User Manual

Chapter 14
BOSCH HDI EDC 15C2 INJECTION SYSTEM AND PARTICLE FILTER
135
4 - Working area
The working area must be clean and tidy.
Parts being repaired must be stored away from dust.
5 - Preliminary operations
IMPORTANT: The operator must wear clean overalls.
Before starting work on the injection circuit, the connectors of the following
sensitive components may have to be cleaned (see corresponding
operations):
• fuel filter,
• high pressure fuel pump,
• high pressure fuel common injection rail,
• high pressure fuel lines,
• diesel injector carriers.
IMPORTANT: After removal, blank the connectors of the sensitive
components immediately with plugs, to prevent the ingress
of dirt.
Use the correct tightening torques for the above components of the high
pressure fuel circuit, using a regularly inspected torque wrench:
• diesel injectors,
• high pressure fuel sensor,
• high pressure fuel lines.
The DW12TED4 engine requires particular care to be taken when working
on the fuel additive circuit.
Cleanliness of the fuel additive circuit:
• additive tank,
• additive injector supply and return pipes,
• additive injector.
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