In accordance with a particularly useful feature of the invention, the hydraulic cylinder 52 of the refusecompacting plunger 50 is usefully provided with flexible fluid hoses 65 and 66 fitted with quick-disconnect couplings 67 for coupling to mating couplings 68 on hoses 69 and 70 extending from the aforementioned fixed hydraulic pressure system 59 so that the refusecompacting plunger 50 can be op