X Lubricating System
Preparatory data--------10.1
Fault diagnosis---------10.2
Oil engine pump-------10.3
10.1 Preparatory Data
Precautions on Operation
When the engine oil pump is removed, clean carefully all the components and purge them with high-pressure gas.
During engine oil pump removal and installation, pay attention not to drop anything into the crankcase.
Function of lubricating system：Function of engine lubricating system is to supply lubricating oil
to friction surfaces of engine parts so that dry surface friction will turn to liquid friction between
plasmids of lubricating oil. It is used to reduce wear of component, cool components of higher
heat, absorb impact from bearing and other parts, weaken noise, increase tightness between
piston ring and cylinder wall, clean and take away impurities from surface of component, etc.
Basic data
Item Standard Service Limit
Engine oil capacity
Oil replacement 1.0±0.1L ＿
Engine overhaul 1.3±0.1L ＿
Oil pump rotor
Radial clearance between inner and external rotors Less than 0.15 0.2
Clearance between external rotor and pump block 0.15-0.18 0.2
Clearance of rotor end face 0.08-0.12 0.15
10.2 Fault Diagnosis
Reducing engine oil Engine burnt
Natural consumption No oil pressure or too low oil pressure
Oil leakage Clogged oil way
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