EXTRUDED SEALANT
PUSH THE METAL SEAL COVER INTO POSITION
NOTE: THE____
NOZZLE SIZE
DEPENDS ON THE
SIZE OF THE
METAL METAL SEAL COVER
SEAL
COVER
SEALING GUN
FILL THE METAL SEAL COVER
Metal Seal Cover Installation
Figure 812
C76341
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(d)
Put BMS 5-26 Type II Class B sealant into one end of the channel and fill until sealant comes out of all other openings (Fig. 814).
(e)
Fill all slots, joggles and channels where continuity of a seal or a block-off seal is necessary.
CAUTION: MAKE SURE THERE IS SUFFICIENT SEALANT IN THE SEALING GUN
_______ FOR A COMPLETE SEAL. IF YOU STOP AND START WHEN YOU APPLY THE SEAL, AIR BUBBLES CAN GET INTO THE SEAL AND IT WILL NOT BOND CORRECTLY.
(f)
Slowly and continuously move the sealant into the area that you apply a fillet seal.
(g)
Remove unwanted sealant with the sealant fairing tool.
(h)
Make the ends of the seal smooth.
(i)
Examine the seal for a bad bond or air bubbles.
1) If the seal has a bad bond or air bubbles, do the procedure again.
METAL
Installed Metal Seal Cover
Figure 813
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(j) 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 368-068
(9)
Apply a prepack seal.
(a)
Apply a layer of BMS 5-26 Type II Class B sealant to one of the parts (Fig. 815).
(b)
Use a sealant fairing tool to move the sealant such that it is in the shape of the cavity.
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