(b)
Remove the lower shroud.
S 024-011
(4) Remove the upper shroud seal.
NOTE: If a part of the seal is loose, missing or has a tear, you
____ can repair the damaged part. Carefully use a knife to remove the damaged part and replace with a new part of the same length.
S 164-012
(5) Clean the surfaces of the upper shroud:
(a)
Remove the remaining sealant and adhesive from the surfaces of the upper shroud with a scraper or an equivalent tool.
(b)
Clean the surfaces of the upper shroud with isopropyl alcohol and a cloth.
(c)
Use an air source or a cloth to dry the surfaces of the upper shroud.
TASK 49-12-51-404-006
3. Upper Shroud Seal Installation (Fig. 401)______________________________
A. Consumable Materials
(1)
A00552 Adhesive - BAC 5010, Type 60
(2)
A00803 Sealant - Fire Resistant, BMS 5-63
B. Access
(1)
Location Zones
101 Control Cabin, LH
205 Electronic Compartment
703 APU Compartment
(2)
Access Panels
1201 Electronic Equipment Access Door
3804 APU Cowl Door
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
SEE A
SEE B
A
UPPER SHROUD SEAL (3 LOCATIONS)
FWD
B
Upper Shroud Seal Installation Figure 401
G96351
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49-12-51
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES/MAINTENANCE MANUAL ////////////////////////
C. Procedure S 424-007
(1) Install the upper shroud seal:
(a)
Apply the adhesive to the faying surfaces of the seal.
(b)
Install the seal on the upper shroud.
(c)
Apply sufficient pressure to the seal to make sure the seal is installed correctly.
(d)
Make sure that the surfaces of the seal show no wrinkles, bubbles or inclusions.
(e)
Remove the unwanted adhesive from the upper shroud and seal with a cloth.
(f)
Use foam rubber pads, wood strips (ruler) and/or rubber-padded clamps to temporarily attach the seal to the upper shroud.
(g)
Let the adhesive dry under contact pressure for a minimum of 24 hours at 65°F-100°F (18°C-38°C).
NOTE: You can use a heat lamp to decrease the time for the
____ adhesive to dry. The time to dry with a heat lamp is four hours at 120°F (49°C).
(h)
Remove the temporary materials that attach the seal to the upper shroud.
(i)
Apply a sufficient amount of sealant in the space between the seal and the upper shroud and between each of the two adjacent seals.
(j)
Remove the unwanted sealant from the upper shroud and seal with a cloth.
(k)
Let the sealant dry for a minimum of 48 hours at 72°F.82°F (22°C- 28°C).
NOTE: You can use a heat lamp to decrease the time for the
____ sealant to dry. The time to dry with a heat lamp is four hours at 120°F (49°C).
S 414-008
CAUTION: KEEP A MINIMUM CLEARANCE OF 0.18 INCHES (5 MM) BETWEEN THE
_______ ENGINE, THE FIRE DETECTOR, THE CLAMPS, AND THE LOWER SHROUD.
BE CAREFUL WHEN YOU MOVE THE LOWER SHROUD. DAMAGE TO THE SHROUD DRAIN LINES CAN OCCUR.
(2) Install the lower shroud:
(a) Hold the lower shroud against the upper shroud.
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