3-8 Scheduled Maintenance TP-5648 8/93
Bleeding the Fuel System
If the generator set engine runs out of fuel, air leaks
developin the suctionside of the fuel system,orthe fuel
filter is replaced, it will be necessary to bleed the entire
system to prevent starting failures and/or erratic
operation. See Figure 3-7 and refer to the following
procedure.
1. Disconnect lead 71A from the starter motor to
disable cranking during the bleeding procedure.
2. Fill the fuel tank.
3. Loosenthesmall ventscrewonthefuelfilter afew
turns.
4. Using start switch on the controller, operate the
fuel pump until fuel, free from air bubbles, flows
from this point. Tighten vent screw.
5. Loosen the line connection (bleed point) at fuel
injection pump inlet.
6. Using start switch on the controller, operate the
fuel pump until fuel, free from air bubbles, flows
from this point. Tighten line connection.
7. Reconnect lead 71A to the starter motor.
1-932
1
2
3
4
5
1. Fuel Injection Pump
2. Line Connection (Bleed Point)
3. Fuel Filter
4. Electric Fuel Pump
5. Vent Screw
Figure 3-7. Bleeding the Fuel System
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