7-M3
M6800 · M6800S · M8200 · M9000, WSM
STEERING
3. POWER STEERING SYSTEM HYDRAULIC PUMP
The power steering system hydraulic pump pressure-
feeds the oil sucked from the transmission case to the
steering cylinder through the steering controller.
The hydraulic pump is driven by the idle gear.
W1012937
Q Operation of Hydraulic Pump
The hydraulic pump has two meshing gears (2), (3)
whose teeth run close to the casing (1). One gear is a
drive gear (2) which drives the driven gear (3).
When the drive gear is driven in the direction of the
arrow by the crankshaft, the gears trap oil between the
gear teeth and the casing. The trapped oil is carried
around to the outlet. The higher the engine speed, the
more the pump discharge.
W1013098
(1) Power Steering System
Hydraulic Pump
(2) Three Point Hydraulic System
Hydraulic Pump
(3) Cover
(4) Housing
(5) Flange
(6) Driven Gear
(7) Key
(8) O-ring
(9) Oil Seal
(10) Bushing
(11) Seal Element
(12) Backup Element
(13) Drive Gear
(A) Individual Flow Type
(B) Combined Flow Type
(1) Casing
(2) Drive Gear
(3) Driven Gear
A : Outlet
B : Inlet
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