(b)
Do these recommended steps to install the sleeve:
1) Push a wire (referred to as the fish wire), such as lock wire or a stiff electrical wire through the TFE-2X6TW sleeve.
2) Use the fish wire to pull two strings through the TFE-2X6TW sleeve. 3) Tie one string to each TFE-2X14SW sleeve.
NOTE: The knot shown in figure 603 is recommended.
____
NOTE: If you are re-installing the old float switch,
____ then start the knot at a location that will be about 3 inches (76.2 millimeters) outside of the conduit on the airplane. Use the mark you made before you removed the wire from the airplane to find this location.
4) Pull one of the float switch wires and its TFE-2X14SW sleeve through the TFE-2X6TW sleeve with the string.
NOTE: This is easiest with two people, one to pull the
____ string, and the other to hold the opposite end of the sleeve.
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5) Pull the second float switch wire and its TFE-2X14SW sleeve through the TFE-2X6TW sleeve with the string. a) Pull until the TFE-WX6TW sleeve touches the base of the
float switch.
NOTE:____Keep the strings tied to the wires. You will use this string to help pull the wires back through the conduit.
6) Do NOT cut the TFE-2X6TW sleeve. a) Keep the full length of sleeve until the float switch is installed in the airplane.
S 426-028
(10) Install the float switch in the airplane with the procedure in AMM 28-21-71/401 and with these additional steps:
(a) Tie a short string around the TFE-2X6TW sleeve.
NOTE: It is recommended to use the knot shown in Figure 603.
____
NOTE: If you are re-installing the old float switch, then
____ start the knot at a location that will be there about 3 inches (76.2 millimeters) outside of the conduit on the airplane. Use the mark you made before you removed the wire from the airplane to find this location.
(b) Tie the strings you installed previously to the strings you have through the conduit.
NOTE: Remember to put the nut and washers over the wires
____
(AMM 28-21-71/601).
(c)
Pull the wires through the conduit.
(d)
Some airplanes have a rubber plug in the fitting at the front spar. 1) If your airplane had this rubber plug, do NOT re-install
it.
NOTE: Removing the plug permits the Teflon sleeve to
____
come out of the conduit.
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(e) After the wires are in the conduit, cut the TFE-2X6TW sleeve and the wires so that they are sufficiently long to tie to the wire bundle on the front spar. 1) You must tie a MINIMUM of 3 inches (76.2 millimeters) of
the sleeve to the wire bundle with a minimum of four ties.
NOTE: If the float switch wires are too short, then
____ make a small cut in the TFE-2X6TW sleeve. Push the wires out of this cut and splice them. When you complete the splice, push the wires back in the sleeve. Use tape (or equivalent) to seal the cut in the sleeve.
2) When you splice the float switch wires, make a moistureproof splice in a fuel vapor area as shown in SWPM 20-30-12.
F. Put the Airplane Back to Its Usual Condition
S 866-029
(1) Do the steps in AMM 28-21-71/401 to put the airplane back to its usual condition.
TASK 28-21-71-796-030
4. Center Tank Float Switch Electrical Conduit Inspection______________________________________________________
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