Hisun HS700UTV-4 Maintenance Handbook page 368

Connect
(battery) to fuel module.
Make sure that enough fuel available in
3
fuel tank to avoid fuel pump running
dry.Is the fuel pump running
Check fuel system pressure at Injector
inlet (with a T-joint) while engine is
running in idle condition.
4
Is the pressure
270kPa?
5 Is the Pressure below 220kPa?
3．Fuel Module Removal:
•
Relieve fuel pressure in fuel lines referring to the 'Fuel Pressure Relief Procedure' provided
in this section.
•
Disconnect negative cable at battery.
•
Disconnect fuel module wire coupler.
•
Drain the fuel in fuel tank thru fuel filler with help of hand pump (siphon). Collect the fuel in
approved container for contamination and safety.
•
Disconnect the fuel hoses from fuel module by using standard tools
•
Remove the fuel tank from vehicle.
•
Place the fuel tank with bottom up condition. Care to be taken not to cause any scratches/
damages on fuel tank.
•
Open the fuel module mounting bolts.
•
Take out fuel module assembly from fuel tank with care
•
Care to be taken not to damage the strainer while removing fuel module from tank.
4. Fuel Module Installation:
•
Replace the fuel module gasket in fuel module assembly with a new one. Old/ used gaskets
can cause leakages.
•
Fold strainer towards fuel pump and insert fuel module in tank opening with care. Care
should be taken not to cause any damages on strainer.
Fuel Module Orientation: Fuel module bolts not symmetrical and can be mounted
only in the intended direction. Regulator side should be facing the Fuel Tank rear
side.Make sure that the fuel tank surface at module mounting area is clean and
free of surface defects.
ENGINE MANAGEMENT SYSTEM
12V DC power
between 220
supply
1. Check electrical
circuit from fuel
module to ECU
2. Check ECU
Fuel Module Operation
Normal
~
1. Check for leakages
from hoses, hose
joints
2. Check Fuel Pump
3. Check Pressure
Regulator
NOTE
- 355 -
1. Check Fuel
Pump Harness
integrity
2. Check Fuel
Pump
Go to Step 5
1. Clogged Filter
2. Kink/ Blockage
in Fuel Hoses
3. Check Regulator