(b)
The compensator unit 1) The wires connecting the compensator unit to the FQIS 2) The plug connecting the compensator unit to the wire bundle 3) The receptacle connecting the compensator unit to the wire bundle.
SYSTEM TESTER SWITCH POSITION MINIMUM RESISTANCE Megohms
GND/HIZ (Airplane Ground to Hi-Z) GND/LOZ (Airplane Ground to Tank Unit Lo-Z) SH/LOZ (Coax Shield to Tank Unit Lo-Z) SH/HIZ (Coax Shield to Hi-Z) GND/SH (Airplane Ground to Coax Shield) 10 10 1 1 10
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SYSTEM TESTER SWITCH POSITION MINIMUM RESISTANCE Megohms
GND/LOZ (Airplane Ground to Compensator Lo-Z) SH/LOZ (Coax Shield to Compensator Lo-Z) 10 10
H. Put the Airplane Back To Its Usual Condition
(1)
Disconnect the test harness from the bussing plug.
(2)
Remove the test harness and the system tester.
(3)
Connect the electrical connector to the bussing plug.
(4)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a) P6 Main Power Distribution Panel
1) EP GND FUELING
2) QTY
(5)
Refuel the fuel tank if it is necessary (Ref 12-11-00/301).
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT REMOVE THE SAFETY LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(6)
Remove the leading edge flaps (Ref 27-81-00/201).
WARNING: ENSURE PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAPS. THE FLAPS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(7)
Retract the leading edge flaps (Ref 27-81-00/201).
(8)
Remove the electrical power if it is not necessary for other tasks (Ref 24-22-00/201).
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FUEL TANK BULKHEAD (SPAR) RECEPTACLE WIRE HARNESS -REMOVAL/INSTALLATION
1. General
A. Use extreme care when performing maintenance as damage to the receptacle requires replacement of wire harness assembly.
2. Equipment and Materials
A. Clean, lint-free rags
B. Aliphatic Naphtha (cleaning solvent) - TT-N-95 (Ref 20-30-31)
C. Leading Edge Flap Actuator Lock - F80048-89 (Preferred), F80048-90 (Preferred), F80048-84 (Alternate), and F80048-36 (Alternate)
D. BMS 5-26 type II sealant.
3. Prepare for Removal
A. Open GRD FUELING and FUEL QTY circuit breakers on aft overhead panel P6.
B. For tank 1 or 2 bulkhead (spar) receptacle wire harness, extend flaps and install leading edge flap locks.
WARNING: REFER TO 27-81-0 MP FOR LOCK INSTALLATION PROCEDURE. FLAPS ARE FAST ACTING AND CAN CAUSE SERIOUS INJURY TO PERSONNEL.
C. Defuel and purge applicable fuel tank (Ref 28-23-0 MP, 28-10-0 MP).
D. Remove tank and compensator unit bussing plug per 28-41-41 R/I.
4. Remove/Install Fuel Tank Bulkhead (Spar) Receptacle Wire Harness (Fig. 401)
A. Enter applicable fuel tank with replacement wire harness.
B. While receptacle is being supported from inside tank, from outside tank, remove six bulkhead (spar) receptacle mounting screws, and pull receptacle free inside tank.
C. Ensure mounting area is free of paint or primer. Using clean rags moistened with naphtha, clean receptacle mounting area on bulkhead (spar), replacement receptacle face and replacement receptacle O-ring groove. Install new O-ring.
D. Position receptacle in bulkhead (spar) so that pin numbers are right side up. While receptacle is being supported from inside tank, from outside tank, install and tighten receptacle mounting screws 65 to 90 pound-inches.
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Fuel Tank Bulkhead (Spar) Receptacle Wire Harness Installation 513
28-41-101 Figure 401 Jun 20/84
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
E. Progressively remove existing wire harness and install replacement wire harness.
NOTE: As existing wire harness is being removed, install replacement wire harness to ensure proper clamping and routing.
F. At tank units and compensator units install replacement harness connectors and tighten to 8 +1 pound-inches.
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