Recommendation For Lp Fuel System - Daewoo G424 Gasoline Service Manual

6
8
IDES106P
Carburetor Components (Carburetor Shown Removed For
Better Illustration)
(6) Spring. (7) Backup plate and diaphragm. (8) Air valve ring. (9)
Air-gas valve assembly. (10) Inner carburetor body.
1. Remove carburetor cover (3), spring (6), backup
plate and diaphragm (7), air valve ring (8) and
airgas valve assembly (9).
2. Slowly turn the LP fuel ON at the tank.
3. Check the inlet fuel jet for fuel flow (leakage) in
carburetor body (10).
4. If the operation of fuelock (2) and converter (1) are
correct, there will be no fuel flow.
5. If there is fuel flow, the leakage problem must be
found either in the fuelock or the converter.
6. Push in primer button (4) on the converter to open
the converter fuel regulator valve.
7. A small amount of fuel will flow through the
carburetor inlet fuel jet as the fuel from fuelock (2)
flows out of the hose.
8. If the operation of fuelock (2) is correct, the fuel flow
will stop as soon as the system is empty.
G424 Service Manual
Converter Leak Test
7
To check the converter for leakage after repair, do the
procedure that follows:
1. Put a plug in the fuel outlet openings.
9
10
2. Put compressed air in the fuel inlet openings, up to
a maximum of 725 kPa (120 psi).
3. Wait ten minutes and then check the converter or
fuelock for air leaks. Listen for air to come out
around gaskets or seals.
4. If there are no air leaks, then the converter is good.
5. If air does come out, then the converter will have to
be disassembled to find the problem.
Recommendation For LP Fuel
Systems
In freezing temperature conditions run the engine at
fast idle until the engine coolant temperature is
between 10 to 16˚C (50˚F to 60˚F). A low idle in cold
temperature conditions can damage the engine
because of poor circulation of the engine oil. Running
the engine to move the lift truck short distances and
then stopping the engine without the coolant being
heated can cause the LP fuel to be trapped (cannot be
released) in the converter. As this trapped fuel
changes to a vapor with the engine stopped, this
change causes too much pressure in the converter.
The force from the pressure is put on the primary
regulator valve against its seat. If this occurs often, the
primary regulator valve in the vaporized area of the
converter will be damaged.
80 LPG Fuel System