Front Drive Shaft Update

[acky]

Hi All, been reading watching for awhile.
Mine failed 24 Trailmaster, 17000k's Eibach lift (35mm) all done at Expedition HQ when the vehicle was new (i suspect pre-delivery, i bought it used)
managed to get a new one done under some deal worked out between ExpHQ, Ineos and the local dealer
this was approx 5000k's ago, no sign of failure as yet, i have done a few weekends mild to hard 4wding

I was advised when it was replaced that this wont happen again, i wont say by who but they hinted at a new rubber design.
Still makes me nervous though and i check regularly

I have a big trip coming up to the Vic High country at Christmas, im thinking about grabbing a jeep JL\JT Rzeppa joint as a spare
are these still the best option?

 

[Tazzieman]

I have a big trip coming up to the Vic High country at Christmas, im thinking about grabbing a jeep JL\JT Rzeppa joint as a spare
are these still the best option?

Seems so, with reservations re the fit on the splines. See post #519 in this thread

 

[NQ94]

Everyone is conerntrating on the static driveline angle as the contributing factor to the CV failures and correctly so, but are there other issue that need to be considered and added into the equation like CV lubricant type, excessive heat transfer or operational powertrain movement under load or in certain driving scenarios also playing a part in the CV failure?
Placing a few temperature recording decals in critical areas may assist. This give a visual reference to service departments and owners a way of quickly checking for any impending issues.

 

[Tazzieman]

Surely they selected high temp cv grease?

 

[NQ94]

Surely they selected high temp cv grease?

Yes, it will be a lithium soap based with mineral oil grease they use because it is the most cost effective CV grease to suit all CV applications on the production line.
The main factor for a CV is the extreme pressure (EP) additive required which is commonly molybdenum disulphide (moly) with the addition of graphite. Moly grease generally comes in 2 3 5% or more. Cv grease is around 3% any higher the balls in the cv will likely start skidding because molybdenum disulphide can act like a wheel chock if there is excessive amounts in roller elements of bearings.

 

[Dokatd]

Everyone is conerntrating on the static driveline angle as the contributing factor to the CV failures and correctly so, but are there other issue that need to be considered and added into the equation like CV lubricant type, excessive heat transfer or operational powertrain movement under load or in certain driving scenarios also playing a part in the CV failure?
Placing a few temperature recording decals in critical areas may assist. This give a visual reference to service departments and owners a way of quickly checking for any impending issues.


View attachment 7913357

I bought temp indicator paint just for this. But then I used my IR gun and found the temps are nowhere near what's needed to fail the boot.