Doosan D50S-5 Operation & Maintenance Manual page 185

your specific engine, see the " Service Manual ". your specific engine, see the " Service Man
Fuel Filter - Check, Clean, Change Fuel Filter - Check, Clean, Change
Diesel Engine Diesel Engine
Park lift truck with the forks lowered, parking brake Park lift truck with the forks lowered, parking brake
applied, transmission in neutral, engine stopped and applied, transmission in neutral, engine stopped and
cool. cool.
1. 1. Raise the right side cover. Raise the right side cover.
Fuel leaked or spilled onto hot surfaces or Fuel leaked or spilled onto hot surfaces or
electrical components can cause a fire. electrical components can cause a fire.
Turn the disconnect switch OFF or disconnect Turn the disconnect switch OFF or disconnect
the battery when changing fuel filters. the battery when changing fuel filters.
Typical Example Typical Example
Always replace the secondary element. Do not Always replace the secondary element. Do not
attempt to reuse it by cleaning. attempt to reuse it by cleaning.
3. 3. Install a new secondary element. Install a new or Install a new secondary element. Install a new or
cleaned primary element. Install the cover. cleaned primary element. Install the cover.
Tighten the latches. Tighten the latches.
4. 4. Start the engine and observe the air cleaner Start the engine and observe the air cleaner
service indicator. If the indicator shows RED after service indicator. If the indicator shows RED after
installing a new secondary element and a installing a new secondary element and a
cleaned primary (outer) element, replace the cleaned primary (outer) element, replace the
cleaned primary filter with a new element. cleaned primary filter with a new element.
5. 5. Stop the engine. Close the hood and seat assembly. Stop the engine. Close the hood and seat assembly.
ual ".
WARNING WARNING
Diesel Engine Diesel Engine Truck Truck
NOTICE NOTICE
5. 5. Turn the new fuel filter cartridge assembly until Turn the new fuel filter cartridge assembly until
the filter gasket is fitted against the sealing face. the filter gasket is fitted against the sealing face.
6. 6. Turn the fuel filter cartridge assembly an Turn the fuel filter cartridge assembly an
additional 2/3 of turn. additional 2/3 of turn.
Air Intake System - Change Air Intake System - Change
Changing Primary Element Changing Primary Element
See topic, "Air Intake System - Check, Clean" in See topic, "Air Intake System - Check, Clean" in
"Every 250 Service Hours or Monthly". "Every 250 Service Hours or Monthly".
Changing Secondary Element Changing Secondary Element
Replace the secondary element after the primary Replace the secondary element after the primary
element has been cleaned three times or yearl element has been cleaned three times or yearly. y.
1. 1. Remove the primary air cleaner element. See Remove the primary air cleaner element. See
topic "Servicing Filter Element". Clean the inside topic "Servicing Filter Element". Clean the inside
of the air cleaner housing and cover. of the air cleaner housing and cover.
2. 2. Remove the secondary element. Inspect the Remove the secondary element. Inspect the
gasket between the air cleaner housing and the gasket between the air cleaner housing and the
engine inlet. Replace the gasket if it is damaged. engine inlet. Replace the gasket if it is damaged.
184 184
LP Regulator/Converter Inspection LP Regulator/Converter Inspection
(LP Engine Only) (LP Engine Only)
Visually inspect the pressure regulator/converter Visually inspect the pressure regulator/converter
 
housing(2) for coolant leaks. Refer to the housing(2) for coolant leaks. Refer to the
pressure regulator/converter section of the pressure regulator/converter section of the
service manual if maintenance is required. service manual if maintenance is required.
NOTE: NOTE: For pressure testing and internal inspection For pressure testing and internal inspection
of the pressure regulator/converter, refer to of the pressure regulator/converter, refer to
the pressure regulator/converter section of the pressure regulator/converter section of
the service manual. the service manual.
Fuel Lines & Fittings – Check Fuel Lines & Fittings – Check
Visually inspect fuel lines and fittings for physical Visually inspect fuel lines and fittings for physical
damage. Replace as required. damage. Replace as required.
Maintenance Section Maintenance Section