Arrangement For The Operation Of Optional Equipment; Selection Valve (1) - Komatsu PC27R-8 Operation & Maintenance Manual

6.3 ARRANGEMENT FOR THE OPERATION OF OPTIONAL
EQUIPMENT
The machine is equipped with an independent hydraulic circuit
for the operation of optional equipment that can be installed in-
stead of the standard bucket.
The oil flow in the circuit is controlled by a selection valve (1)
and a pedal (2) that controls the additional distributor provided
for the operation of the equipment.
Delivery and draining pipes for the oil necessary for the opera-
tion of the equipment are also provided as a fixed installation
and reach the coupling.

6.3.1 SELECTION VALVE (1)

This is a three-way valve and is used to change the direction of
the hydraulic oil flow.
Pos. A(Valve control completely rotated anticlockwise)
The oil returning from the equipment is directly deviated
to the tank outlet. This position is specific for the use of
the demolition hammer.
Pos. B(Valve control completely rotated clockwise)
The oil flow is deviated to the distributor, thus obtaining
the a direct passage between the distributor and the
equipment. This position is used for equipment with
double delivery (clamshell bucket, drill, etc.).

ARRANGEMENT FOR THE OPERATION OF OPTIONAL EQUIPMENT

RYA12280
2
1
B
A
1
RWA09400
RWA10160
191