(b)
Panel 7401 (Center tank, right pump)
S 016-049
(5) Do these steps for the aft fuel boost pump for the No. 2 tank and for the right fuel boost pump for the center tank:
NOTE: To improve your access to the wiring, you can remove the
____ fuel boost pump (AMM 28-22-41/401). But the procedure to install the pump will cause additional work. A special bonding resistance meter is necessary to install the pump. (Refer to SWPM 20-20-00, Test Procedures for Electrical Bonds, Conditions for Bond Tests in an Explosion Hazard Area).
(a)
Disconnect the electrical connector from the fuel boost pump.
(b)
Disconnect the wire clamps from the wiring.
(c)
Remove the wires, with the socket contacts attached, from the electrical connector (SWPM 20-61-11). 1) Keep the electrical connector if it does not have damage.
(d)
Tie a string (lacing tape or equivalent) to the end of the wiring.
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(e) Put tape (as necessary) on the end or the wires and socket contacts so that they will go smoothly through the conduit.
NOTE: Use a string that is approximately 15 feet long.
____ Attach the end of the string (that is not attached to the wiring) to the pump or the airplane so you will not accidentally pull it through the conduit.
NOTE: If your airplane has a single ground wire in
____ addition to the three conductor cable, then pull the ground wire out of the electrical conduit before you pull the three conductor cable out.
S 016-050
(6) Do these steps at the front spar:
(a)
Hold the large hex nut that is on the conduit at the front spar with a wrench.
(b)
Disconnect the elbow from the front spar of the wing.
NOTE: It is recommended that you do not try to remove the
____ nut and grommet from the end of the elbow. If you remove the nut, it is possible to break the elbow.
(c) Carefully pull the wiring out of the conduit.
D. Wiring Inspection Procedure
S 216-078
(1)
If the Teflon sleeve is installed on the wiring (SB 28A1120 Rev 3), look carefully to make sure that there are no holes in the Teflon sleeve.
S 426-079
(2)
If there are no holes in the Teflon sleeve, the inspection is complete.
(a) Do this task: wiring installation procedure.
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S 026-080
(3)
If there are holes in the Teflon sleeve, then remove the Teflon sleeve (SB 28-1120), to do an inspection of the wiring.
S 216-052
(4)
Look carefully at the part of the electrical cable that was installed in the conduit.
(a) If you can see the red, yellow, blue, or green wire insulation through the outer jacket of the electrical cable, then you must replace the electrical cable. Do not make repairs to the part of the electrical cable that goes in the conduit.
NOTE: You have two options on where you splice the new
____ electrical cable to the old electrical cable. 1) You can splice it where it joins the main wire bundle on the front spar. 2) You can splice it where the electrical cable is now spliced in the fuselage. Do not put a splice in a location that will be in the conduit or in the elbow. Make sure the splices and all wiring are a minimum of two inches from the control cables. Make the splices (including staggering them) as shown in SWPM 20-30-12. If you splice the wires at the front spar then you must use the procedure for a moisture proof splice in a fuel vapor area. Also, the splice must be after (away from the direction of the boost pump) the first wire clamp on the front spar. This will permit the Teflon sleeve (installed below) to go through the wire clamp. If you splice the electrical cable in the fuselage, then use a general purpose splice. Install the electrical cable as shown in SWPM 20-10-11.
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