I am wonder about my 78 bronco,u jiont drive ,shaft or differentail is gone not sure,can you help?
I have a lifted 1978 ford bronco it was making clicking sound brought to a mechanic he said it was u joint ,so changed u joint,about 2 weeks after drove to store And u joint popped right out,so got another cause had some young guy change it,so took drive shaft off and put it in 4H she drove home fine.I put other u joint in and after put it in put back in gear and she wouldn%26#039;t move forward made like all my tires are seized ,so took drive shaft of again and she drives fine,so my ?is could it be drive-shaft seized or ,could be my differential? cause in 4h she drives fine so want to know also if my back differential was screwed would she make a sound when driving if differential was gone?|||If all four wheel roll it can not be that either or one of the differentials are seized. Test this for two reasons: Put the truck on jack-stands and remove the drive-shafts. Twist the yokes that come out of the rear ends. If the two wheels turn, the ring and pinions must be OK. When you %26quot;lift%26quot; a short wheel base vehicle universal joints take a terrible beating. The correct terminology is input and output speed which is *different when you have a lot of U-joint angularity because of the %26quot;lift%26quot;. Guess what happens next: With a severe rear U-joint angularity the rear wheels are trying to run at a slightly different speed than the front universal joint on the same drive-shaft. You know already what parts crap-out first.
Inspect the U-joint clearances carefully. Make darn sure normal suspension travel isn%26#039;t causing the joints to bind. You%26#039;ll see marks on the ends of the drive-shaft, front slip joint and rear end/s yokes.
If all clearances are adequate, nothing in the world beats Spicer universal joints.|||you may want to check the angle of your drive shaft if its lifted you could have to much of an anle on the drive shaft and it could cause it to bind up
