◆
If fuel system components between fuel tank and fuel high-
pressure pump are removed or renewed, initial fuel filling
must be carried out.
◆
If a fuel pump, fuel line (between fuel tank and fuel high-
pressure pump) or the fuel filter is removed or renewed, the
fuel system must be bled before the engine is started for the
first time.
◆
If the high-pressure fuel pump is removed or renewed, the
fuel system must be bled before engine is started for the first
time.
◆
Clean tools and workbench etc. before working on injection
system.
◆
Thoroughly clean all unions and surrounding areas before
disconnecting.
◆
When removing components, seal all open connections im-
mediately with suitable clean sealing caps.
◆
Do not remove sealing caps from components until immedi-
ately prior to installation. Removed components should be
kept in new, sealable plastic bags (use the original new part
packaging if possible).
◆
Before installation, check injectors and their surroundings
visually; they must be undamaged and free of lint. Make
sure the injector bores in the cylinder head are clean. Wipe
out if necessary using a clean cloth, taking care not to cause
damage. Do not use sharp objects of any kind.
◆
If high-pressure lines are not renewed, they must be labelled
on removal. High-pressure fuel lines must always be re-in-
stalled in their original positions (i.e. on the same cylinder).
◆
The following components and seals/O-rings must always be
renewed when injectors are removed and installed: “copper
seal”, “O-ring for injector bore”, “injector return clip” “also to
be used if necessary:” “O-ring for injector return connection”
“, injector seal”.
◆
The following components and seals/O-rings must renewed
on renewing an injector: “ included in the scope of supply
are ” “copper seal”, “O-ring for injector bore”, “injector return
clip” “also to be used if necessary” “O-ring for injector return
line”“, injector seal”.
◆
Always fit new copper seals for the injectors. Check all new
O-rings for damage before installing. Lubricate O-rings light-
ly with assembly oil or clean engine oil before installing.
◆
Take care not to damage the injectors when removing the
old copper seals.
◆
Align high-pressure lines free from stress. First tighten all
unions hand-tight and then tighten to torque.
◆
On high-pressure lines, tools may only be used for loosening
or tightening.
◆
Never attempt to reshape high-pressure fuel lines.
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Industriemotoren - Industrial Engines 2009
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Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
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Repair Group 23 - Mixture preparation - injection