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5-1
GROUP 1 STRUCTURE AND FUNCTION
SECTION 5 STEERING SYSTEM
1. OUTLINE
Hyd gear pump
Steering unit
Steering wheel
Steering axle
Steering cylinder
Test coupling
Hyd tank
Hyd oil
filter
20BC7SS01
The steering system for this machine is composed of hydraulic gear pump, steering wheel assembly,
steering unit, steering cylinder, steering axle and pipings. The steering force given to the steering wheel
enters the steering unit through the steering column. The required oil flow is sensed by the function of
the control section of the unit, and pressurized oil delivered from the hydraulic gear pump is fed to the
steering cylinder. The force produced by the steering cylinder moves the knuckle of steering tires
through the intermediate link.
The axle body is unit structure having steering knuckles installed to its both ends by means of king pins.
Hub and wheel are mounted through bearing to spindle of knuckle.