I own a 1995 chinese dozer, that has the 2 cylinder diesal engine, it was made by the Guilan forestrey association — but they only made about 50 of them a year, they were marketed under the name of Rhino in the USA, So I have not driven it for a year or so, and now when I drive it the left track Clutch does not “release” when I pull back on the control lever, so clearly the plates are either fused together or they can’t slide on the splines — so I am wondering how I would disassemble it and free it up