SECTION IV – REPAIR 7-更换钢丝螺套、螺柱、衬套、销钉和螺母板-B.Method No.407B：更换松动或损坏的螺纹钢丝螺套（铝或镁零件）

7.Replacing Inserts, Studs, Bushings, Pins and Nutplates

更换钢丝螺套、螺柱、衬套、销钉和螺母板

B.Method No. 407B: Loose or Damaged Thread Inserts (Aluminum or Magnesium Parts) Replacement

Method No.407B：更换松动或损坏的螺纹钢丝螺套（铝或镁零件）

Replace loose or damaged thread inserts in aluminum or magnesium-alloy parts as follows:

在铝或镁合金零件中，松动或损坏的螺纹钢丝螺套的更换方法如下：

(1) Remove loose or damaged inserts. Use long nosed pliers.

拆下松动或损坏的钢丝螺套。使用长柄钳。

WARNING: SOLVENT VAPORS ARE TOXIC AND FLAMMABLE. DO NOT INHALE VAPORS. OBSERVE FIRE PRECAUTIONS.

警告：溶剂蒸气有毒且易燃。请勿吸入蒸气。注意防火措施。

(2) Clean hole from which insert was removed. Use degreasing solvent C04-0025. Remove corrosion if present.

清理要取出钢丝螺套的孔，使用脱脂溶剂C04-0025，如有腐蚀需清除。

(3) Apply a thin, even coat of primer C03-0007 to threaded area in which new insert is to be installed.

在需安装新钢丝螺套的螺纹区域均匀涂抹一层薄薄的底漆C03-0007。

NOTE: Refer to applicable manual to verify type of primer required.

注：请参阅适用手册以验证所需底漆类型。

(4) Install new insert, while primer is wet, three-quarters to one and one-half turns below surface of countersink.

在底漆未干时安装新钢丝螺套，将其置于沉头孔表面下方四分之三至一个半圈处。

NOTE: Use a modified screwdriver, or a rod, with the correct outside diameter to fit inside diameter of insert and slotted to fit over tang of insert, to install new insert.

注意：安装新钢丝螺套时，需使用经过改装的螺丝刀或专用杆，确保其外径与钢丝螺套内径匹配，并通过槽口套入钢丝螺套的卡舌。

(5) Remove tang. If applicable, use long-nosed pliers or blunt tool and hammer.

移除卡舌。若适用，使用长柄钳或钝器配合锤子。

(6) Touch up lead thread on component. Wipe with a thin coat of primer C03-0007 to seal surface scratches and adjacent area around the insert hole.

修补组件上的螺纹。用薄层底漆C03-0007擦拭以密封表面划痕及钢丝螺套孔周边区域。

(7) Let primer to cure for four to six hours at room temperature or bake for one hour at 180 to 275°F (82 to 135°C).

将底漆置于室温下固化4至6小时，或在180至275华氏度（82至135摄氏度）下烘烤1小时。