4-50 Inspection, Maintenance and Adjustment
022-00028AE Operation and Maintenance Manual
GENERAL MAINTENANCE
FUEL TRANSFER PUMP
This transfer pump is used to transfer fuel from a refueling source to fuel tank. A check valve is installed in
the inlet hose to prevent fuel from flowing backward from fuel tank to source. A strainer is installed in inlet
hose to prevent any foreign material from being introduced into transfer pump or fuel tank.
A thermal limiter, built into motor, will automatically shut off the circuit if motor is overheating to protect
motor from damage.
WARNING!
1.
Do not dry operate fuel pump for more than 15 seconds.
•
Cooling and lubrication of pump is achieved by fuel passing through the pump. If the
pump is dry operated, the heat generated by the moving parts will cause damage to
the pump rotors, vanes and seals. To prevent unnecessary wear and / or damage to
the pump do not dry operate the fuel pump for more than 15 seconds.
2.
Do not operate the pump for more than 15 minutes at a time.
•
Continuous usage of pump over the recommended time interval will cause
overheating of motor result in causing motor damage.
3.
Do not use refueling pump for other types of fuel. (Use only for diesel fuel.)
•
Do not use refueling pump for other types of fuel which have a low flash point.
•
Do not use refueling pump for fuel contaminated with water or high humidity. Moisture
in pump mechanism can cause rust and can create pump failure.
4.
Always operate pump using the strainer installed on the inlet hose. This will prevent any
foreign materials from being introduced into the pump. Always maintain the pump and all of
its components in a clean condition.
•
If dirt or other foreign materials enter the pump, it can become lodged between the
rotor and / or vanes and generate heat which can cause pump damage.
•
Do not remove strainer or use a strainer with larger mesh to increase the flow of fuel.
5.
Be careful not to overfill or spill fuel.
6.
Make sure the direction of check valve is in line with the flow direction of fuel.
7.
If any parts or components of the pump become lost, damaged or inoperable, immediately
replace it with a new one.
IMPORTANT
If there are any sign of leakage while operating transfer pump, inspect the following components
to prevent any fires or hazardous fuel spills.
•
Check all hoses leading to and from the transfer pump.
•
Check all hose clamps.
•
Check transfer pump inlet port.
