Yanmar ViO80-1A, User Operation And Maintenance Manual

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2 M
AINTENANCE PRECAUTIONS
CAUTION
No maintenance operations described in this guide are to be performed with the engine
running; please refer to the Maintenance Manuel for any other operation.
2.1 Precautions before maintenance
2.1.1 Removing the residual pressure
Before performing any maintenance operation, remove residual pressure in the hydraulic circuit.
1. Perform the machine's parking operations.
2.4 Parking precautions , page 80
2. Turn the key to the OFF position to stop the machine's engine, then turn it to the ON
position.
Note
The locking lever must be lowered.
3. Handle the following controls several times to remove the residual pressure:
• Left command lever (Arm & Rotation of the upper part )
• Right command lever (Boom & Bucket )
• Blade lever
• 3rd hydraulic circuit control
(P.T.O. 1)
4. Stop the engine by turning the key from ON position to OFF position.
5. Remove the key from the ignition.
The residual pressure in the accumulator is removed and there is no more pressure in the hydrau-
lic circuit.
2.1.2 Place a warning label
WARNING
Do not operate the control lever during servicing.
Maintenance personnel may be seriously injured.
Place a MAINTENANCE IN PROGRESS label on the machine and on the joysticks.
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