front end trouble

[mounties83]

i have been noticing that when i park my truck on a hill facing down the hill and i start it up and start to drift forward something shifts forward with a huge clunk. im thinking its the front end. and also i was parked facing down a hill and was backing it up in four wheel driving i start to back up and there is just a huge bang and the font end started clicking like the the ring and pinion were skipping? any input would be great of what is happening and a fix.

 

[TrexMex]

i have been noticing that when i park my truck on a hill facing down the hill and i start it up and start to drift forward something shifts forward with a huge clunk. im thinking its the front end. and also i was parked facing down a hill and was backing it up in four wheel driving i start to back up and there is just a huge bang and the font end started clicking like the the ring and pinion were skipping? any input would be great of what is happening and a fix.

Check your radius arms for tightness..... That's a start, I used to have a clunk when going from a stop and it turned out my left radius arm got a little loose after the last time I went wheeling.