**ON A/C ALL
 TASK 28-46-16-400-001
 Installation of the Overflow Sensor
 WARNING : MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING
_______
 NOTICES ARE IN POSITION.

 WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
 GEAR.

 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific  safety barriers
 No specific access platform 4.0 m (13 ft. 1 in.) R No specific Torque Wrench : range 0.00 to 1.20 m.daN R (0.00 to 9.00 lbf.ft)
 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 09-007  USA MIL-S-4383 BRUSHABLE FUEL RESISTANT COATING (Ref. 20-31-00)
 Material No. 11-004  USA MIL-T-81533
 1.1.1TRICHLOROETHANE (METHYL CHLOROFORM)
 (Ref. 20-31-00)

 Material No. 19-003  USA AMS 3819
 LINT-FREE COTTON CLOTH (Ref. 20-31-00)

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 C. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
12-11-28-650-003 Pressure Refuel with Automatic Control 28-10-00-910-001 Safety Procedures When You Do Work in a Fuel Tank 28-10-00-910-002 Access to the Fuel Tanks and the Work Areas 28-12-45-000-001 Removal of the Panel Assembly 550CB(650CB) 28-12-45-400-002 Installation of the Panel Assembly 550CB(650CB) 28-25-00-650-001 Pressure Defuel 28-25-00-650-003 To Drain Remaining Fuel from the Wing Tanks and the
 Center Tank
 28-25-00-869-001 Fuel Transfer
 28-46-00-740-001 Functional (BITE) Test

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 28-46-16-991-001 Fig. 401
 **ON A/C 301-399,
 28-46-16-991-001-A Fig. 401A
 **ON A/C ALL
 3. Job Set-up
__________
 Subtask 28-46-16-941-053
 A. Safety Precautions
 WARNING : OBEY THE SAFETY PROCEDURES WHEN YOU DO WORK IN A FUEL TANK.
_______
 (1)
 You must obey the fuel safety procedures (Ref. TASK 28-10-00-910-001) when you do work in a fuel tank.

 (2)
 Make sure that the safety barriers are in position.

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 B. Aircraft Maintenance Configuration
 (1)
 Make sure that the remaining fuel has been drained from the applicable vent surge tank (Ref. TASK 28-25-00-650-003).

 (2)
 Make sure that the access platform is below the applicable access panel 550CB (650CB).

 (3)
 Make sure that the applicable access panel 550CB (650CB) is removed (Ref. TASK 28-10-00-910-002), (Ref. TASK 28-12-45-000-001).

 Subtask 28-46-16-865-051
 C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
 -------------------------------------------------------------------------------

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 49VU FUEL/XFR VALVE1/WING/R 2QP A11
 49VU FUEL/XFR VALVE1/WING/L 1QP A10
 **ON A/C 301-399,
 49VU FUEL/AFT LOW LVL/& OVFL/WING R 44QJ A11
 49VU FUEL/AFT LOW LVL/& OVFL/WING L 43QJ A10
 **ON A/C ALL
 4. Procedure
_________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 (Ref. Fig. 401/TASK 28-46-16-991-001)
 1EFF : ALL 1 28-46-16Page 409 1 1 Aug 01/05 1 1 1CES 1 **ON A/C 301-399,

 (Ref. Fig. 401A/TASK 28-46-16-991-001-A)
 **ON A/C ALL
 Subtask 28-46-16-420-051
 A. Preparation for Installation
 WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL
_______ MATERIALS ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
　
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