O-RING MACHINE SURFACE TO FIT O-RING

SEALANT PASSAGE SEALANT CHAMBER
TOOL BODY (CROSS SECTION) UPPER PISTON
LOWER PISTON

Temporary Repair Tool (F70230) for Self-Sealing Rivets
Figure 810

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-11-00
 ALL  ú ú 01 Page 829 ú Mar 20/94

C76338
A

757
MAINTENANCE MANUAL

 6)  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.
 (c) Repair fasteners with metal seal covers. 1) Use a sealant cutting tool to cut around and under the metal seal cover and to separate the sealant from the structure.
 2)  Hold the metal seal cover with pliers and pull away from the fastener.
 NOTE: This should remove most of the sealant.
____

LOCKBOLT
BOLT NOTE: ALL DIMENSIONS ARE IN INCHES.
Dimensions of Fillet Seals (Inches) for Fasteners Figure 811
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-11-00
 ALL  ú ú 01 Page 830 ú Mar 20/94

A

757
MAINTENANCE MANUAL

 3)  Cut and remove the remaining sealant.
 NOTE:____ You do not have to remove small quantities of
 sealant that bond tightly to the fastener.
 4)  Clean the metal seal covers, fastener ends, and structure
 area with cleaning solvent.
 5)  Apply precoat to the area with BMS 5-26 Type II Class A-2
 sealant.

 NOTE: Precoat is optional when you use Pro-Seal 860, B 1/6
____ sealant.
 a)  Apply the precoat smoothly and equally into all the crevices.
 6)  Fill a metal seal cover, of the correct size and shape, two-thirds full of BMS 5-26 Type II Class B or Pro-Seal 860, B 1/6 sealant with a sealing gun or a clean spatula (Fig. 812).
 7)  Make sure there is sufficient sealant to be extruded around the base and through the hole in the top of the metal seal cover.
 8)  Push the sealant in the metal seal cover to make sure there are no holes left.
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：757 AMM 飛機維護手冊 燃油 CHAPTER 28 - FUEL 1(131)