If I ever find the 3rz im looking for id like to replace the balance shaft bearings as general maintenance if its not to much trouble, before it goes in my truck. I was looking at a crapy taco manual and it looks like the front bearings can be changed through the front of the motor by removing the water pump, timing cover ect. is that correct? Now, im assuming the balance shafts must have rear bearings? how do you get to those? can someone clear this up for me ? does changing these bearings pretty much require a lower end rebuild or no?
