I usually use militec grease. Right now im running some high temp grease, dont remember the name.
My AC condensor destroys my U joints.
- Thread starter christheroverguy
- Start date
Well, a 2" lift is one thing, but your sig says 3" lift.
If you've got wide-angle joints, they should cope, but have you looked to see if the shaft is bottoming out on the sliding joint while going over severe bumps? That would transfer a lot of shock to the first joint above it, which is the one you say seems to be failing.
Most folks get very high mileage on standard shafts, even with a mild lift, and like the rest of the guys I can't see water being an issue, if it was, you'd be looking at rust damage which would be pretty obvious.
We use regular Castrol HMP grease for all the joints on both of our D2's and the Defender CSW in the family.
My 2p worth, or 2c in your country.
Peter
If you've got wide-angle joints, they should cope, but have you looked to see if the shaft is bottoming out on the sliding joint while going over severe bumps? That would transfer a lot of shock to the first joint above it, which is the one you say seems to be failing.
Most folks get very high mileage on standard shafts, even with a mild lift, and like the rest of the guys I can't see water being an issue, if it was, you'd be looking at rust damage which would be pretty obvious.
We use regular Castrol HMP grease for all the joints on both of our D2's and the Defender CSW in the family.
My 2p worth, or 2c in your country.
Peter
christheroverguy said:
Wait.... You have a double-double cardan???.. Like this??
On a 2" OME lift????? What angles did you measure???????
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I actually do have a 3" after you pointed that out. I do have that exact shaft, i thought the angle was too big and causing the failure. I know its an overkill but its one of the troubleshooting steps I took. I measured the distance between the dif and transfer case after the lift and gave that measurement to Tom Woods. I dont ever hear anything bottoming out when I go over bumps.
christheroverguy said:
That drive shaft is not meant for what you're doing.... Which may be part of your issue. What is your pinion angle???
You can try routing your ac condensor like elsewhere but I have a feeling that isnt going to fix your issue.. I think there is still more to the story..
I have considered having TWs rebuild it to be a regular prop shaft. Ill measure the angle tomorrow and post it. Im just tired of replacing u joints. It started at 40,00 miles and I now have almost 200,000 miles on t.
For future reference: the condenser is in the front of the truck, behind the grille, has a little electric fan mounted in front of it (two fans on a D1) and the radiator behind it. The EVAPORATOR is what you are referring to.
A regular ujoint/ujoint driveshaft won't cut it. You need a ujoint/double cardan like what you had.christheroverguy said:
Maybe the output bearing on your TC is bad, IDK. But it definitely seems like there's more going on here.
I even had the dealership check the output bearing. Still good. Im getting to the point to where I want to get rid of it.
for starters, the a/c drain on discos, are located on the sides of the tunnel which means condensation by product, dripps on to the trans sides just behind the bellhousing...
water ingress to the u joints.. you claim another posibility is from the road... impossible since the momment you are traveling down the road that shaft is spinning, physics does not allow for ingress but rather egresses anything in it.. how much do you off road?, have you considered the type of of terrain where you off road.?... swampy perhaps?.. just for maintenance grease those joints as soon as you get home from an off road expedition.
lastly the type of shaft.. you should not have more than 3 degrees of angle between pinion and tcase... the shaft is overcompensated you have one too many doubles (velolicty joints).. may I suggest using something similar to a factory unit.
another suggestion is to find and visit a local driveline specialty shop of your choosing and listen to their solution...althou it may not be what you may wanna hear...
water ingress to the u joints.. you claim another posibility is from the road... impossible since the momment you are traveling down the road that shaft is spinning, physics does not allow for ingress but rather egresses anything in it.. how much do you off road?, have you considered the type of of terrain where you off road.?... swampy perhaps?.. just for maintenance grease those joints as soon as you get home from an off road expedition.
lastly the type of shaft.. you should not have more than 3 degrees of angle between pinion and tcase... the shaft is overcompensated you have one too many doubles (velolicty joints).. may I suggest using something similar to a factory unit.
another suggestion is to find and visit a local driveline specialty shop of your choosing and listen to their solution...althou it may not be what you may wanna hear...