S0709455K
Page 4
Main Control Valve (Toshiba)
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AJS0660L
Figure 2 Control valve hydraulic circuit
Reference
Number
Description
a3 Option Valve Port
a1 Bucket Crowd Valve Port
b2 Boom Down Valve Port
b3 Option Valve Port
b1 Bucket Dump Valve Port
a2 Boom Up Valve Port
f Float Valve Port
A1 Bucket Crowd Port
(to Bucket Cylinder Tube)
(1) Main Relief Valve
B2 Boom Lower Port
(to Boom Cylinder Rod)
B3 Option Cylinder Port
(to Option Cylinder Tube)
B1 Bucket Dump Port
(to Bucket Cylinder Rod)
A2 Boom Up Port
(to Boom Cylinder Tube)
P Pump Port
R Tank Port
A3 Option Cylinder Port
(to Option Cylinder Rod)
(2) Overload Relief Valve
(3) Anticavitation Check Valve
Reference
Number
Description
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