STEERING SYSTEM OF WORKING TRUCK

摘要

Among mode lamps (38a, 38b, 38c) of a mode (38), a lamp corresponding to the current steering mode is lighted in yellow and other lamps are lighted in green or unlighted thus indicating whether front wheels (1, 1) and rear wheels (2, 2) are in neutral position or not. A controller (39) does not operate a mode switching valve (24) even if so designated by a mode changeover switch (35) when the front and rear wheels are not in neutral position but operates the mode switching valve (24) into a steering mode that agrees with a designation from the mode changeover switch (35) when the front and rear wheels are in neutral position. Furthermore, a steering mode corresponding to that of the mode switching valve (24) is displayed constantly as a current steering mode on the mode display (38). A highly reliable steering system exhibiting excellent operability can thereby be provided for a working truck where the steering mode of front and rear wheels can be switched between two-wheel steering and four-wheel steering.