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Fuel filter- silver tuna can located on the left side on firewall
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Fuel pressure switch- located on top of the fuel filter, looks like
a big fire detector
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Fuel flow transmitter- grey rectangular box in the center of the
firewall
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Air conditioning switches- located on the lower right corner of the firewall,
low-pressure switch is the square copper one, high pressure switch is the
black C/B one
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Fuel scavenge pump (EPA pump)- located on firewall above the A/C
switches (may be labeled “ electric fuel pump”
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Flame arrestor-located above the EPA pump on firewall. Sits horizontally
and looks like a slim CO2 sylinder (Note fire detector #1 below)
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Air conditioning condenser- look directly down in the engine compartment,
big rectangular shaped, radiator looking, usually with chicken wire covering
it
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Fuel scavenge tank (EPA collector tank) - can’t see it, it’s below
the A/C condenser
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Engine oil filter - located on the main oil tank, round access, just
to the right of the PCL cable
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Auxiliary oil tank- located below the main oil tank, looks like a
big grey can of oil
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PCL cable and boot- cable is inside boot and is attached to the cam assembly.
The boot is a black rubber like material and looks like a long skiny accordion.
Check the boot for tears or holes
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P3 air filter- located just to the left of the PCL cable, looks like a
big pill bottle, grey, has two P3 air lines (inlet/outlet) running into
it
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Primary fuel pump- grey, marked “pump, rotary, power driven” (pumps
around 800PSI)
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Fuel control unit- mounted to the primary fuel pump, looks like a
carburetor.
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EPL cable- grey cable, attached to a yellow/green EPL brace, and cable
goes to the back of the fuel control unit
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N1 tach generator - black cylinder object behind the EPL brace
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Engine oil pressure transducer - mounted on the stbd engine support
frame, (all by itself) kinda l looks like a spartk plug, thing closest
to you when looking in from the right
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Engine oil temperature probe - directly below the P3 air filter,
has some wires running out of it
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Condition lever cables - two silver cables running on top of engine.
One runs forward to the prop primary governor, and the other runs down
to the top of the fuel control unit (for fuel on/off)
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ITT trim harness (compensating probe) - long silver rod, horizontal, just
forward of the FOD screen, runs forward toward the combustion chamber,
aft portion is mounted on the Beta push-pull control cable line (cable
is inside) Purpose- trim harness compensates for the sampling error in
the 8 htermocouples to give a fixed ITT indication.
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PY air line- black line, starts behind the fuel control unit and runs up
toward the oil to fuel heater then forward on top of engine to the fuel
topping governor and torque limiter (PY is high / P3 is low)
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Fuel return lines- 3 big orange lines below the engine compressor
section
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Cam assembly - provides an attach point for the PCL cable and BETA push
- pull control linkage and connects them with the fuel control unit (FCU)
through the FCU control rod (11" rod). Check the 11" rod for freedom of
movement.
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