差动转向润滑油室
differential steer lube oil compartment
反冲弹簧润滑油室
recoil spring oil compartment
分接开关油室
oil cabinet of tap switches
辅助制动松放油室
secondary brake release oil chamber
停放制动器松放油室
parking brake release oil chamber
停放制动器油室
parking brake oil chamber
行车制动器油室
service brake oil chamber