My 620 has started a clicking sound from what sounds like the rear of the truck. This clicking only happens when under load and only when going forward. if I feather the throttle starting off/or when sustaining speed/or lift off throttle it doesn't do it, and if I start in second and punch it, it sounds louder.
what have I done to the truck recently: I put 3" lowering blocks in it, put a 1" spacer under carrier bearing.
Also my wife was making fun of my truck the last time I drove it so I did a wee little brake stand, and after reading this thread
http://community.ratsun.net/topic/20939-differential-is-stuck-any-ideas/page__p__294630__hl__%2B620+%2Bdiff__fromsearch__1?do=findComment&comment=294630
I thought maybe I blew my rear end, so I pulled it apart, nothing appeared to be damaged so I brought it to my father inlaw (bigger gear head) his diagnosis was that it wasn't the problem.
other minor problems with truck; about 1mm play in rear universal (play seemed gone when I greased it, sound continued, so have new one on order), carrier bearing rubber has a small tear in it (on order).
So any suggestions? am I missing something in the diff?
Next I'm gonna look at the axle/wheel bearings, but I am lost!