If installed the other way you most likely won't be able to access the grease fitting in order to grease it without removing the driveline.
CK5
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Installing a new u joint?
- Thread starter bassackwards
- Start date
If installed the other way you most likely won't be able to access the grease fitting in order to grease it without removing the driveline.
I see. An accesability issue, not strength. Makes sense. Thanks .
For anyone wanting the little extra strength then use a non-greaseable u-joint otherwise just buy a quality u-joint (Spicer) and you're good. The only time I've ever seen a greaseable u-joint fail is if it never got greased, the only other time I've seen either type of u-joint fail is when the working angles weren't set correctly.
Most people don't understand that the u-joint on each end of the shaft have to have the same working angle otherwise one u-joint moves faster than the other through the arch and that is what makes a u-joint fail because it causes a vibration (sometimes not detectable). Also there needs to be a minimum of .5* and no more than 3* working angle otherwise the troubles start. This is all assuming a single driveline.
bassackwards
1/2 ton status
If I install the zerk facing the driveshaft it will be under compression so that's good. Looked easier to access facing the axle though, that's why I asked
I don't think it amounts to a hill of beans in actual use which way the grease fitting faces as far as strength--I've had u-joints with them installed both ways and have never had one break,despite doing a lot of burnouts and second gear chirps in some of my big block powered vehicles,and I often bought "cheap" U-joints like Amgauge and Valuecraft Auto Zone ones..
In my years of experience of selling auto parts I cant say I ever had a customer break one either..I suppose extreme off roading abuse may break an axle u-joint,but ones on drive shafts usually only fail after they lose all the needle bearings and wear the "cross" out enough to eat away at the cups and let it pull free..
I found it strange the Valucraft U-joints have a 2 year limited lifetime warranty--but the wheel cylinders I bought at the Zone in the same brand had only a 90 day warranty!..(the one I replaced was a Valucraft, only about 2 years old and had 5000 miles before it began leaking )...they used to be "unlimited lifetime",I guess so many failed early they decided to reduce the warranty..
In my years of experience of selling auto parts I cant say I ever had a customer break one either..I suppose extreme off roading abuse may break an axle u-joint,but ones on drive shafts usually only fail after they lose all the needle bearings and wear the "cross" out enough to eat away at the cups and let it pull free..
I found it strange the Valucraft U-joints have a 2 year limited lifetime warranty--but the wheel cylinders I bought at the Zone in the same brand had only a 90 day warranty!..(the one I replaced was a Valucraft, only about 2 years old and had 5000 miles before it began leaking )...they used to be "unlimited lifetime",I guess so many failed early they decided to reduce the warranty..
