Perkins Motor Operation and Maintenance Manual (English) - REED
Perkins Motor Operation and Maintenance Manual (English) - REED
Perkins Motor Operation and Maintenance Manual (English) - REED
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68 SEBU8325-01<br />
<strong>Maintenance</strong> Section<br />
Fuel System - Prime<br />
Fuel System - Prime<br />
i04429191<br />
If air enters the fuel system, the air must be purged<br />
from the fuel system before the engine can be<br />
started. Air can enter the fuel system when the<br />
following events occur:<br />
• The fuel tank is empty or the fuel tank has been<br />
partially drained.<br />
• The low-pressure fuel lines are disconnected.<br />
• A leak exists in the low-pressure fuel system.<br />
• The fuel filter is replaced.<br />
• A new injection pump is installed.<br />
Use the following procedure in order to remove air<br />
from the fuel system:<br />
1. Turn the keyswitch to the RUN position. Leave the<br />
keyswitch in the RUN position for 3 minutes. If<br />
a manual purging screw is installed, the purging<br />
screw should be slackened during priming the fuel<br />
system.<br />
NOTICE<br />
Do not crank the engine continuously for more than<br />
30 seconds. Allow the starting motor to cool for two<br />
minutes before cranking the engine again.<br />
4. Cycle the throttle lever from the low idle position to<br />
thehighidlepositionthreetimes.Thecycletime<br />
for the throttle lever is one second to six seconds<br />
for one complete cycle.<br />
Note: In order to purge air from the fuel injection<br />
pump on engines with a fixed throttle, the engine<br />
should be run at full load for 30 seconds. The load<br />
should then be decreased until the engine is at high<br />
idle. The process should be repeated three times.<br />
Repeating the process three times will assist in<br />
removing trapped air from the fuel injection pump.<br />
5. Check for leaks in the fuel system.<br />
i02699996<br />
Fuel System Primary Filter<br />
(Water Separator) Element -<br />
Replace<br />
Fuel leaked or spilled onto hot surfaces or electrical<br />
components can cause a fire. To help prevent<br />
possible injury, turn the start switch off when<br />
changing fuel filters or water separator elements.<br />
Cleanupfuelspillsimmediately.<br />
Illustration 36<br />
Injector nuts<br />
g01003929<br />
NOTICE<br />
Do not allow dirt to enter the fuel system. Thoroughly<br />
clean the area around a fuel system component that<br />
will be disconnected. Fit a suitable cover over disconnected<br />
fuel system component.<br />
2. Crank the engine with the throttle lever in the<br />
CLOSED position until the engine starts.<br />
Note: If necessary, loosen the union nuts (1) on the<br />
fuel injection lines at the connection with the fuel<br />
injector until fuel is evident. Stop cranking the engine.<br />
Tighten the union nuts (1) to a torque of 30 N·m<br />
(22lbft).<br />
3. Start the engine <strong>and</strong> run the engine at idle for 1<br />
minute.