Takeuchi TB 250, Руководство по ремонту

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3-22
3
SLEW MOTOR
FUNCTION
The rebound pressure also pushes the check valve (1) to
the left, which is the opposite direction when braking. The
flow control valve built in the check valve (2) (that is now
on the lower pressure side) releases the oil in the damper
chamber (4) at a constant flow rate. Therefore, the check
valve (1) moves at a constant speed
When the check valve reaches its stroke end, the passage
from the port Pv2 to the port Cv is closed.
Parking brake
The cylinder block (1) and the disc (1) are connected through
the spline. The disc (2) is pushed between the brake piston
(4) and the case (5) by the spring (3), and a brake force is
generated by this arrangement, which is stopping the cyl-
inder block (1) from turning.
When the oil is directed from the parking brake release port
to the brake piston chamber (6), the oil pressure overpow-
ers the spring force and moves the brake piston (4) to the
left. This generates a clearance between the disc (2) and
the case to release the parking brake function.
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