Doosan G20 SIIIA, Operation & Maintenance Manual

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94 G20, 30, 40 SIIIA Operation & Maintenance Manual
INSPECTION EVERY 1500 HOURS OPERATION
(a) Inspect, Clean and Test Fuel Injectors
As the adjustment requires specialized knowledge and
skill, consult your Portable Power dealer. This adjustment
is needed to obtain the optimum injection pattern for full
engine performance.
(b) Inspect Turbocharger (Blower Wash as
Necessary)
Turbo charger service is required by the EPA/ARB every
1500 hours.
Your authorized Portable Power dealer or distributor will
inspect and blower wash the unit if necessary.
(c) Inspect, Clean and Test EGR Valve
The EGR valve is a key component for cleaning exhaust
gas.
To prevent the valve from deteriorating in exhaust gas
recirculation performance due to carbon accumulation,
inspect, clean and test the valve at least every 1500
hours. Consult your local Portable Power dealer for this
service.
(d) Inspect and Clean EGR Lead Valve
The EGR lead valve is located in the passage of
recirculated gas.
To prevent carbon accumulation in or clogging of the lead
valve, inspect and clean the lead valve at regular
intervals. Consult your local Portable Power dealer for
this service.
(e) Clean EGR Cooler
The EGR cooler is apt to be contaminated with rust and
scale that deteriorate the cooling performance. Carbon
accumulation in the exhaust gas passage of the cooler
hinders circulation of exhaust gas, resulting in
deterioration in exhaust gas cleanup performance.
To prevent such a problem, clean the cooler at least
every 1500 hours. Consult your local Portable Power
dealer for this service.
(f) Inspect Crankcase Breather System
Proper operation of the crankcase breather system is
required to maintain the emission requirements of the
engine. The EPA/ARB requires that you have the
crankcase breather system inspected every 1500 hours.
See your authorized Portable Power dealer or distributor
for this service.
EGR Cooler
EGR Valve
EGR Lead Valve