757 AMM 飞机维护手册燃油 CHAPTER 28 - FUEL 1(127)_航空信息_民用航空_通用航空

曝光台注意防骗网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者

____ is necessary. If the first fillet seal is fully cured but is not clean, then it must be cleaned before you apply the second fillet seal. Do not use different sealants for the first fillet and the second fillet.
1) If you use an extruded nozzle, do the steps that follow: a) Cut the nozzle to make a fit of the dimensions shown in Fig. 808.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

28-11-00
ALL ú ú 01 Page 820 ú Sep 28/01

757 MAINTENANCE MANUAL
b) Push the nozzle head against the surfaces such that the fillet seal you apply is thickest in the middle of the surfaces.
NOTE: Keep the nozzle of the sealing gun near the
____ surface to prevent air bubbles.
2) If you do not use an extruded nozzle, use a sealant fairing tool to make a full bodied fillet seal.
3) Remove all air bubbles and re-entrant fillet seal edges.
(g) 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.
CLASS A-2

Apply the Precoat
Figure 805

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

28-11-00
ALL ú ú 01 Page 821 ú Sep 20/96

C76314
A

757
MAINTENANCE MANUAL

SEALING GUN

Apply a Fillet Seal
Figure 806

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

28-11-00
ALL ú ú 01 Page 822 ú Mar 20/94

757
MAINTENANCE MANUAL

Push the First Fillet Seal into the Seam
Figure 807

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú