Takeuchi TL150 Workshop Manual

IV-113
HYDRAULIC UNITSTRAVEL MOTOR
Parking brake
The friction disc (2) and the disc (1) are connected
through the spline. The friction disc (2) and the disc
(1) are pressed against the flange holder (6) by the
springs (4) via the brake piston (5). The friction
force between these discs generates the brake torque
to prevent the cylinder block (3) from rotating.
When the pressure oil is introduced into the motor,
the oil flows from the parking brake release port (7)
into the brake piston chamber (8). The oil pressure
overpowers the spring force and moves the brake
piston (5) to the right. This generates a clearance be-
tween the friction disc (2) and the disc (1) to release
the parking brake function.
Once the motor stops, no pressure oil flows into the
parking brake release port (7) and the parking brake
force is operated by the spring (4).
Flushing valve
This valve is used to replace the oil in the closed
circuit with new oil to prevent the oil temperature
from increasing and to remove contaminants from
the circuit.
When the machine is stopped, no pressure is gener-
ated in the motor port and thus the plunger (1) is
held at the neutral position by the spring (2).
At this time, the oil passage to the low-pressure re-
lief valve (3) is blocked.
When traveling, if the pressure oil from the pump
flows in the motor pump, the oil enters the chamber
A.
When the pressure of the chamber A becomes higher
than the set value, the plunger (1) moves to the left
to open the passage to the relief valve (3).
When the oil in the motor port becomes higher than
the set value for the low-pressure relief valve (3),
part of the oil in the closed circuit returns to the tank
from the low-pressure relief valve (3).
When this occurs, the oil in the closed circuit be-
comes insufficient, and thus the new oil is supplied
to the closed circuit from the charge pump to replen-
ish the oil that has returned to the tank. Therefore,
the oil in the closed circuit is continuously replaced
with new oil.
3MAA04Z
123456
3MAA05Z
124578
3MAA06Z
1
2
3
3MAA07Z
1
3
A

Takeuchi TL150 Specifications

General

Travel Speed - High	11.2 mph (18 km/h)
Max Travel Speed	12.4 km/h
Width	1880 mm
Height	2320 mm
Lift Height	10.5 ft (3.2 m)