75-31-01
ALL ú ú C01 Page 415 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
WARNING:_______ DO NOT GET METHYL ETHYL KETONE (MEK) IN YOUR MOUTH OR
EYES, OR ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM
MEK. PUT ON A PROTECTIVE SPLASH GOGGLE AND GLOVES
WHEN YOU USE MEK. KEEP MEK AWAY FROM SPARKS, FLAME
AND HEAT. MEK IS A POISONOUS AND FLAMMABLE SOLVENT
WHICH CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO
EQUIPMENT.
2) Use solvent to clean the mating surfaces of the extension
ring and the strut fairing assembly. Rub the surfaces dry.
3) Apply the parting agent to the mating surfaces of the
extension ring.
a) Let the parting agent cure until it is dry to the
touch.
ú 4) Apply the BMS5-63, Type 1 or 2, Class B-4 primer and
ú sealant, as follows:
a) Apply the BMS5-63 primer as a continuous coat to the
mating surfaces of the extension ring.
1_ Let the primer cure for a minimum of 30 minutes.
NOTE:____ The primer will form a chalky surface when
dry.
b) Apply the BMS5-63 sealant to the faying surface of the
strut fairing.
5) Install the strut fairing half. Use 0.025 inch x 0.375
inch (0.64 mm x 9.53 mm) spacers or washers at each
fastener location to keep the correct sealant thickness.
Do not fully install the fasteners.
ú 6) Let the BMS5-63, Type 1 sealant cure at room temperature
ú for 48 hours.
ú
ú NOTE:____ If you use the BMS5-63, Type 2 sealant, let the
ú sealant cure at room temperature for four hours.
ú
ú a) If a shorter cure time is necessary for the Type 1
ú sealant, cure the sealant at 120° |5° Farenheit (50° C)
ú for four hours.
7) After the sealant has cured, do a visual check to make sure
the sealant fully covers the faying surfaces.
8) Remove the spacers and fully torque the strut fairing
fasteners.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
75-31-01
ALL ú ú C01.1 Page 416 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
WARNING: DO NOT GET METHYL ETHYL KETONE (MEK) IN YOUR MOUTH OR
_______ EYES, OR ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM MEK. PUT ON A PROTECTIVE SPLASH GOGGLE AND GLOVES WHEN YOU USE MEK. KEEP MEK AWAY FROM SPARKS, FLAME AND HEAT. MEK IS A POISONOUS AND FLAMMABLE SOLVENT WHICH CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
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