1.This sectiongives general information about Boeing approved
(波音许可的)fasteners used(用于)on thisairplane. It also gives information about Inspecting for loosefasteners.本节介绍用于本飞机上的由波音许可的紧固件概要信息。也包括有关紧固件松动检查的信息。
2.Boeing approved fasteners andfastener/mating part combinationshave specific(特指的) fastener codes.波音许可的紧固件和紧固件/相配件组合有指定的紧固件代码。
3.Fastener codes(紧固件代码)are not usedin this manual, but are used on theBoeing engineer drawings. Fastener codes are cross referenced(相互参考的)to thefastener part numbers(件号)on the drawingsand in Boeing Design Detail Standard BACD2074.
本手册上不使用紧固件代码,但在波音工程图纸上使用紧固件代码。在图纸和《波音设计细节标准BACD2074》上,紧固件代码和紧固件件号是相互对照的。
4.Brownstreaks(拖尾条纹)on the exteriorfuselage surface(机身外表面)can becaused by(由……引起)a corrosioninhibiting compound that moves along the fastener shank. These streaks are notusually caused by loose fasteners.
在机身外表面上的褐黑色拖尾条纹可以是由于腐蚀抑制物沿紧固件杆流出引起。这些条纹不都是由于紧固件松动引起。
5.Refer to(参阅)SRM 51-10-05if you find loose or missing(丢失的) fasteners. Loose fasteners can be identified by(以……识别)thefollowing situations:
如果你查找松动或丢失的紧固件,参考SRM 51-10-05。松动的紧固件可以由以下情况辨别:
6.The fastenermoves in relation to(相对于……)the materialthat it holds.
7.Tippedfastener heads can show looseness(“松动”的名词形式) or slippage(滑动) of thematerial. The edges of a rivet head that are rolled upward also show looseness.
紧固件头一侧翘起表明有松动或滑出材料。铆钉头边缘滑起同样表明有松动。
8.A black ordark gray colored stain adjacent to(在……附近)or around the fastener head can showa loose rivet. A streak of dirt or oil aft of(在……之后) a looserivet is usually apparent.
9.Fastenerscan be loose if the paint around the fastener head is cracked.
如果紧固件头周围的漆层碎裂,紧固件有可能松动。
10.This section gives some general dataabout the usual types ofmechanical fasteners found on(在……上找到的) thisairplane.
11.Permanent(永久的) fastenersare used in the assembly(组装,装配) ofstructure that is not disassembled(拆卸) during usual service(勤务).
永久性紧固件用在一般勤务中不用拆下的结构装配上。
12.Most permanent fasteners becomeunserviceable(不可用) after theyare removed(拆下) and must bediscarded( 废).
13.Removable(可拆卸的) fastenersare used in the assembly of structure that can or must be disassembled(可以或必须被拆下的)during usualservice.
14.Most of thefasteners used on this airplane are solid-shank rivets
(实心铆钉)made from(由……制造)specified(特定的) aluminum alloys(铝合金). 本飞机上所使用的多数紧固件是实心铆钉,由特定的铝合金制造。
15.Solid rivetsare permanent fasteners that are used where rivets must have sufficient(足够的) shear(剪切) strength(强度)and where complete hole-filling is important.
实心铆钉是永久性紧固件,用在需要足够抗剪强度和紧固件孔需要被完全填满的地方。
16.Refer to SRM 51-40-03 for data aboutapproved fastener substitutions(替换)and to seeif(是否)there are(有)limitations(限制)on their use(在它们的使用上).
参阅SRM 51-40-03有关许可紧固件的替换数据,并且看看是否存在使用限制。
17.Lockbolts are permanent fastenersthat have a collar(螺帽) that isswaged onto the serrated end of the bolt.
锁螺栓是永久性紧固件,它有一个螺帽套在螺栓末端的槽上。
18.Lockbolts have a higher shear strengthand a higher clamp-up force than solid rivets.
锁螺栓比实心铆钉有更高的抗剪强度和夹紧力。
19.Hex-drive bolts are almost the sameas lockbolts but use a threaded shank together with(与……在一起)a threadedcollar or nut.
六角螺栓几乎与锁螺栓相同,但它使用螺杆与带螺纹的螺套或螺帽连接。
20.You can use hex-drive bolts asalternative(作为……的替换)fasteners tolockbolts if you do not have access to(可以使用) the lockbolt installation tools(安装工具). Refer toSRM 51-40-03 for approved alternatives(许可的替换).
如果你不能使用锁螺栓的安装工具,可以使用六角螺栓代替锁螺栓。参阅 SRM51-40-30 允许的替换。
21.Donot use blind fasteners at these locations. Blind fasteners can fail(失效) ifyou use them in these locations。
在这些位置不要使用拉紧固件。如果你在这些地方使用它们,拉紧固件会失效。
22.Blind fasteners are fasteners thatyou can install when you have access to only one side of the structure(只能接近到结构的一边).
23.Blind bolts(拉螺栓) have larger(更大的)manufactured(人造的,加工的)heads andhigher tension(抗拉)and shear(抗剪)strengthsthan the usual blind rivets.(一般拉铆钉)
24.Blind fasteners are permanent onlywhen they replace the initial(原来的)blindfasteners specified(被指定的)in thedrawing for the component(部件)or ifspecified as permanent(作为永久的)in an FAAapproved(FAA许可的)repair.
25.Make sure that the material edgemargin(边距)and fastenerspacing (紧固件间距)are sufficient(足够的)when you useblind fasteners as alternative fasteners(作为代用紧固件).Refer to SRM 51-40-03 for approvedalternatives(许可替换).
26.Refer to SRM 51-40-05 for hole sizedimensions(尺寸)and holequality specifications(孔的质量规范).
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