(3) Do these steps to seal the seat tracks (open track, no filler):
(a) Apply fillet sealant, A00247 to all waterseal edges where it cut back from the seat track.
(b) Put a strip of 3M 8663DL tape, G02500 or moisture barrier tape, G51340 (optional) down
on each side of the seat track with one edge overlapped onto the existing waterseal and
one edge on the sealant between the seat track and floor panel.
1) Extend the tape a minimum of 2 in. (51 mm) past the end of the seat track cutout.
2) Push the tape down firmly to smooth out the sealant bead.
3) Make sure the seam tape strips is continuous with no splices.
4) Apply fillet sealant, A00247 to the edge of the previous applied seam tape.
(c) Put a small strip of 3M 8663DL tape, G02500 or moisture barrier tape, G51340 (optional)
at the end of the seat track with one edge overlapped onto the existing waterseal and one
edge on the sealant between the seat track and floor panel.
1) Extend the seam tape to overlap onto previous applied seam tape a minimum of
1 in. (25 mm).
2) Push the tape down firmly to smooth out the sealant bead.
(4) Do these steps to seal seat tracks with no filler (open track): (Alternative methods)
(a) Method 1
1) Cut a patch of 3M 8663 tape, G02423 or 3M 8663DL tape, G02500 or moisture
barrier tape, G51340 (optional) to fit over the seat track and overlap onto the
existing waterseal tape a minimum of 1 in. (25 mm).
2) The edge of the patch at the end of the seat track must extend a minimum of 2 in.
(51 mm) past the end of the seat track cutout.
3) Apply fillet sealant, A00247 to all waterseal edges where it has been cut back from
the seat track.
4) Remove the backing from the adhesive side of the tape and push the tape down
firmly to smooth out the sealant bead.
5) Remove the backing from the nonadhesive side of the tape.
(b) Method 2
1) Install the 3M 8663 tape, G02423 or moisture barrier tape, G51340 (optional) to the
floor panel except the seat track.
2) Apply a bead of sealant, A00247 to the edge of the waterseal around the perimeter
of the seat track.
(c) Method 3
1) Put a strip of 3M 8663DL tape, G02500 or moisture barrier tape, G51340 (optional)
down each side of the seat track with one edge along the edge of the seat track
crown.
a) The edge of the patch at the end of the seat track must extend a minimum of
2 in. (51 mm) past the end of the seat track cutout.
b) Make sure the seam tape strips is continuous with no splices.
c) Apply a bead of sealant, A00247 to the perimeter of the seam tape except the
edge next to the seat track.
2) Install the 3M 8663 tape, G02423 or moisture barrier tape, G51340 (optional),
overlap the seam tape.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
53-21-00
Page 803
D633A101-ILF Feb 15/2018
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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