1.7.2 Engine codes CPYA, CPYB, CPYC, CPYD, CPYE
1 - High-pressure line
q
30 Nm
q
Between high-pres-
sure accumulator
(fuel rail) and injec-
tors (piezo injec-
tors).
q
Install so that com-
ponent is not under
stress.
q
Removing and in-
stalling
Note
◆
The high-pressure
line may be reused
after the following
checks:
◆
Check taper seat of
high-pressure line
for deformation and
cracks.
◆
The inside of the
line must not be de-
formed, constricted
or damaged.
◆
Corroded lines
should no longer be
used.
2 - Fuel rail
3 - Seal
q
Renew
4 - Fuel pressure regulating valve -N276-, 80 Nm.
q
q
Checking fuel pressure regulating valve
.
q
Removing and installing
5 - O-ring
q
Renew
6 - Injector (piezo injectors)
q
Do not interchange!
q
When removing and installing an injector, always renew the following components and seals/O-rings:
“copper seal”, “O-ring for injector bore”, “O-ring for injector return connection”, “bolt for clamping plate”.
q
Removed injectors must always be reinstalled in their original location (on the same cylinder).
q
Before reusing “high-pressure line”, perform a visual check of taper seats for damage such as trans-
verse scores or corrosion. If the high-pressure line is damaged, it must always be renewed.
Adapting correction values
q
Removing and installing
q
Checking
3
Industriemotoren - Industrial Engines 2009
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Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
366
Repair Group 23 - Mixture preparation - injection