1、THIS REPAIRAPPLIES TO(适用于……)THE OUTBOARD FLANGE OF THE KEEL BEAMLOWER CHORD BETWEEN STATIONS 500D AND 520.
本修理适用于站位500D至520之间龙骨梁下弦条外侧凸缘的修理。
2.Cut away(切除)the inboardend of the initial shear tie(剪切带). See DetailI, Section A-A and Detail II, Section B-B.
切除原剪切带内侧末端。参阅细图 I,截面图 A-A和细图II,截面图B-B。
3.Make surethere are no cracks. Do a high frequency eddycurrent (HFEC) inspection (高频涡流探伤)along thecut edges of the keel beam and the shear tie. Refer to SRM 51-10-02 and NDT,part 6, 51-00-00.
确保没有裂纹。沿龙骨梁和剪切带的切口边缘做高频涡流探伤(HFEC)检查。参阅SRM 51-10-02和NDT, part 6, 51-00-00。
4.Use a steelshim to prevent damage to the skin. If the skin is damaged, referto SRM 53-00-01 for a repair.
使用一块钢垫片以防止损伤蒙皮。如果损伤蒙皮,参阅SRM 53-00-01进行修理。
5.Remove and discard the initialsplice angle and clip.
卸下并 废原搭接角形件和夹件。
6.Apply achemical conversion coating to the repair parts and to the bare surfaces of thekeel beam. Refer to SRM 51-20-01.
在修理件和龙骨梁的裸露表面涂化学转换涂层。参阅SRM 51-20-01。
9.IT IS PERMITTED TO EXTEND THE DIMENSIONS OF REPAIR PARTS TOFIT THE AREA OF DAMAGE.
允许扩展修理件的尺寸来配合损伤区域。
10.ALLDIMENSIONS ARE IN INCHES, UNLESS GIVEN DIFFERENTLY.
所有的尺寸都以英寸作为单位,除非另外有标示。
11.USE SHIMS AS NECESSARY(按需要)TO KEEP THE GAPS 0.010 INCH OR LESS (或更少)BEFORE YOU INSTALL THE FASTENERS.
在你安装紧固件之前,按需要使用垫片,以保持间隙不大于0.010英寸。
12.THERE MUSTBE A MINIMUM OF (最少)THREEFASTENERS THROUGH THE PART 7 FILLER. ADJUST THE LENGTH OF PART 7 AS NECESSARY.
最好要有三个紧固件在部件7填片上。按需要调整部件7的长度。
13.THE DISTANCE OF THE DAMAGE FROM(损伤离……的距离)AN EXISTING HOLE(现存的孔)OR FASTENER MUST NOT BE LESS THAN20X.
损伤到现存孔或紧固件的距离不能少于20X。
14.DENTS MUSTBE SMOOTH AND FREE FROM(没有……的,免除……的)SHARPCREASES, GOUGES, OR CRACKS AND SHOWING NOEVIDENCE OF(表明没有……的迹象)PULLED ORLOOSE FASTENERS.
凹坑必须平滑过渡,并且没有尖锐的皱折、凿伤或裂纹,没有紧固件被拉出或松动的迹象。
15.REFER TO51-70-11, 51-70-12, AND 51-70-13 FOR TYPICAL(典型的) FORMED SECTION(钣弯件)REPAIRS, TYPICAL EXTRUDED SECTION(形材)REPAIRS, AND TYPICAL WEB(腹板) REPAIRS.
16. THESE TYPICAL REPAIRS MAY BE USED WHEREVER APPLICABLE, PROVIDED THAT(假如,倘若)ADEQUATE SPACE IS AVAILABLE FORINSTALLATION OF THE REPAIR PARTS, WITH NO INTERFERENCE(干扰,干涉)FROMADJACENT STRUCTURE.
如果安装修理件时有足够的空间,不会与附近的结构相互干扰,这些典型修理便可以用在任何适用的地方。
17. SOME OF THE TYPICAL REPAIRS MUST NOT BE USED IN CERTAINAREAS OF THE AIRPLANE, AS NOTED IN THE TYPICAL REPAIR FIGURES.
按典型修理图表里的注释所示,一些典型修理不能用在飞机上的某些区域。
18. REFER TO THE USAGELIMITATIONS(使用限制)IN THETYPICAL REPAIR FIGURES BEFORE BEGINNING A REPAIR.
在开始一项修理之前,参阅典型修理图表里的使用限制。
19.BEND THE REPAIR ANGLES INTHE ANNEALED(退火) CONDITION, THEN HEAT TREAT(热处理)AS SPECIFIED(按指定的需要).
在退火状态弯曲修理角形件,然后按指定需要热处理。
20.THERE MUST BE A MINIMUM OF FOUR REPAIR FASTENERS THROUGH THE HORIZONTAL(水平的)FLANGE OF THE PART 3 ANGLE (THIS DOES NOTINCLUDE(不包括)A FLOOR PANELFASTENER).
在部件3角形件的水平凸缘上必须最少有四个修理紧固件(这个不包括一个地板紧固件)。
21.THE REPAIR PARTS MUST NOT (不能)CAUSE(造成,形成) A BLOCKAGE(障碍) OF ANY FLOOR BEAM(地板)HOLES.
修理件不能对任何地板梁孔形成干扰。
22.MAKE THE CUTOUTS(切割线)IN THE REPAIR PARTS THE SAME SHAPE AS THE HOLES. THEY MUST ALIGNWITHIN(在……范围内对齐)THE FLOOR BEAM.
在修理件上画出与孔形相同的外形切割线。它们必须对齐地板梁。
23.INSTALL A BACN10JR3CFD NUTPLATE(托板螺帽)WITH(用……)TWO BACRA5BA3D5 RIVETS(铆钉)OR TWO BACR15DR3 BLIND RIVETS(拉铆钉)AND THE SAME TYPE AND SIZE OF FLOORPANEL OR CARGO LINER(形成货舱范围的板,包括侧板和地板等)FASTENER AS(the same as 与……相同)THE ONE THATWAS REMOVED.
用两个BACRA5BA3D5铆钉或两个BACR15DR3拉铆钉安装托板螺帽,托板螺帽的规格要与从原来货舱上拆下来的相同。
24.INITIAL FASTENER LOCATION(原紧固件位置). INSTALL A FASTENER AS GIVEN(按……给出的)IN TABLE I. USE THE DIAMETER NECESSARY TO KEEP TRANSITION FIT(过渡配合)HOLES.
原紧固件位置。按表格I给出的数据安装紧固件。使用必要的直径来保持过渡配合孔。
25.REPAIR FASTENERLOCATION(修理紧固件位置). INSTALL A BACB30NW6K()(PREFERRED) OR A BACB30FN6 (ALTERNATIVE) HEX DRIVE BOLT WITH A BACC30M COLLAR.
修理紧固件位置。安装BACB30NW6K()(首选)或BACB30FN6(可选)Hi-Lock, 使用BACC30M螺帽。
26.Ifcrack terminates at (在……停止)orgoes through a fastener hole, oversize the hole to 0.25 inch (or 0.32 inch) andinstall a filler in the hole.
如果裂纹止于或通过紧固件孔,扩孔至0.25英寸(或0.32英寸),并安装填充物在孔中。
27. Fabricatethe filler from shank of 1/4 (or 5/16) inch 2017-T3 aluminum alloy rivet.Install filler with BMS 5-95 sealant.
用1/4 (or 5/16) 英寸的 2017-T3铝合金铆钉杆制作填充物。用BMS 5-95密封胶湿安装。
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