Komatsu PC350LC-8, Operation & Maintenance Manual

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HIGH REACH DEMOLITION MANUAL
INSTALLATION AND REMOVAL
7-45
PURGING AIR FROM HYDRAULIC DRIFT PREVENTATIVE VALVE PPC CIRCUITS OF MID
LINK AND ARM CYLINDER.
7
REMARK
Purge air in accordance with section "Purging air from hydraulic
drift preventative valve PPC circuit of boom cylinder."
1. Connection of hydraulic drift preventative valve PPC circuits
of mid link and arm cylinders.
q
For details of hose connections of the long boom PPC circuit,
see the parts list.
1 - Mid Link Safety Return Line.
2 - Boom Safety Return Line.
3 - Arm Safety Return Line.
2. Installation to mid link cylinder.
q
Connect hose 5 in Figure 2 to hose 6 in Figure 3, then purge
air.
3. Installation to arm cylinder.
q
Connect hose 2 in Figure 2 to hose 8 in Figure 4, then purge
air.
Figure 1. Line on machine main body
Figure 2. Drain Line
Figure 3. Mid link PPC line
Fig 4 Arm PPC line