Hyundai Sonata 1991 Shop Manual page 299

FUEL PUMP
FUEL PUMP
COMPONENTS
Discharge port
Fuel (to main pipe)
t
t
Fuel (from fuel tankl
Check valve-------11E21
DC motor
Intake port
GENERAL INFORMATION
Relief valve
O-ring
Amature assy
nner rotor
t21t----Outer rotor
O-ring
Y31lAOA
31Y153
Fuel within the fuel tank is pumped tothe injectors under pressure.
This fuel pump, is installed within the fuel tank, and is submerged
in the fuel. It features excellent performance while having low
operating noise. This pump is also called a "wet type" of pump
because the inside is also filled with fuel. It consists of a ferrite-
type DC motor unified with a Ge-rotor type pump. The pump itself
is composed of a motor-driven gear, casing and cover. A relief
valve and check valve are also used.
31-74