Piper COMANCHE PA-24-180 Service Manual page 518

e To reinstall pump. insert the pump body through the panel. install the piston assembly and secure
the face nut. Position the pump and secure the locknut behind the panel Connect the supply lines.
8-34. Prime Jets.
a
To remove the prime jets. disconnect the supply line from each jet With a deep socket and light
pressure, remove the jet from the cylinder
b
To clean the jet. soak in a carbon remover solution long enough to loosen any dirt and blow clean
with air pressure Do not use sharp objects or wire brush to clean the jet tube
c.
Install the jet finger tight to assure that the threads ar: not crossed and then torque 60 to 125
inch-pounds Align and install the fuel supply lines. tighten to a snug fit.
NOTE
Should further fuel stoppage of the primer system exist. check the
supply lines for stoppage. bent or collapsed walls
PIPER COMANCHE SERVICE MANUAL
8-35 Fuel Flow Gauge Damper (Fuel Injection System). There are two locations along the fuel flow gauge
pressure line which have a damper installed One is between the fire wall and the gauge. while the other is
between the flow divider and the engine baffle The dampers consist of stainless steel wire installed inside
the line at the two locations described abo\e. These dampers are in the line to prevent surging of the flow
gauge. and must not be removed except for cleaning purposes only
8-36 Troubleshooting. Troubles peculiar to the Comanche fuel system are listed in Table VIIl-IV
along with their probable causes and suggested remedies When troubleshooting, check from the fueJ
supply to the items affected. If no trouble is found by this method, the trouble probably exists insi
individual pieces of equipment. they may then be removed from the aircraft and an identical unit o
units, tested and known to be good. installed in their place Troubleshooting the fuel quantity indicator
may be found in Section XI. Instruments The electrical diagrams for each fuel system may be found in
Section IX. Electrical System
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FUEL
SYSTEO
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