Routine Maintenance
Hydraulic System
242 242
9811/9950-1
Releasing the Hydraulic Pressure
1 Make the machine safe with the boom lowered. Refer
to Prepare the Machine for Maintenance.
2 Operate the controls to remove the hydraulic
pressure from the service hose lines:
a For manually operated services, operate the
controls (several times) of the service(s) to be
disconnected.
b For electrical services, turn the starter key to the
ON position.
Operate the controls (several times) of the
service(s) to be disconnected. Set the starter
switch to the OFF position then remove the starter
key.
c Press the relevant console switch (to make the
relevant service active). Refer to Operation
Section.
Important: To release the hydraulic pressure from the
electrical and servo operated services the battery must be
connected while you operate the controls.
3 Carefully remove the hydraulic tank filler cap to vent
residual tank hydraulic pressure.
4 Install the hydraulic tank filler cap.
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