
1. If a dent(凹痕)is largerthan(比……大)the allowabledamage limits (允许损伤容限)for thecomponent contained(被包括在……)in the applicablechapter(适用的章节)of thismanual:- do not usethis section ((手册的)节)- repair thedent as given (按……给出的)in the applicablerepair chapter((手册的)章).2. This subject contains repairs to dents(包含对凹痕的修理)in sheetmetal(钣金)materials inthe external aerodynamic surfac(外部气动力表面)of the airplane.本细目包含对飞机外气动表面钣金材料上凹痕的修理。
3. Dents in 7178 aluminum alloys(铝合金)or titanium(钛)must not bereworked(不能再加工).4. Dents in these areas must not be put back to their initialcontour:(原外形)- Structurethat is bonded(搭接的)and hasdelaminated(分层)- Areaswhere the skin attaches to a frame(蒙皮连接着隔框), a stringer(桁条), anintercostal(加强肋)or a doubler(加强件)- Across afastener hole.跨越紧固件孔。
Refer to theapplicable repair section in this manual to repair that area.参阅本手册中适用的章节,修理该区域。
5. Dents in 2000 series and 7000 series (except 7178) aluminumalloys 0.063 gage or less may be reworked.2000系列和7000系列(7178除外)不大于0.063的铝合金可以再加工。
6. Afterrework, use a suitable nondestructive test(无损探伤)procedure per the 737 NondestructiveTest Manual,(《无损探伤手册》) D6-37239,to ensure that the material is free from(没有...的, 免除...的)cracks.再加工之后,参阅《737无损探伤手册》D6-37239进行适合的无损探伤,确保材料没有裂纹。
7. Before using this section, make sure to find out that nospecific repairs are available in thechapter applicable to the component.在使用本节之前,确保在本章中没有适用于本部件的特定修理。
8. THISREPAIR IS NOT APPLICABLE TO (不适用于)THE FOLLOWING FATIGUE(疲劳)CRITICAL(关键的,临界的)STRUCTURES.本修理不适用于以下疲劳关键结构。
9. FUSELAGECROWN STRINGERS(桁条)ANDLONGERONS(纵梁)BETWEEN STA(机身站位)1016 AND1156 ABOVE AND BELOW STABILIZER(安定面) CUTOUT INTHE FUSELAGE.在机身站位1016和1156之间,机身内安定面切口以上和以下的机身供顶桁条和纵梁。
10. Ifdamage portion lies against(靠着)othermaterial it may be necessary to(有必要)remove additional fasteners inorder to(以达到……目的)obtainclearance so as not to(以便不会)damage(注:这里的“损伤”是动词) theattached(附着的,连接着的) part.如果损伤部分紧靠着其它材料,则有可能需要拆除另外的紧固件,以获得足够空间而不会损伤周围的连接件。
11. Make therepair parts from materials specified(被指定的)in Table I.按表格 I 中指定的材料制作修理件。
12. Break sharpedges(锐边)of originalparts(原件)and repairparts(修理件)0.015R to0.030R.修整原件和修理件的锐边0.015R到0.030R圆角。
13. Removeall nicks, scratches, burrs, sharp edges and corners from original parts andrepair parts.去除原件和修理件上的所有划痕、擦伤、毛刺、锐边和锐角。
14. Apply(涂)an alodine(阿罗丁)coating(涂层)to therepair parts and the cut edges of the original parts per 51-20-01.参照 51-20-01在修理件和原件的切口边缘上涂阿罗丁。
15. Installrepair parts making a faying surface(接合面)seal(密封)with(用……) BMS 5-95 sealant(密封胶)according to(根据)51-20-05. Installfasteners wet(湿安装紧固件)with BMS5-95 sealant.安装紧固件,根据 51-20-05 接合面用 BMS 5-95 密封胶封胶,用BMS5-95 密封胶湿安装紧固件。
16. Restore(恢复)original finish(表面涂层)per SRM51-21 of the Airplane Maintenance Manual.根据《飞机维修手册》(AMM)SRM 51-21 恢复原表面涂层。
17.A PREFERRED(首选的,推荐的) REPAIR FORIMPROVED FATIGUE LIFE (疲劳寿命)IS TO BOND MATING SURFACES OF REPAIRPARTS AND ORIGINAL STRUCTURE PER 51-70-09 PRIOR TO (在……之前)INSTALLATIonOF FASTENERS一种能提高疲劳寿命的首选修理是,在安装紧固件之前,根据 51-70-09 搭接修理件和原结构的接合面。
18.REFER TO THE FOLLOWING WHEN USINGTHIS REPAIR:使用本修理时参阅以下章节:- 51-20-01FOR PROTECTIVE TREATMENT OF metaL金属的保护处理- 51-40 FORFASTENER CODE, REMOVAL, INSTALLATION, HOLE SIZES AND EDGE MARGINS紧固件代码、拆卸、安装、孔尺寸和边距- 51-21 OF THE AIRPLANE MAINTENANCEMANUAL FOR INTERIOR AND EXTERIOR FINISHESAMM 51-21 内部与外部涂层- 51-10-02FOR INVESTIGATION AND CLEANUP OF DAMAGE.损伤检查与清除19.ALL FASTENERS IN REPAIR TO BE OFSAME NOMINAL DIAMETER, WHICH IS TO BE DETERMINED BY(由……决定)AVAILABLE EDGEMARGINS(边距)AND SKINTHICKNESS (蒙皮厚度)AVAILABLEFOR COUNTERSINKING.所有在修理中的紧固件均为相同的标称直径,由可用边距和为划窝的蒙皮厚度决定。
20. EDGEMARGINS MUST NOT BE LESS THAN(少于)2D. RECOMMENDED(被推荐的) FASTENERSPACING(紧固件间距)4D. (D =DIAMETER OF FASTENER).边距不能少于2D,推荐紧固件间距为4D。
(D=紧固件直径)21. INSTALL INSUCH A SEQUENCE(以这样一种顺序), ORCOMBINATION(相互配合的方式) OF SUITABLEFASTENERS AND NUTS, THAT WILL PREVENT INTERFERENCE OF (……的相互干扰)NUTS.按这样一种顺序或组合按装合适的紧固件和螺帽,那样可以螺帽的相互干扰。
22. DO NOTINSTALL THESE TENSION HEAD FASTENERS51-70-13page1WHEReSHEAR HEAD FASTENERS WERE INSTALLEDIFTENSION HEAD FASTENER INSTALLATION WOULDRESULTIN A KNIFE EDGE CONDITION23. Originalfastener location. Replace with same size fastener as original. If hold isdamaged use 1/64 oversize.原紧固件位置,用与原紧固件相同的直径的紧固件更换。
如果孔损坏,使用加大1/64的。
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