FAW Jiefang Automotive 485, Руководство по эксплуатации и техническому обслуживанию

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filtered, the fuel oil will enter the fuel-injection pump. Inside the pump, high pressure is produced,
by which the fuel will, via high-pressure fuel pipe, be atomized and injected into the combustion
chamber, where the fuel is combusted.
1. Fuel-transfer pump
With a single-function roller design, the fuel-transfer pump consists of hand-pressed
fuel-transfer pump, roller, piston, piston spring, pump body, fuel-in/-out check valve and
fuel-in/-out pipe fittings etc.
The fuel-transfer pump is driven by an eccentric gear on fuel-injection pump camshaft. The
eccentric gear pushes the rod, and the rod then pushes the piston, pressing and transferring the fuel
into the fuel chamber of fuel-injection pump.
Inside the pipe fitting of fuel-in pipe of fuel-transfer pump, is fitted a filter gauze, used to
filter the fuel. During overhaul/maintenance, the filter gauze should be cleaned if found clogged,
and should be replaced if found broken or damaged. Otherwise, the friction couple (i.e., friction
paired part) of fuel-transfer pump will be severely worn off, and fuel-in/-out check valve will have
a poorer sealing, causing insufficient fuel-supply.
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