3. Job Set-up
__________
Subtask 28-11-41-941-073
A. Safety Precautions WARNING : OBEY THE SAFETY PROCEDURES WHEN YOU DO WORK IN A FUEL TANK.
_______
(1) You must obey the safety precautions (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.
Subtask 28-11-41-860-058
B. Aircraft Maintenance Configuration
(1)
Make sure that the applicable wing tank is defueled (Ref. TASK 28-25-00-650-001) .
(2)
Make sure that the remaining fuel has been drained from the applicable wing tank outer cell (Ref. TASK 28-25-00-650-003).
(3)
Make sure that the access platform is below the applicable access panel 540KB, 640KB.
(4)
Make sure that the applicable access panel 540KB, 640KB is removed (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-27-11-000-002).
4. Procedure
_________
**ON A/C 001-001, 051-052,
(Ref. Fig. 402/TASK 28-11-41-991-002) R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499, Post SB 28-1077 For A/C 001-001,051-052, (Ref. Fig. 402A/TASK 28-11-41-991-002-A)
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-11-41Page 419 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
Subtask 28-11-41-420-053
A. Preparation for Installation
(1)
Clean the component interfaces and/or the adjacent area with a MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-026).
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(4)
Apply FUELS (Material No. 01-001) or COMMON GREASE (Material No. 04-012) to the new O-ring (3), O-ring (7) and O-ring (6).
**ON A/C 001-001, 051-052,
Subtask 28-11-41-420-058
B. Installation of the Water Drain Valve
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.
(1)
Install the O-ring (3) on the elbow (1).
(2)
Install the elbow (1) in the water drain valve (5) and tighten the nut (2) by hand.
(3)
Put the bolt (8) and the bolts (9) in the correct positions.
(4)
Install one O-ring (7) on each bolt (8) and (9) and the O-ring (6) on the water drain valve (5).
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-11-41Page 420 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1
(5)
Install the water drain valve (5) then install and tighten the nuts (4).
(6)
Carefully turn the elbow (1) so that the projection at the end lightly touches the bottom skin. Make sure that the angled inlet of the elbow (1) is parallel with the bottom skin.
(7)
Hold the elbow (1) in position and TORQUE the nut (2) to 0.113 m.daN
(9.99 lbf.in).
(8)
Apply SEALANTS (Material No. 09-007) to the nuts (4) and the ends of the bolts (8) and (9).
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
Post SB 28-1077 For A/C 001-001,051-052,
Subtask 28-11-41-420-058-A
B. Installation of the Water Drain Valve
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.
(1)
Install the O-ring (3) on the elbow (1).
(2)
Install the elbow (1) in the water drain valve (5) and tighten the nut (2) by hand.
NOTE : You must bond the bolt (8) (Ref. TASK 28-11-41-991-002)
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