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Fuel System Maintenance
Compare
recorded
inspection with the following data:
Unmetered or Pump Pressure (PSI)
6.0 - 8.0.........................................@600 RPM
37.0 - 40.0 ....................................@2700 RPM
Metered fuel pressure (PSI)
15.0-16.5 ..................................... @2600 RPM
Fuel Flow (GPH)
34.8-36.8 ..................................... @2600 RPM
Fuel Flow (Lbs./Hr.)
204-216 ....................................... @2600 RPM
During operational inspection did all fuel
system drains function properly........
NOTE...
Unmetered or pump pressure must be checked with
external calibrated gauges connected to the fuel
system. Do not use airframe cockpit gauges when
checking fuel pressures.
If the fuel injection system is found to be in good
physical condition and operational inspection
readings conform to the specified flows and
pressures, the engine fuel system can be approved
for return to service.
FIGURE 9-6. GENERAL FUEL INJECTION SEALANT APPLICATION
findings
of
operational
If the fuel system is not functioning properly, see
section
2,
chapter
Troubleshooting" to determine the cause and the
procedure for correcting it."
Throttle And Mixture Control Levers
To insure proper
accelerated wear, the fuel metering unit lever, fuel
pump mixture control lever and control cable
connections must be inspected for excessive play
which can cause lost motion and breakage of parts
due to vibration. Inspect the pivot points of levers
and connections for debris, old grease and oil.
Clean pivot point areas thoroughly using clean
stoddard solvent. After cleaning, dry each area
using compressed air.
WARNING
Anytime fuel system component lever
attaching
hardware,
bushings
have
reassembled, the fuel system must be
checked and adjusted in accordance with
section
2,
chapter
Adjustment" and tested in accordance with
section 2, chapter 18 "Post Maintenance
Operational Test." This test is Mandatory.
Fuel System
4,
"Fuel
System
operation and to prevent
levers
or
lever
been
replaced
18
"Fuel
System
or
9-9
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