R (2) Make sure that the safety barriers are in position.
R Subtask 28-21-43-865-053
R B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and
R tagged
R -------------------------------------------------------------------------------
R PANEL DESIGNATION IDENT. LOCATION
R -------------------------------------------------------------------------------
R 121VU FUEL/L WING TK/PUMP2 SPLY 7QA N26
R 121VU FUEL/L WING TK/PUMP1 SPLY 1QA N23
R 121VU FUEL/R WING TK/PUMP2 SPLY 8QA Q26
R 121VU FUEL/R WING TK/PUMP1 SPLY 2QA Q23
R 123VU L WING TK/PUMP 1/STBY SPLY 11QA AD12
R 123VU R WING TK/PUMP 1/STBY SPLY 12QA AE12
R Subtask 28-21-43-860-052
R C. 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 remaining fuel has been drained from the
R applicable fuel tank (Ref. TASK 28-25-00-650-003).
R (3) Make sure that the access platform is below the applicable access
R panel 540AB(640AB).
R (4) Make sure that the applicable wing access panel is removed (Ref. TASK
R 28-10-00-910-002), (Ref. TASK 57-27-11-000-001):
R - FOR 149QM, 150QM
R access panel 540AB
R - FOR 152QM, 151QM
R access panel 640AB.
R (5) Make sure that the applicable RIB2 surge door is open:
R - FOR 149QM, 150QM
R open the surge door 540BZ
R - FOR 152QM, 151QM
R open the surge door 640BZ.
R (6) Make sure that the HOOK-COVER (RIB2-SURGE DOORS) (98D57004014000) is
R on the applicable RIB2 surge door.
R 1EFF : 301-399, 1 28-21-43Page 419 1 1 May 01/04 1 1 1CES 1
R 4. Procedure_________
R (Ref. Fig. 402/TASK 28-21-43-991-002)
R Subtask 28-21-43-420-053
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 interfaces and the adjacent areas with a
R MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS
R (Material No. 11-004).
R (2) Make sure that the parts retained from the removed component are
R clean and in the correct condition.
R (3) Do an inspection of the component interface and/or the adjacent area.
R
R (4) FOR 149QM, 152QM
R - lubricate the new O-ring (6) and the new O-ring (8) with FUELS
R (Material No. 01-001) or COMMON GREASE (Material No. 04-012).
R
R (5) FOR 150QM, 151QM
R - lubricate the new O-ring (6) and the new O-ring (8) with FUELS
R (Material No. 01-001) or COMMON GREASE (Material No. 04-012).
R Subtask 28-21-43-420-051
R B. Installation of the Fuel-Pump Check-Valve 149QM(152QM), 150QM(151QM)
R (1) Install the O-ring (6) on the check valve (5).
R (2) Install the O-ring (8) on the fuel pipe (9).
R 1EFF : 301-399, 1 28-21-43Page 420 1 1 May 01/04 1 1 1CES 1 1EFF : 301-399, 1 28-21-43Page 421 1 1 May 01/04 1 1 1CES 1 1EFF : 301-399, 1 28-21-43Page 422 1 1 May 01/04 1 1 1CES 1R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
R (3) Install the check valve (5) on the related fuel pump canister. Make
R sure that the TOP legend on the check valve is at the top of fuel
R pump canister.
R (4) Install and tighten the bolts (4).
R (5) Put the fuel pipe (9) in position on the check valve (5).
R (6) Install the fuel pipes that you removed for access (Ref. TASK 28-00-
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