Thermo King KD-II SR, Manual

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Engine Maintenance (Rev. 04/03)
72
Water in the Fuel System
Water in the fuel system can damage the injection pump,
nozzles and prechamber. This damage will subsequently
cause more expensive damage to the engine. A large accu-
mulation of water in the bottom of the fuel tank will stop a
diesel engine. Water should be drained off periodically to
avoid breakdowns. This should be done after the tank has
set idle for an hour. DO NOT steam clean fuel tank caps.
Fuel Filter Replacement
1. Remove the filter and discard.
2. Lubricate rubber ring of new filter with fuel.
3. Install the filter and tighten until the filter is slightly
loose (rubber ring not making contact).
4. Bleed the air from the filter by operating the electric
pump until fuel bubbles appear at the top of filter.
5. Tighten the filter until the rubber ring makes contact,
then tighten 1/2 turn more.
ELECTRIC FUEL PUMP
Operation
The electric fuel pump must be mounted next to the fuel
tank. This pump is designed to push rather than pull fuel.
Make sure the pump case completes a good ground with the
battery. The pump will not operate at less than 9 Vdc. The
pump is self priming as long as it is not higher than 30 in.
(762 mm) from the fuel in the fuel tank.
Maintenance
Field service is limited to cleaning the bottom cover and
filter. The filter and cover gasket are replaceable.
Disassembly
1. Remove the three screws from the cover.
2. Remove the filter, cover and cover gasket. Wash the fil-
ter in cleaning solvent and blow out the dirt and clean-
ing solvent with compressed air. Check the cover
gasket and replace if damaged. Clean the cover.
Reassembly
Place the cover gasket on the bottom cover and install the
filter and cover assembly. Replace the three screws.
If pump does not operate, check for:
1. The ground to the mount or frame.
2. Clean and tighten electrical connections.
3. The pump voltage and polarity. It must be the same as
the unit system.
If Pump operates but does not deliver fuel, check
for:
1. Air leaks in the fuel lines or connections.
2. Kinked fuel lines or other restrictions in the line.
3. A leaking or distorted cover gasket.
1. Filter
2. Gasket
3. Cover
4. Screws (3)
5. Magnet
Electric Fuel Pump