i'm about to take my '62 mopar 8 3/4 rearend apart to replace the yoke. does anyone have a good source for detailed instructions, or diagrams on how to do this the easiest way?
rearends are'nt my specialty. i want to know how it comes out before i do any extra work. saying i don't need to tear it apart does'nt really help me. NEXT!
AS LONG AS the housing casting number doesn't end with "489" you can change the yoke without removing the differential from the housing. The 489 case was used on 1969 and later cars and shouldn't be on a 1962 rearend - unless someone did a swap at some time. Since the pinion bearing preload is set with shims between the pinion bearings (on all but the 489 case), one can simply remove the yoke and install the replacement yoke without affecting the pinion bearing preload setting. I would remove the nut (I think it is 1-1/4") with an impact wrench. If you need to keep the yoke from rotating, a pipe wrench on the yoke works well. I recommend replacing the pinion oil seal at this time. When installing the new yoke, be sure to properly retorque the nut to 200-240 ft-lb. If the pinion nut loosens, the axle will eventually self-destruct. The yokes come in two popular sizes - the 7260 U-joint which is 2-1/8" between the snap rings, and the 7290 U-joint which is 2-5/8" between the snap rings. There is another rarer version which I think is a ****er 1310 and it was used with CV joints like on the Imperials. If the case has a big "9" on the side (the "489" case mentioned earlier), the pinion bearing preload is set by a crush sleeve. This animal is completely different and therefore needs to be handled very differently. Reply if you have one of those 489 cases or any other questions.
thanks dodgeboy. that's the type of info i was looking for. i'm pretty sure i have a 742 case. if not i'll pm you for more info.
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