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MAINTENANCE MANUAL
c) If there is not sufficient clearance with adjacent metal seal covers, structures, or fillet seal, you can remove 25 percent or less of the area of the metal seal cover.
d) Make sure the metal seal cover has the dimensions shown in Fig. 813. 12) If it is necessary, do this Task: Application of Corrosion Resistant Finish (Topcoat) (AMM 28-11-00/701).
NOTE: A layer of corrosion resistant finish is
____ necessary only to protect bare (anodized) metal. It is not necessary to apply a layer of corrosion resistant finish on sealant. Corrosion resistant finish can be applied on sealant, but it is not necessary. Usually topcoat is applied to sealant only when it must be applied to protect adjacent bare metal.
S 368-076
(8) Apply an injection seal.
NOTE: You could raise the seal plane to isolate the faulty seal
____ from the fuel as an alternative to a new injection seal.
(a)
Make sure you have these tools: pipe cleaners, a sealant fairing tool, and a sealing gun with an injection nozzle attached.
(b)
Make sure the channel is thoroughly clean.
(c)
Apply a precoat of BMS 5-26 Type II Class A-2 sealant to the channel surfaces with pipe cleaners or a long, bristled pencil brush.
NOTE: If the channel cross-section is 0.07-inch or less, it is
____
not necessary to apply precoat.
1) Make sure you do not seal the channel with the precoat of BMS 5-26 Type II Class A-2 sealant. a) If you seal the channel, it will prevent the flow of
the sealant into the channel.
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28-11-00
ALL ú ú 01 Page 832 ú Jun 20/96
A
757
MAINTENANCE MANUAL
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