5-8
The steering unit is composed of the control valve(rotary valve) and the metering device. The control
valve controls the flow of oil from the pump in the interior of the unit depending on the condition of the
steering wheel. The metering device is a kind of hydraulic motor composed of a stator and a rotor. It
meters the required oil volume, feeds the metered oil to the power cylinder and detects cylinder’s
motion value, that is, cylinder’s motion rate.
When the steering wheel is turned, the spool turns, the oil path is switched and the oil is fed into the
metering device. As a result, the rotor is caused to run by oil pressure, and the sleeve is caused to run
through the drive shaft and cross pin. Therefore, when the spool is turned, the spool turns by the
same value in such a manner that it follows the motion of the spool. Steering motion can be
accomplished when this operation is performed in a continuous state.
If the hoses of the steering system are incorrectly connected, the steering wheel can
turn very rapidly when the engine is started. Keep clear of the steering wheel when
starting the engine.
The centering spring for the spool and sleeve is provided to cause the valve to return to the neutral
position. It is therefore possible to obtain a constant steering feeling, which is transmitted to the hands
of the driver. Return to the center position occurs when the steering wheel is released.
OPERATION
2)
Содержание 60L-7A
Страница 11: ...SECTION 1 GENERAL Group 1 Safety hints 1 1 Group 2 Specifications 1 5 Group 3 Periodic replacement 1 13 ...
Страница 25: ...SECTION 2 REMOVAL INSTALLATION OF UNIT Group 1 Structure 2 1 Group 2 Removal and installation of unit 2 2 ...
Страница 32: ...2 7 Mast Refer to section on mast Page 2 2 1 2 POWER TRAIN ASSEMBLY REMOVAL 1 D503RE04 ...
Страница 69: ...3 28 50DFTM13 Remove bearing 67 and gear 68 30 68 67 ...
Страница 71: ...3 30 Remove oil seal 72 from the transmission case 34 50DFTM17 72 ...
Страница 98: ...3 57 Assemble wheel hub and tighten plug 14 Tightening torque 35 60kgf m 253 2 434 0lbf ft 12 50D7EDA61 ...
Страница 147: ...5 31 2 PRIORITY VALVE STRUCTURE 50DS7ESE08 1 Body 2 Spool 3 Spring plug 4 End plug 5 Spring 6 O ring 7 Orifice 1 ...
Страница 188: ...7 3 10MM RING ELECTRIC CIRCUIT FOR LPG FUE KIT 35L7AEL07 ...
Страница 189: ...7 4 MEMORANDUM ...