Fuel System - Prime - Perkins 904F-E28T Operation And Maintenance Manual

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Note: For more information on accurate oil level
check, refer to this Operation and Maintenance
Manual, "Engine Oil Level - Check".

Fuel System - Prime

Note: Refer to Systems Operation, Testing, and
Adjusting, "Cleanliness of Fuel System
Components" for detailed information on the
standards of cleanliness that must be observed
during ALL work on the fuel system.
Ensure that all adjustments and repairs are
performed by authorized personnel that have had the
correct training.
NOTICE
Do not crank the engine continuously for more than
30 seconds. Allow the starting motor to cool for two
minutes before cranking the engine again.
If air enters the fuel system, the air must be purged
from the fuel system before the engine can be
started. Air can enter the fuel system when the
following events occur:
• The fuel tank is empty or the fuel tank has been
partially drained.
• The low-pressure fuel lines are disconnected.
• A leak exists in the low-pressure fuel system.
• The fuel filter has been replaced.
Electric Fuel Priming Pump
Use the following procedure to remove air from the
fuel system:
1. Ensure that the fuel system is in working order.
Check that the fuel supply valve (if equipped) is in
the "ON" position.
2. Turn the keyswitch to the "RUN" position.
3. The keyswitch will allow the electric priming pump
to operate. Operate the electric priming pump. The
ECM will stop the pump after 2 minutes.
4. Turn the keyswitch to the "OFF" position. The fuel
system should now be primed and the engine
should be able to start.
5. Operate the engine starter and crank the engine.
After the engine has started, operate the engine at
low idle for a minimum of 5 minutes. Ensure that
the fuel system is free from leaks.
Note: Operating the engine for this period will help
ensure that the fuel system is free of air.DO NOT
loosen the high-pressure fuel lines to purge air
from the fuel system. This procedure is not
required.
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After the engine has stopped, you must wait for 10
minutes to allow the fuel pressure to be purged from
the high-pressure fuel lines before any service or
repair is performed on the engine fuel lines. The 10
minute wait will also allow static charge to dissipate
from the low-pressure fuel system. If necessary,
perform minor adjustments. Repair any leaks from
the low-pressure fuel system and from the cooling,
lubrication, or air systems. Replace any high-
pressure fuel line that has leaked. Refer to
Disassembly and Assembly Manual, "Fuel Injection
Lines - Install".
If you inspect the engine in operation, always use the
proper inspection procedure to avoid a fluid
penetration hazard. Refer to Operation and
Maintenance Manual, "General hazard Information".
If the engine will not start, refer to Troubleshooting,
"Engine Cranks but will not Start".
Mechanical Fuel Priming Pump
Use the following procedure to remove air from the
fuel system:
1. Ensure that the fuel system is in working order.
Check that the fuel supply valve (if equipped) is in
the "ON" position.
2. Operate the hand priming pump. Count the
number of operations of the pump. After
approximately 80 depression of the pump stop.
Note: As the fuel system is primed, the pressure will
increase within the fuel system and this increase in
pressure can be felt during priming.
3. The fuel system should now be primed and the
engine should be able to start.
4. Operate the engine starting motor and crank the
engine. After the engine has started, operate the
engine at low idle for a minimum of 5 minutes.
Ensure that the fuel system is free from leaks.
Note: Operating the engine for this period will help
ensure that the fuel system is free of air.DO NOT
loosen the high-pressure fuel lines to purge air
from the fuel system. This procedure is not
required.
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Maintenance Section
Fuel System - Prime