Page 33
Mast Seres - Servce & Parts Manual
May 2021
Secton 10 - Mantenance
Yearly Inspections
Inspection that is to be performed every year or every 1,000 hours.
1 - Test or Replace the Hydraulic Oil
Tools will be required to perform this procedure.
New parts will be required to perform this procedure.
Dealer service will be required to perform this procedure.
This procedure is to be performed every year or every 1,000 hours, whichever comes first.
Replacement or testing of the hydraulic oil is essential for good machine performance and service life.
Dirty oil may cause the machine to perform poorly and continued use may cause component damage.
Extremely dirty conditions may require oil changes to be performed more often.
Before replacing the hydraulic oil, the oil may be tested by an oil distributor for specific levels of
contamination to verify that changing the oil is necessary.
If the hydraulic oil is not replaced at the two year inspection, test the oil quarterly. Replace the oil
when it fails the test.
Note:
Perform this procedure with the platform in the stowed position.
Disconnect the battery pack from the machine.
Fully lower the platform.
Electrocution / burn hazard����� Contact with electrically charged circuits
could result in death or serious injury����� Remove all rings, watches and
other jewelry�����
Remove the cover.
Tag and disconnect the hydraulic pump outlet line and remove the line from the pump. Cap the
fitting on the pump.
Loose the bolt and remove the tank form the tray.
Remove the tank.
Drain all of the oil into a suitable container.
Bodily injury hazard����� Spraying hydraulic oil can penetrate and burn skin�����
Loosen hydraulic connections very slowly to allow the oil pressure to
dissipate gradually����� Do not allow oil to squirt or spray�����
Clean up any oil that may have spilled. Properly discard the used oil.
Clean the inside of the hydraulic tank using a mild solvent. Allow the tank to dry completely.
Install the hydraulic tank and install and tighten the hydraulic tank retaining fasteners. Torque to
specification.
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