1. Shirkadda Yijiang waxay ku takhasustay soo saarista rollers Morooka muddo 18 sano ah. Rollesr-ka waxaa loo soo saaray heerar aad u sarreeya;
2. Waxaan ku siin karnaa qaybo chassis Morooka, oo ay ku jiraan rullaluistemadka hoose ee track, idler hore, sprocket, . rullaluistemadka sare iyo caag / track bir;
3. Alaabtayadu waxay u dhoofiyaan Yurub iyo Maraykanka, tayada ayaa si buuxda loo aqoonsaday macaamiisha