Attachment Operation - Toyota 7FBEF 15 Service Manual

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9. Attachment operation

When you operate the attachment lever, solenoid b3 is energized and the solenoid proportional valve
moves to the left. Then the pressure oil controlled by the pressure reduction valve flows to chamber (r)
on the left side and the spool moves to the right side.
Now the oil from chamber (s) drains out from 10 via the solenoid proportional valve.
The flow of the pressure oil after this is the same as for tilt operation.
Attachment operation (attachment section)
Attachment spool
(r)
Solenoid b3
Electromagnetic proportional valve
Tilt section
Outlet
Section V-V
(a)
Port C4
V
Main flow/excess flow
Pilot flow
Load check
Port C5
V
Electromagnetic proportional valve
10
(s)
Spring 9
Solenoid a3