Linhai ATV 500-D T3 EFI, Service Manual

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CHAPTER 2 MAINTENANCE
LH500ATV-D T3 EFI SERVICE MANUA 19.0
CHAPTER 2 MAINTENANCE PAGE. 2- 9
Fuel Pump Module
Description and Working Principle
Fuel Pump Module supplies fuel to engine at
system pressure. Fuel Pump Module is
mounted to fuel tank at bottom and supplies
fuel to engine through hoses.
Fuel Pump module consists of Fuel Pump to
generate the fuel flow and pressure
regulator to regulate the fuel pressure.
Fuel Pump
When power is supplied to fuel pump, motor in
pump assembly rotates the impeller.
Impeller in turn draws the fuel from strainer and
pumps the flow to generate the system
pressure.
Appearance & Components of Fuel
Module
1. Fuel Pump
2. Strainer
3. Gasket, Fuel Module
4. Module Bracket
5. Module Harness
6. Fuel Tube (out pump)
Dimensions
Fuel Module Cover in elliptical shape with outer
edge dimensions as 115mm x 65mm.
Identification and Markings
Fuel Module, Fuel Pump and Regulator are
marked with batch code in Julian Date Code.
On Fuel Module, batch code in mentioned on
the label available on fuel module cover.
On Fuel Pump Batch code is engraved on
pump body (shell).
On Fuel Pressure Regulator, batch code is
engraved on regulator dome area.
Operating Conditions
Fuel Pump Module needs to be mounted on
Fuel Tank Bottom according to the
installation instructions.
Fuel Pump Module is intended to use with
gasoline. However if the fuel contains
ethanol, please contact vehicle manufacture to
check whether the fuel pump module
itself can survive or not.
Make sure there is at least 3 liters of gasoline in
the fuel tank before priming for first
time (do not run the pump dry)
Fuel Hose connections needs to be installed
according to the fuel flow diagram shown
Fuel Flow Description in vehicle fuel system
Service Procedure
Precautions:
Before attempting any service on fuel system,
following cautions should be always