TM 10-3950-672-24-2
Fuel System Replacement Procedures
A certain amount of air will be entrapped in the system during replacement of any of the system components. After
replacement of a component, bleed the system according to the following procedure.
Controlled venting is provided at the injection pump
through the fuel drain manifold. Small amounts of air
introduced by changing the filters or injection pump
supply line will be vented automatically, if the fuel filter
is changed in accordance with the instructions.
However, manual bleeding will be required if:
The fuel filter is not filled prior to installation.
Injection pump is replaced.
High pressure fuel line connections are
loosened or lines replaced.
Initial engine start up or start up after an
extended period of no engine operation.
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