MAJOR MAINTENANCE
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2.1.13. Air removal of fuel system
The suction room of fuel injection pump has the function of air removal continuously during the operation
through a relief valve.
In case that the suction room lacks fuel at all, for instance, in case of new installation of injection pump, after
loosening the air removing screws of cartridge filter respectively, remove the air by operating the manual pump
of fuel supply pump until bubble will disappear.
2.1.14. Fuel supply pump
Every time of engine oil replacement, the fuel strainer installed at the fuel supply pump should be removed and
cleaned.
2.1.15. Turbocharger
The turbocharger needs not arty special equipment.
Every time of engine replacement, a leakage or clogging of oil pipes should be inspected. Air cleaner should be
maintained carefully for nut or foreign material not to get in. Periodic inspection should be applied on the
compressed air and exhaust gas pipes, For leaking air will bring the overheat engine, an immediate repair must
be done. During the operation that is surrounded by the dust and oil mixed air, frequent cleaning must be done
on the impellers. Tear down the impeller casing (attention: be careful not to bend) and must clean with non-acid
solvent solution. If necessary, use plastic scraper If impeller is severely polluted, dip the impeller into solution
and may be better to clean it with stiff brush.Then one thing to beware is to dip only impeller part and so do not
support by impeller but bearing housing.
2.1.16. Starting motor
In case of engine maintenance, clean pinion and ring gear thoroughly putting in the fuel, and coat them with
grease.
Also, In case of washing car and so forth, inspect the wiring state being careful for not to get.
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