(2)
The second task is to not use a heat source to repair rub pads made of bonded phenolic or stainless steel.
(3)
The third task is to do a temporary repair of rub pads made of bonded phenolic or stainless steel.
(4)
The fourth task is to do a repair of rub pads made of bonded teflon.
TASK 51-51-00-308-001
2. Bonded Phenolic or Stainless Steel Rub Pad Repair (Heat Source Available)
_________________________________________________
A. Standard Tools and Equipment
(1)
Semco Sealing Gun
(2)
Heat Lamps - 250 Watts
(3)
Thermocouples
B. Consumable Materials
(1)
G00000 Wedge, Hardwood
(2)
G00000 Wedge, Plastic
(3)
A00250 Adhesive - BMS 5-26, Class B-1/2
(4)
A00251 Adhesive - BMS 5-26, Class B-2
(5)
B00184 Solvent - BMS 11-7
(6)
B00148 Solvent - Methyl Ethyl Ketone (MEK),
TT-M-261
(7)
B00316 Solvent - Aliphatic Naphtha - TT-N-95
(8)
B00153 Solvent - Toluene (Toluol), TT-T-548
(9)
A00322 Paper - Abrasive, Aluminum Oxide, 100
Grit (minimum)
(10)
G00000 Cloth - Abrasive, Aluminum Oxide, 100 Grit (minimum)
(11)
G00034 Cheesecloth - Clean
(12)
B00000 Pads - Scotch-brite, Aluminum Oxide Impregnated, Type A
(13)
G00000 Spatula
(14)
G00000 Gloves - Rubber or Cotton
C. Prepare the Mating Surfaces
NOTE: Make sure you put on clean cotton or rubber gloves when you clean
____
the mating surfaces.
S 118-002
(1) To clean the phenolic rub pads, do these steps:
(a) Remove all loose dirt, grease or oil from the surface with a clean cheesecloth.
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51-51-00
ALL ú ú 01 Page 801 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
WARNING: DO NOT GET SOLVENTS IN YOUR MOUTH, OR YOUR EYES, OR ON
_______ YOUR SKIN. DO NOT BREATHE THE FUMES FROM SOLVENTS. SOLVENTS ARE HAZARDOUS MATERIALS. SOLVENTS MAY BE FLAMMABLE OR HARMFUL TO THE ENVIRONMENT. REFER TO PRODUCT MATERIAL SAFETY DATA SHEETS (MSDS) AND LOCAL REQUIREMENTS FOR PROPER HANDLING PROCEDURES.
(b)
Clean the surface with a cheesecloth that is moist with solvent, Series 95 (AMM 20-30-95/201).
(c)
Immediately dry the surface with a clean dry cheesecloth.
(d)
Lightly rub the phenolic pad with abrasive paper until the shiny surface is removed. Make sure the shiny surface is removed from all edges and corners of the pad.
(e)
Remove all of the remaining particles with a clean cheesecloth.
NOTE: Do not use solvent to remove the remaining particles.
____
(f)
Clean the surface with a clean cheesecloth that is moist with solvent, Series 98-1 (SOPM 20-30-98) until all the remaining particles are removed.
(g)
Clean the surface again, if it is necessary.
S 118-003
(2) To clean rub pads made of stainless steel that do not have primer applied, do these steps:
(a)
Remove all loose dirt, grease, or oil from the surface with a clean cheesecloth.
(b)
Clean the surface with a clean cheesecloth that is moist with solvent, Series 88 (AMM 20-30-88/201).
(c)
Immediately dry the surface with a clean, dry cheesecloth.
(d)
Clean the surface again, if it is necessary.
S 118-004
(3) To clean the clad aluminum surfaces that do not have primer applied, do these steps:
(a)
Remove all loose dirt, grease, or oil from the surface with a clean cheesecloth.
(b)
Clean the surface with a clean cheesecloth that is moist with solvent, Series 88 (AMM 20-30-88/201).
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