the leak appeared to be coming from the output shaft side, the other side was completely dry. The other steering box threads have lost all the photos so I'm trying to get my head around what's what. Are the seals under dust caps or are the dust caps something else? In this pic of input shaft , although it doesn't seem to be leaking the rubber is cracked. Replace or not? Is the cracked bit the seal or a dust cap? Output shaft where leak seemed to be from, is the black bit the seal or a dust cap?