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Maintenance manual for sunray hfc4da1-2c china-IV diesel engines
63 Section VI Lubrication System
While the engine is working, all motion parts apply one specific force onto another part and generate relatively high z The engine oil filter is functioned to filter out the metallic wear dust, mechanical impurity, and engine oil oxide from the engine oil. The ingress of these impurities into the lubrication system along with the engine oil will z The engine oil pump is of externally engaged gear pump and is driven by the crankshaft. z The cooling nozzle of piston is arranged on the main oil passage to realize the stable oil spray for cooling. The spray of engine oil into the cold oil passage within the piston can effectively reduce the thermal load of the
Valve mechanism Splash Rocker arm bearing Oil way o f cy li nde r bl ock
Various cam tappets Splash Various camshaft bearings Various crankshaft main bearings Splash Piston group Timing gear Turbocharger Oil w ay o f cy li nde r b loc k
O il w ay of cy lin de r blo ck
Co olin g noz zle
By pass
Engine oil filter Engine oil cooler Engine oil pump T u rboc har g er o il i n le t pi p e T u rb oc har g er oi l ret urn p ip e R eli ef va lv e Re li ef va lv e Main oil way Oil ou tle t pi p e St ra in er
Oil sump |