R 12-11-28-650-003 Pressure Refuel with Automatic Control
R 20-28-00-912-002 Electrical Bonding of Components With Conductive
R Bolts and Screws in the Tanks
R 28-10-00-910-001 Safety Procedures When You Do Work in a Fuel Tank
R 28-10-00-910-002 Access to the Fuel Tanks and the Work Areas
R 28-12-47-000-001 Removal of the NACA Vent Intake
R 28-12-47-400-001 Installation of the NACA Vent Intake
R 28-25-00-650-001 Pressure Defuel
R 28-25-00-869-001 Fuel Transfer
R 57-27-11-000-002 Removal of the Access Panel (540HB, 540JB, 540KB,
R 540LB, 540MB, 540NB, 540PB, 540QB, 540RB, 550AB,
R 550BB, 550CB, 550DB, 560AB, 640HB, 640JB, 640KB,
R ....)
R 57-27-11-400-002 Installation of the Access Panel (540HB, 540JB,
R 540KB, 540LB, 540MB, 540NB, 540PB, 540QB, 540RB,
R 550AB, 550BB, 550CB, 550DB, 560AB, 640HB, 640JB,
R ....)
R 28-12-43-991-003 Fig. 403
R 3. Job Set-up__________
R Subtask 28-12-43-941-059
R A. Safety Precautions
R WARNING : OBEY THE SAFETY PROCEDURES WHEN YOU DO WORK IN A FUEL TANK._______
R (1) You must obey the fuel safety procedures (Ref. TASK 28-10-00-910-001)
R when you do work in a fuel tank.
R (2) Make sure that the safety barriers are in position.
R Subtask 28-12-43-860-055
R B. Aircraft Maintenance Configuration
R (1) Make sure that the applicable fuel tank is defueled (Ref. TASK 28-25-
R 00-650-001).
R (2) Make sure that the access platform is below the applicable access
R panels 540RB(640RB) and 550AB(650AB).
R (3) Make sure that the applicable access panels are removed (Ref. TASK
R 28-10-00-910-002) ,(Ref. TASK 57-27-11-000-002), (Ref. TASK 28-12-47-
R 000-001):
R - FOR 212QM
R 540RB, 550AB
R - FOR 213QM
R 640RB, 650AB.
R 4. Procedure_________
R (Ref. Fig. 403/TASK 28-12-43-991-003)
R Subtask 28-12-43-420-056
R A. Preparation for Installation
R WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL_______
R MATERIALS ONLY WITH A GOOD SUPPLY OF AIR.
R OBEY THE MANUFACTURERS INSTRUCTIONS.
R PUT ON PROTECTIVE CLOTHING.
R DO NOT GET THEM IN YOUR MOUTH.
R DO NOT SMOKE.
R DO NOT BREATHE THE GAS.
R THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT.
R GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
R (1) Clean the component interface and/or the adjacent area with a
R MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS
R (Material No. 11-004).
R (2) Do an inspection of the component interface and/or the adjacent area.
R (3) Make sure that the parts retained from the removed component are
R clean and in the correct condition.
R (4) Lubricate the new O-ring (6) with FUELS (Material No. 01-001) or
R COMMON GREASE (Material No. 04-012).
R Subtask 28-12-43-420-053
R B. Installation of the Float Vent Valve 212QM(213QM)
R (1) Install the new O-ring (6) on the vent float-valve (5).
R (2) Install the vent float-valve (5) on Rib 22 with the bolts (3) and the
R nuts (1).
R (3) Install the bonding strap (2) on the vent float-valve (5) with the
R bolt (4) (Ref. TASK 20-28-00-912-002).
R (4) Apply SEALANTS (Material No. 09-007) to the nuts (1) and the bolts
R (3).
R Subtask 28-12-43-710-053
R C. Operational Test
R (1) Make sure that the vent float-valve (5) moves freely.
R 5. Close-up________
R Subtask 28-12-43-410-054
R A. Close Access
R (1) Make sure that the work area is clean and clear of tool(s) and other
R items.
R (2) Install the applicable access panels (Ref. TASK 28-10-00-910-002),
R (Ref. TASK 57-27-11-400-002), (Ref. TASK 28-12-47-400-001):
R - FOR 212QM
R install 540RB, 550AB
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