6.1.3.
Fuel feed pump
1) General descriptions and construction
The P-type injection pump is mounted with K-ADS or KP type feed pump.These pumps have
the same basic construction and operation, and the general descriptions of the KP type
pump are given below :
The figures show its construction (right figure) and operation (below figure).The piston in the
fuel feed pump is driven by the push rod and tappet via the camshaft of injection pump and
performs reciprocating operation to control the suction and delivery of fuel. When the cam
reaches the Bottom Dead Center as shown in the figure, the fuel is drawn in through the
check valve on the inlet side.
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MAINTENANCE OF MAJOR COMPONENTS
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