Service Manual

Injector ISB, ISBe and QSB (Common Rail [...]
Page 6-70 Section 6 - Injectors and Fuel Lines - Group 06
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High Mount Fuel Drain Manifold with Two Banjo
Fittings
5.9L Engines with EGR
These engines have a banjo fitting in the fuel return port
at the back of the cylinder head.
If the pressure relief valve fuel return flow measures zero,
proceed with this procedure. If the pressure relief valve
fuel return flow is not zero, use the following procedure
for reseating or replacement instructions. Refer to
Procedure 006-061 in Section 6.
The injector and the fuel rail pressure relief valve share
the same return line. Therefore, it is necessary to isolate
the fuel rail pressure relief valve flow from the fuel injector
return flow.
Remove the banjo bolt from the fuel rail pressure relief
valve.
Install the pressure relief valve return flow hose, Part
Number 3164617, in place of the banjo bolt.
Drain any fuel into a drain pan.
Follow the fuel drain line from the back of the cylinder
head to the fuel return manifold.
Remove the banjo bolt from the fuel injector drain line at
the fuel return manifold. Install the fuel drain hose, Part
Number 3164618, in place of the banjo bolt.
Place the end of the fuel injector drain line fuel return flow
hose in a graduated cylinder, Part Number 3823705, and
collect return flow.
High Mount Fuel Drain Manifold with One Banjo
Fitting
6.7 L Engines in Industrial Applications
These engines have a banjo fitting in the fuel return port
at the back of the cylinder head.
If the pressure relief valve fuel return flow measures zero,
proceed with this procedure. If the pressure relief valve
fuel return flow is not zero, use the following procedure
for reseating or replacement instructions. Refer to
Procedure 006-061 in Section 6.