One of the problems I want to address this off season is the slack within my transfer case. I have some slack in the input gear/trans output shaft that I will also be addressing. With the front driveshaft removed and the diff lock engaged i can rotate the front flange approx 45 degrees with no movement in the rear shaft. I have checked several other boxes and they have no play at all in the same scenario. This causes a fairly loud clonk when taking up any gear or applying power from a decel. Any ideas as to what may be wrong internally? It is a 1.4 box behind a 200tdi.
84 110SW County LHD