Hino 238, Workshop Manual

Page: 137 / 919

ENGINE CONTROL SYSTEM (J08E) 4–914
1. Set the starter switch to the "LOCK" position.
2. Replace the DPR filter
HINT
When replacing the DPR filter, replace the burner nozzle and clean
the igniter.
3. Connect the vehicle to Hino-DX. Select [Engine] then set up
[Exhaust Temp. (OUT)] from the [Data Monitor] menu.
4. Perform DPR manual regeneration and measure (monitor) the
exhaust gas temperature.
NO YES
Check the injection quantity and the rotational fluctuation.
1. Start the engine.
2. Select [Injection quantity] from the [Data Monitor] menu and mea-
sure the injection quantity.
3. Select [Engine speed] from the [Data Monitor] menu and measure
the rotational fluctuation.
3
Inspection of the exhaust gas temperature [Hino-DX]
Select
Engine
SAPH16F010300715
Standard values
Exhaust gas temperature: below 800

C {1,472

F}
Do the measurements meet the standard value?
Go to step 4. Go to step 10.
4
Inspect the injector [Hino-DX]
E
n
gi
n
e
Ne
(r/min)
NE Rotational fluctuation
@1,500 r/min (measurement by Hino-DX)
Select
Engine
SAPH16F010300716
Measurement conditions
Engine speed: 1,500 r/min No-load,
T/M shift lever: Neutral position, A/C off and
Air compressor un-operating.
Engine coolant temperature: more than 80

C {176

F}
Standard values
Type of
MT
Allison 2200
Allison 2500
Allison 3500
Q (mm
3
/st)
5.0q
6.0q
Ne (r/min)
26