CUCV U joints

[l1a1man]

Have broken several u joints in my M1009 on the rear shaft where it goes into the Diff. Are they a diffrent size than standard civilian ones?

 

[DrJekl]

I asked for K5 joints when I replaced mine, no issues.

 

[dstang97]

Time to upgrade to 1tons and bigger driveshafts.

 

[Cucvnut]

get a 14FF it will help.

 

[mikev]

Have broken several u joints in my M1009 on the rear shaft where it goes into the Diff. Are they a diffrent size than standard civilian ones?

Can you detail what or why they broke?

I haven't replaced mine (OEM ones with 53K miles) and wonder what breaks them besides no PMCS or hard off-roading...

 

[KsM715]

OK let me first say that I do not own a CUCV so I m not familiar with where the slip joint is (on the shaft or on the transfercase). When you break the u-joint, did your shaft come apart at the slip joint (if the SJ is on the shaft) if your shaft comes apart make sure when you reassemble it you get the u-joints in phase with each other (lined up) or you will keep tearing them up.

If this is already being taken care of, disreguard and carry on.

 

[ODdave]

Subscribing because i would like to know how the joint failed.

if you are intent on keping the 10 bolt, you can get a rear drive shaft & pinion yoke from a chevy pickup w/ 9.5 14bolt, have the shaft cut down and bolt it all in. This will give you a 1350 joint which is a lil bigger than the 3R joint thats in it.......Just a thought.