranty to replace it three more times, the latest being earlier this week.
It's not costing me anything, now that I have a lifetime warranty, but it's kind of a PITA and I'd like to not have to make this a fall ritual.
Is anyone else seeing this problem, or perhaps have a suggestion as to what's causing this issue? The tensioner pulley seems to be fine and the tension on the belt seems fine as well.

Thoughts?

Thanks!

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2006 Liberty CRD - GDE Eco-Tune, OME lift, R-R UCA & Supersliders. Full Skid Row armor, Powertrax rear locker, 245/75R16 KO2's.

ID get a new clutch, this is from a previous post, which includes the updated litens clutch:

-68009879AB alternator decoupler pulley Litens updated (PN 920834available from Advanced Auto at $78) that is internally greased.

I hear that this won't fail as the old one does. But of course this is up to you being willing to shed some extra money.

My advance auto alternator failed miserably in less than 6 months, the clutch was good but I guess some diodes broke, as my lights were flickering. I traded it in for an Autozone one, hoping it will be have better... Still have it new in the box. Now I use the stock original alternator with a new Litens pulley (not the updated). Back in the day my alt decoupler went bad, advance auto only had the rebuilt w/o core trade in, luckily, since I ended up keeping a good alt and getting a new pulley.
 
 
 

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2005 kj CRD, samco, suncoast tc, provent, Kennedy lift pump, GDE ECO full torque, 2nd gen filter head, 245/70/16 a/t tires, mopar light bar, fumoto oil valve, OEM Skid Plates, ARB Front bumper and HD OME, tru cool LPD47391 40k GVW tranny cooler (stock cooler delete), FF Dynamics e-fan and shroud, rocker arms replaced, HDS2 190F thermostat.

I googled the part number (68009879ab) and came up with a transmission pump (no longer available).

The Advance Auto part number (920834) that you gave is correct for the Litens decoupler pulley.

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My collection of CRD's:
2005 Deep Beryl Green Pearlcoat
2006 Light Khaki Metallic Clearcoat
2006 Inferno Red Crystal Pearlcoat
2006 Midnight Blue Pearlcoat
2006 Gold Limited
2015 Black Ecodiesel
2015 Black Ecodiesel 2

Then sorry guys for disinformation, I haven't checked the mopar part. But I did get the Litens from advance auto. Probably useful for some, but quite expensive in my opinion...

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2005 kj CRD, samco, suncoast tc, provent, Kennedy lift pump, GDE ECO full torque, 2nd gen filter head, 245/70/16 a/t tires, mopar light bar, fumoto oil valve, OEM Skid Plates, ARB Front bumper and HD OME, tru cool LPD47391 40k GVW tranny cooler (stock cooler delete), FF Dynamics e-fan and shroud, rocker arms replaced, HDS2 190F thermostat.

Use $25 off coupon at Advance Auto and price drops to $55!

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'06 Liberty CRD Limited. Bought at 91K miles.
ARP studs, New rockers, Stant inline tstat, Weeks 1&2, Provent, IDParts Silicone hoses,
2-1/2" Full OME lift, Timing belt, Water pump, TransGo kit, Plastic fan, Fumoto
2nd gen fuel head with 2nd stage 2 micron filter, in-tank lift pump, G2 Rear Diff Cover

Good info but couldn't use it bc I think you're limited to once or twice a year. But for whoever wants it, I think a Google would reveal the code. I use it as often as I can.

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2005 kj CRD, samco, suncoast tc, provent, Kennedy lift pump, GDE ECO full torque, 2nd gen filter head, 245/70/16 a/t tires, mopar light bar, fumoto oil valve, OEM Skid Plates, ARB Front bumper and HD OME, tru cool LPD47391 40k GVW tranny cooler (stock cooler delete), FF Dynamics e-fan and shroud, rocker arms replaced, HDS2 190F thermostat.

To get back to the original question , I too seem to go through alternators. I'm on my third one in 5 hrs under the lifetime warrantee. The clutches don't fail. The alternators just crap out.

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05 CRD Sport, Inferno Red (240K miles, Jan 2016)
Westin Brush Guard, Hella 500, Hidden Hitch
Magflow Muffler, ProVent CCV, Fumoto Valve, ORM
OEM Skids and Rails, EVIC, Mr Diesel Fuel Pump
Michelin XTerrains 235/70/16

Meant to type yrs, not hrs in above reply.

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05 CRD Sport, Inferno Red (240K miles, Jan 2016)
Westin Brush Guard, Hella 500, Hidden Hitch
Magflow Muffler, ProVent CCV, Fumoto Valve, ORM
OEM Skids and Rails, EVIC, Mr Diesel Fuel Pump
Michelin XTerrains 235/70/16

You got the Autozone or advance auto one? My advance auto broke in less than a year, decoupler looked like new, I took it out before returning it. Now I'm on the original with new decoupler. Been using it since 2013.

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2005 kj CRD, samco, suncoast tc, provent, Kennedy lift pump, GDE ECO full torque, 2nd gen filter head, 245/70/16 a/t tires, mopar light bar, fumoto oil valve, OEM Skid Plates, ARB Front bumper and HD OME, tru cool LPD47391 40k GVW tranny cooler (stock cooler delete), FF Dynamics e-fan and shroud, rocker arms replaced, HDS2 190F thermostat.

See my original thread on the subject.

Yes, I bought it at Advanced Auto from the advice Litens gave me. It still works great with no red rust like the standard decoupler.

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