Balance shaft chain tensioner removal
I only replaced the broken plastic piece, slides off the metal mount that bolts to the bottom of the balancer.
You have to remove the top plastic guide, the crankshaft woodruff key, then the gear on the crankshaft that the counter balance chain goes on, with the chain. Then you can get the broken pieces out.
Once the chain and broken tensioner pieces are out of the way you just slide the new one on the metal post. Then put the chain on.
I have heard of people bending the post but I didn't have to, the tensioner slid right in there. I did this on my 1998 4 door about 100,000 miles ago, probably time for another one on that truck.