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3.
After completion of manual regeneration by (1) or (2), keep the engine running and wait for the exhaust temperature
(IN side) to drop. Confirm a drop to 200 degrees or lower and then inspect the exhaust gas back pressure according
to the following procedure.
Confirmation method:
Execute in the order of DPR Reset Confirmation Back pressure Check (D) Start (E).
4.
Confirm that the values of the exhaust gas back pressure are at or below the standard.
Engine model
5.
When the confirmation result in (4) is at or below the standard, DPR manual regeneration and the confirmation work
have been completed. Click "Stop" on the DPR Back pressure Check screen to end the work with the HINO-DX.
6.
If the exhaust gas back pressure with the inspection in (5) exceeds the standard, repeat the steps (2), (3), (4), and
(5).
7.
If the exhaust gas back pressure with the work in (6) is within the standard, DPR manual regeneration and the confir-
mation work have been completed. Click "Stop" on the DPR Back pressure Check screen to end the work with the
HINO-DX.
8.
If the exhaust gas back pressure still exceeds the standard with the second manual regeneration, the DPR filter is
defective and must be replaced.
*
2 Additional information for filter cleaning with a washing machine
Confirm the following for filter cleaning with a washing machine.
Use a washing machine from a manufacturer recommended by Hino Motors.
Perform cleaning with correct installation of the attachment for DPR filters made by Hino Motors.
In the following instances the filter cannot be cleaned. In these cases, the filter must be replaced.
1.
Cleaning is not possible for filters where soot has escaped and the surroundings have turned black when the filter
body is seen from the gas flow outlet side.
2.
Cleaning is not possible when a large quantity of oil adheres to the filter body as seen from the gas flow inlet side.
3.
Cleaning is not possible when the filter or the catalyst shows cracks or damage seen from any side.
When cleaning has been completed and the filter has been installed again, perform the following inspections.
4.
Use the HINO-DX to perform DPR forced regeneration, then confirm normal completion.
5.
In this condition, wait for the exhaust gas temperature to drop to 200C or lower, perform the back pressure inspec-
tion, and confirm that the inspection value is at or below the standard.
6.
If the back pressure value is high, the filter is defective and must be replaced.
*
3 Check for sensor coupler disconnection even when DPR DTC code is displayed.
*
4 Pay attention to the following when the temperature sensor is inspected because of
DPR DTC code or a temperature sensor DTC code.
1.
Replace if the tip is bent.
2.
Do not bend the tip when it is normal.
3.
When the sensor tip is bent, normal control may not be possible and this can lead to DPR trouble.
4.
When disconnecting the sensor, remove the sensor body from the muffler after completely removing the harness fix-
ing clips. If this is not done, the sensor tip could get damaged.
EXHAUST (J05E)
J05E
DPR Back pressure (Units: kPa {kgf/cm
5.0 {0.05, 0.7}
11–35
2
2
, lbf/in.
})
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