Baroness LM331, Service Manual, Page: 30 / 165

Hydraulic System Layout
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Hydraulic System Layout_001
1 Wheel motor 2-160BS4S 6 Steering cylinder 11 Stack valve
2 Piston pump 7 Filler neck breather 12 Gear motor
3 Orbitrol 8 Wheel motor 2-200BS4S 13 Up/down cylinder
4 2WD/3WD changeover valve 9 Stop valve 14 Hydraulic oil filter
5 Inline check valve 10 Slow return valve 15 Oil cooler
Wheel motor 2-160BS4S
This converts the fluid energy from the pump
to mechanical energy (rotary motion) in order
to directly drive the wheel.
This is located at the front left and right tires.
Piston pump
This converts the mechanical energy of the
engine to fluid energy by using the
reciprocating motion of the piston.
This is located at the rear of the engine, near
the center. 1.
2.
Orbitrol
It sends oil from the hydraulic pump to the
steering cylinder by switching the internal
valve by the rotational input from the steering
in a fully-hydraulic power steering unit.
This is located at the center, inside the front
cover.
2WD/3WD changeover valve
Changing the direction of oil flow switches
between 2WD and 3WD mode.
This is located to the left side of the seat. 3.
4.
LM331
Hydraulic system
Page 4-4
Specifications