Doosan DX140LCR, Руководство по ремонту

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SP001671
Page 231
QSB4.5 Engine
Fuel Consumption Excessive
Cause Correction
STEP 1
Operator technique is not correct
Explain correct engine operation to the operator.
Refer to Operating Instructions, Procedure 101-
999.
OK
Go To Next Step
STEP 2
Electronic fault codes are active
For instructions on how to read active fault codes,
refer to Diagnostic Fault Codes, Procedure 101-
007. If fault codes are active, contact a Cummins
Authorized Repair Facility.
OK
Go To Next Step
STEP 3
Fuel leak
Check the fuel lines, fuel connections, and fuel
filters for leaks. Check the fuel lines to the supply
tanks. Refer to the OEM service manual.
OK
Go To Next Step
STEP 4
Hubometer or odometer is miscalibrated
Check the hubometer and odometer calibrations.
Calibrate or replace the hubometer or odometer,
if necessary. Calculate fuel consumption with new
mileage figures.
OK
Go To Next Step
STEP 5
Hour meter is miscalibrated
Check the hour meter. Calibrate or replace the
hour meter if necessary. Calculate fuel
consumption with new figures.
OK
Go To Next Step
STEP 6
Air intake or exhaust leaks
Check for loose or damaged piping connections
and missing pipe plugs. Check the turbocharger
and exhaust manifold mounting. Refer to
Procedure 010-033.
OK
Go To Next Step
STEP 7
Air intake system restriction is above specification
Check the air intake system for restriction. Clean
or replace the air filter and inlet piping as
necessary. Refer to Procedure 010-058.
OK
Go To Next Step
STEP 8
Equipment and environmental factors are
affecting fuel consumption
Consider ambient temperatures, wind, tire size,
axle alignment, routes, and use of aerodynamic
aids when evaluating fuel consumption.
OK
Go To Next Step
STEP 9
Lubricating oil level is above specification
Check the oil level. Verify the dipstick calibration
and oil pan capacity. Fill the system to the
specified level. Refer to Procedure 007-043.
OK
Go To Next Step
STEP 10
Contact a Cummins Authorized Repair Facility