Doosan G643E - Specification

G643(E) Service Manual Chapter 2. Recommended Maintenance 30
INTERVAL HOURS
CHCK POINT
Daily
Every
250
Hours
or
1 month
Every
500
Hours
or
3 month
Every
1000
Hours
or
6 month
Every
1500
Hours
or
9 month
Every
2500
Hours
or
15 month
Every
3000
Hours
or
18 month
Pressure Regulator/Converter
Test regulator pressures. X
Inspect pressure regulator vapor hose for
deposit build-up. Clean or replace as
necessary.
X
Inspect regulator assembly for fuel/coolant
leaks
X
Fuel Trim Valve(G420FE only)
Inspect valve housing for wear, cracks or
deterioration.
X
Ensure valve seals in the closed position
when the engine is off.
X
Replace FTV When indicated by MIL
Carburetor(Mixer)
Check air filter indicator X
Check for air leaks in the filter system. X
Inspect air/fuel valve mixer assembly for
Cracks, loose hoses, and fittings. Repair or
Replace as necessary.
x
Check for vacuum leaks in the intake
system including manifold adapter and
mixer to throttle adapter
x
Repair or replace throttle assembly When indicated by MIL
Inspect air filter. X
Replace air filler element X
Check TMAP sensor for tightness and
leaks.
X
Exhaust & Emission
Inspect engine for exhaust leaks X
Replace PCV valve and breather element. X
Replace HEGO sensors When indicated by MIL