See my profile. Imma CJ Guy,
I would start with a careful inspection of your "U" JOINTS (universal joints)
Park on level ground
CHOCK BOTH SIDES OF YOUR WHEEL (prevent rollage either way)
Put in Neutral
Go to rear axle area
Go under and grasp your driveshaft one hand. Yoke at differential with other.
Wring it like a wash rag both directions---you do not have to do it fast. Looking for "Slop"
There should be no movement between the 2 yokes, or the "+" in the center (NONE, not even teeny tiny slop is acceptable)
The Entire "U" Joint. Both yokes. Should move in Unison as if they were one part (if they are greased on regular intervals, they will last a long time, See Chilton or Haynes Manual for SCHEDULED MAINTENENCE)
NOW MOVE UP TO THE TRANNY END
Perform the same test.
If you have 4X4, you will do the front driveshaft the same way.
THIS MAY BE YOUR PROBLEM---Needing a New "U" Joint---maybe 2
On Jeeps--sometimes we get a BIG OLE GLOB OF MUD on the inside of our rim. This really throws balance out.
Also look for a CLEAN SPOT on your rim (outside and in) where you might have thrown a Wheel Weight
Sunday, August 29th, 2010 AT 8:25 PM