Doosan D60S-7 - Fuel Lines & Fittings - Check; Inspect Coolant Hoses (LP Engines Only); Inspect Mixer Assembly (LP Engine Only); Inspect Throttle Assembly (LP Engine Only)

Maintenance Section
238
Inspect Coolant Hoses
(LP Engines Only)
 Visually inspect coolant hoses and clamps.
Remember to check the two coolant lines that
connect to the pressure regulator/converter.
 Replace any hose that shows signs of swelling,
cracking, abrasion or deterioration.
(1) LP fuel lock-off,
(2) LP regulator/converter
(3) Fuel Trim Valve(FTV),
(4) LP mixer
(5) Vacuum lines,
(6) Coolant lines,
(7) LP fuel line
LP Regulator/Converter Inspection
(LP Engine Only)
 Visually inspect the pressure regulator/converter
housing(2) for coolant leaks and detect the fuel
pipe joints, LP mixer and regulator/converter for
LP fuel leaks.
To detect the LP fuel leaks, smear detected
parts with suds, visually inspect whether there
are bubbles after the engine start.
NOTE: For pressure testing and internal inspection
of the pressure regulator/converter, contact
to the Doosan service.
Fuel Lines & Fittings – Check
Visually inspect fuel lines and fittings for physical
damage. Replace as required.
Inspect Mixer Assembly
(LP Engine Only)
Refer to the LP mixer section of the engine service
manual for procedures.
Inspect Throttle Assembly
(LP Engine Only)
 Visually inspect the throttle assembly motor
housing for coking, cracks and missing
cover-retaining clips. Repair and/or replace as
necessary.
NOTE: Refer to the LP mixer and throttle section of
the service manual for procedures on
removing the mixer and inspecting the
throttle plate.
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