2-Way Restrictor Valve - Komatsu WA250-6 Shop Manual

SEN03827-01

2-way restrictor valve

1. Tube
2. Poppet
3. Body
Function
In order to buffer the impacts resulting from the
q
momentum of the machine when switching the
steering, an orifice installed in the circuit near
to the cylinder controls the move of the cylinder
piston by giving pressure to the return oil.
Operation
When flowing in the left direction (in the cylin-
q
der's forward move direction), the oil pushes
open poppet (3), and flows from orifice (a) and
notch (b) of poppet (3).
16
10-300
When flowing in the right direction (to the cylin-
q
der's return direction), the oil conducted
through orifice (a) of poppet (3) alone, thus the
flow rate is restricted.
300 Steering system

2-way restrictor valve

1
WA250, 250PZ-6