(2)
A00247 - Sealant - BMS 5-95 Class B
(3)
B00148 - Solvent - Methyl Ethyl Ketone (MEK), TT-M-261
(4)
A00000 - Compound - BAC5530 Type I
B. References
(1) AMM 51-31-00/201, Seals and Sealing
C. Access
(1) Location Zones
830 Left Side Doors
840 Right Side Doors
D. Procedure
S 114-004-B00
WARNING: DO NOT GET METHYL ETHYL KETONE (MEK) IN YOUR MOUNT 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 INJURY OR DAMAGE.
(1)
Clean all faying surfaces with a solvent wipe.
S 844-005-B00
(2)
Apply alodine and one coat BMS 10-11 type I primer to all bare aluminum surfaces including the faying surface of the fuselage skin.
S 824-006-B00
(3)
Apply a coat of strippable parting agent to all faying surfaces of the threshold, the scuff plates and the fuselage skin. (AMM 51-31-00/201)
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A 737-300/400/500MAINTENANCE MANUAL
(4) S 824-007-B00Apply the BMS 3-23 type 2 corrosion inhibiting compound to the entire area under the threshold.
NOTE:____ The area in contact with the scuff plate should be masked to prevent exposure to the corrosion-inhibiting compounds so the sealant will adhere.
(5) S 394-008-B00Prepack sealant BMS 5-95 to the cap, doorsill mating surface and the skin mating surface as shown on fig. 401 and install scuff plates with fasteners according to the production drawings.
NOTE:____ It is critical that sufficient sealant be prepacked into the scuff plates to completely fill the gap between the scuff plates and the fuselage skin along the lower edge of the doorway as shown on the sketch. Continuous sealant squeezeout is required along all gaps.
(6) S 394-009-B00Remove excess sealant from the gap and the edge after squeezeout has stopped.
(7) S 394-010-B00Apply fairing compound as a ramp at a 10 to 1 ratio to fair in the upper corners of the scuff plates to the doorway frame in order to provide a smooth transition for the door seal.
NOTE:____ No voids, ripples or bumps are allowed in the compound. Final surface finish of the ramp should be visually equivalent to 125 AA microinches finish.
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A
737-300/400/500MAINTENANCE MANUAL
WHEEL WELL - DESCRIPTION AND OPERATION
______________________________________
1. General_______
A. The main landing gear wheel wells are on either side of the keel beam and between the fuselage frames at body stations 664 and 727. The upper surface of the wheel wells is formed by a solid web. The web attaches to the lower flanges of the floor beams. The web and the lower lobe of the frame at station 727 are pressure walls. Screens are installed in the main wheel well for protection of equipment against tire burst.
B. The nose landing gear wheel well is in the lower forward fuselage between body station 227.8 and 294.5. The well is a rigid box structure consisting of a ceiling, two sidewalls, and a forward and aft wall. The webs of the frames at body stations 227.8 and 294.5 form the forward and aft walls. The sidewall webs are attached to frame structure. The entire box is a pressure wall.
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