Note
â—† During some checks, the engine control unit may detect and
store a fault. Therefore, after completing all checks and re-
pairs, interrogate the event memory and erase if necessary
⇒ Page 26, Interrogating event memory.
â—† For trouble-free operation of electrical components, a volt-
age of at least 11.5 V is necessary.
â—† Renew self-locking nuts.
Adhere to instructions for working on fuel system ⇒ Page 351.
To avoid any risk of injuries to persons and/or the destruc-
tion of the injection and glow plug system, the following
must be noted ⇒ Page 353
Observe safety precautions when working on diesel direct injec-
tion fuel system ⇒ Page 354.
Observe rules for cleanliness ⇒ Page 354.
Assembly overview - intake manifold with attachments
⇒ Page 355.
Removing and installing intake manifold ⇒ Page 357.
System - ⇒ Page 358
Assembly overview - fuel system ⇒ Page 362.
Correction values for injectors ⇒ Page 368
Checking for injectors that are jammed open ⇒ Page 369
Removing and installing injector (piezo injector) ⇒ Page 370.
Install high-pressure lines ⇒ Page 375.
Check return flow rate from fuel pressure regulating valve
-N276- ⇒ Page 377.
Removing and installing fuel pressure regulating valve -N276-
⇒ Page 377.
Removing and installing fuel pressure sender -G247-
⇒ Page 379.
Removing and installing high-pressure pump ⇒ Page 380.
Fill/bleed fuel system ⇒ Page 383.
Checking fuel system for leaks ⇒ Page 384
Checking pressure retention valve in fuel return line
⇒ Page 385.
1.1 Instructions for working on fuel system
To prevent the high-pressure fuel pump from running while
it is empty and to ensure that the engine starts quickly after
parts have been renewed, it is important to observe the fol-
lowing:
Industriemotoren - Industrial Engines 2009 ▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
3
1 Repairing diesel direct injection system
351
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