(c) Open draincock (2), at bottom of
fuel filter/water separator, and allow
approximately one pint (0.473 l) of liquid to
drain off into a container.
(d) If you notice large amounts of
water and/or impurities, you should allow
one pint (0.473 l) fuel to drain until fuel is
(e) If fuel tank(s) are found to be
contaminated with water and/or impurities,
complete draining will be necessary. This
should be coordinated with organizational
maintenance. The fuel filter/water separator
element should also be serviced at this time,
(f) After required service is completed, close draincock (1) at fuel inlet line and
draincock (2) at bottom of fuel filter/water separator.
f. Priming Fuel System.
(1) It is necessary to prime the fuel system whenever the fuel filter/water separator
element is replaced, and/or after a complete draining operation.
(5) Place a container under air purge draincock (4). Operate hand primer pump (5)
to remove fuel from the fuel injection pump reservoir. Continue pumping until the flow
stops, all air is expelled, and fuel begins to flow again. This requires approximately 90
seconds. Stop hand primer pump (5) operation and close air purge draincock (4). Dispose
of waste fuel properly.