Hino 238, Руководство по ремонту

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DEF SCR SYSTEM (DCU) 5–265
7
Inspect the
DEF tank
DEF discharged from the DEF
tank, check for foreign material in
the tank.
There are for-
eign objects:
Go to YES.
There are no
foreign
objects: Go to
NO.
Remove the
foreign objects
and clean the
DEF tank.
NOTICE
The DEF tank
must be
cleaned with
fresh water or
diluted DEF.
Perform "After-
inspection
work" of
INFORMA-
TION section.
Replace the
DEF pick-up
assembly
(DEF sensor).
Perform "After-
inspection
work" of
INFORMA-
TION section.
8
Inspection of
the DEF pres-
sure 3 (Inspec-
tion of the DEF
pump) [Hino-
DX]
1. Set the starter switch to the
"LOCK" position.
2. Replace with a new inlet
valve of the DEF pump.
3. Connect SST1 again
between the DEF tank(1)
and the DEF pump(2).
4. Set the starter switch to the
"ON" position.
5. Use Hino-DX and perform
[Leak test].
<Standard values>
The DEF pressure is stable in the
8,500 to 9,500 hPa (123.3 to
137.8 psi) range for 60 seconds.
The measure-
ments meet
the standard
value: Go to
YES.
The measure-
ments do not
meet the stan-
dard value: Go
to NO.
Procedure
completed.
Perform "After-
inspection
work" of
INFORMA-
TION section. Replace the
DEF pump.
Perform "After-
inspection
work" of
INFORMA-
TION section.
DTC: P20E8 Suction line pressure build up check Inspection Procedure
Step Action Description Judgement
Check
(Yes/No)
Yes No