A.閘瓦折斷 B.閘瓦插銷丟失 C.制動缸后蓋堵丟失 D.從板座破損
A.16號615mm B.13號590mm C.13號A585mm D.17型665mm
A.緊固螺釘 B.銷釘 C.軸肩 D.軸承前蓋