Hino S5-LJ05E04A Workshop Manual page 646

17–12
CONNECTOR
TURBOCHARGER (J05E)
INSPECTION AFTER MOUNTING
1.
(1)
! CAUTION
•
•
•
2.
(1)
BOOST PRESSURE
SENSOR
Correct boost pressure
! CAUTION
When using the HINO-DX, the boost pressure is added to the
atmospheric pressure. (Check the pressure when engine is
stopped.)
SHTS021271600022
(2)
(3)
(4)
(5)
! CAUTION
Hold the SST (gauge) upright, or the needle becomes unstable
and measurement cannot be done accurately.
(6)
(7)
PROCEDURES FOR OPERATION
After mounting the turbocharger assembly to the engine, start the
engine and inspect each part for leakage of oil, coolant and
exhaust gas.
Do not run engine at a high speed immediately after starting
the engine. If the turbocharger is operated without sufficient
lubrication at the beginning of engine start, it may cause
bearing seizure.
Run the engine at idle for about 5 minutes before stopping
the engine.
If the engine is stopped suddenly, the turbocharger keeps
rotating with no oil pressure applied, which may result in a
worn bearing due to absence of oil film.
INSPECTING THE BOOST PRESSURE
Using the HINO-DX, inspect the boost pressure.
(Refer to the HINO-DX user's manual.)
Standard value (at maximum
engine speed)
Remove the boost pressure sensor of the intake pipe and connect
the SST (boost pressure measuring hose).
SST: S0944-41250
Gauge
09258-E1010
Boost pressure measuring hose
Pull in the SST (gauge) into the cab.
After warming up the engine fully, put the shift lever in neutral.
Press down the accelerator pedal fully and measure the boost
pressure at maximum engine speed by using the SST (gauge).
If the measured value is below the correct boost pressure, air
leakage from the air seal in the air intake system, clogged air
cleaner and intercooler, and malfunction of the VN mechanism
inside the turbocharger are considered possible reasons. Perform
inspection.
After measurement, put back the boost pressure removing part.
2
22.1 kPa {0.23 kgf/cm ,
2
3.2 lbf/in. } or more