for the few and proud 2100 owners I have now studied and learned about the hydraulic steering system on the 2100. here's the scoop in the 2100's steering (mike listen up because from what I have found all diesels used the twin cylinder system). Thiokol used 2 systems one was two levers and 1 master cylinder ,for dead stick braking. the other system used dual cylinders. the hydraulic oil is dropped to 500 psi through a regulator valve than runs through a divider valve than to each steering valve, from there it goes to the back to the return when a lever is pulled it closes off the return and applies pressure to the slaves. on the single master cylinder systems there is a shuttle valve and supply off the hydraulic system to feed it the shuttle valves work like a hydraulic diode letting oil flow from one valve or the other. on the twin cylinder models it flows to both masters than to the slaves. here is the importance I had a master cylinder stick what happened next sucks as bad as the rest of my Sunday trip my steering on left side disappeared but the left valve seemed stiff all the time I couldn't figure it out. until I talked with snow cat pat today. I bypased the cylinder and now it works like a charm steering to the left still sucks so I pulled the cover because of the dragging brake ,and a 130 mile trip I now have to purchase a band for it to .I know one is supposed to take the chunk out to replace the bands but it looks to me like I can do it with out a complete tear down those who have the experience please chime in.