Yuchai YC135, Operation And Maintenance Manual

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18.4.1. Engine oil and hydraulic oil
•
Engine and working equipment oil, are used in critical conditions (high
temperature and high pressure), so they will deteriorate with use.
Therefore use always oil useful for real temperature and pressure like as
written in this manual. If the oil is not dirty, replace it at the interval
scheduled in this manual.
•
Pay attention to avoid foreign materials (water, particles, dusts, etc.) drop
into the oil. Most of the problem that will come out depends on contaminant
in oil. Be careful when manipulate oil to storage it or add in the machine.
•
Never mix different kind of oil.
•
Add only the right quantity of oil. To much oil or lack oil will cause damage.
•
If hydraulic oil is not clear, maybe some air or water drop in it. In this case
please contact YUCHAI ENGINEERING MACHINERY CO. LTD.
•
When change oil, always change relative filter.
18.4.2. Fuel
•
Fuel pump is a precision instruments. If fuel contain water or dust, it may
not work properly.
•
Be sure that no impurity will contaminate fuel when storage it or refuelling.
•
Always use fuel specified in this manual.
ATTENZIONE
!
L
OW TEMPERATURE
Fuel may freeze below -15 °C, so is necessary change it with one
useful for low temperature.
Never add antifreeze materials to the fuel.
•
To avoid air condensation inside the fuel tank, refuelling it all ever day,
when stop work.
•
If engine will remain without fuel, or if filters are changed, you must breath
the air inside.