EXHAUST SYSTEM (J08E)
EN04–52
EN0110604D100008
.
(***) Caution items before inspection of the fuel injection quantity
1.
Connect the HINO-DX and perform warm-up until the engine temperature becomes 82
C {180
F} or higher.
2.
Set the gear to neutral and pull the parking brake lever sufficiently.
3.
Switch off the air conditioner and the headlights.
4.
Confirm that charging of the air compressor has been completed.
5.
Switch off all other auxiliary equipment loads. (Refrigeration compressor, PTO, etc.)
HINT
After the inspection, enter check marks into the empty check boxes.
5
6
7
8
EGR valve
Supply pump, Injector
Fuel injection quantity
Manual regeneration
Following characteristic at
the time of inspection (Error
within
5%)
Stability of the pump elec-
trical current value
*Standard = Refer to the sup-
ply pump inspection.
Injector correction value
*Guide value = "Correction
value for the correction injec-
tion quantity between cylin-
ders" at the time of idle
speed within
5 mm
3
/st
Injection quantity
.
1.
At the time of idle
2.
At the time of exhaust
control valve is in oper-
ation
Exhaust control valve
operation (No clinging or air
leakage etc.?)
*At the time of exhaust con-
trol valve opening adjust-
ment, refer to the standard
value table shown blow left.
*Confirm the injection quan-
tity at the time of exhaust
control valve is operating
when the exhaust tempera-
ture has stabilized.
*To be performed with all
auxiliary equipment load off.
Gas leakage at the time of
regeneration
Discharge of white or black
smoke at the time of regener-
ation
Exhaust gas temperature
at the time of regeneration
*Peak temperature: 500
C or
more (guide value)
Regeneration time
*Guide value: Approximately
20 min
YES
NO
YES
NO
YES
NO
YES
NO
•
Replacement in case of
bad following
•
Supply pump replace-
ment when the inspec-
tion result is NG
•
Injector replacement
when the injector cor-
rection value is not
within
5 mm
3
/st
Repair or replacement the
exhaust control valve in case
of problems with exhaust
control valve operation.
(***)
White smoke means exces-
sively closed exhaust control
valve
Readjustment. Black
smoke requires DPR filter
confirmation.
Replace if
the rear part is black.
•
If the temperature rise
is bad although injec-
tor, VNT, and EGR all
are OK, inspect the
temperature sensor and
the front of the DPR.
Clean if the front is
clogged.