STEERING
L3301, L3901, L4701, WSM
7-M2
[2] HYDRAULIC CIRCUIT
Control valve (4) is main part of Integral type power steering. Oil sent from hydraulic pump (7) flows in gear case
through control valve (4) and moves ball nut (piston) (2).
9Y1211012STM0002US0
[3] HYDRAULIC PUMP
The gear type hydraulic pump is adopted for these
models. This pump is called as tandem type and
composed two pair of gears, side plates, bushings and
other components as shown in the figure.
The hydraulic pump pressurize oil from transmission
case through oil filter and send the oil to power steering
circuit and main hydraulic circuit.
9Y1211012STM0003US0
(1) Sector Shaft
(2) Ball Nut (Piston)
(3) Worm Shaft
(4) Control Valve
(5) Relief Valve
(6) Steering Wheel
(7) Hydraulic Pump
(8) Transmission Case
(A) To Hydraulic Pump
(Manual Transmission
Model)
(B) To HST Unit (HST Model)
(1) Drive Gear 1
(2) Coupling
(3) Drive Gear 2
(4) Driven Gear 1
(5) Bushing
(6) Bushing
(7) Driven Gear 2
(8) Side Plate
A: From Power Steering
Controller
B: From Transmission Case
C: To Power Steering
Controller
D: To Main Hydraulic Circuit