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1、The Wiring Diagram Manual,The WDM consists of the following:ASM-Aircraft Schematic Manual AWM-Aircraft Wiring ManualAWL-Aircraft Wiring List,Aircraft Schematic Manual,The ASM contains the following:1.Introduction 2.Standard Practices 3.Alphabetical Index 4.Numerical Index 5.Schematic Diagrams:-Simpl
2、ified Schematics:Have schematic symbols but do not show sufficient detail to permit fault isolation.-Schematics:Show all line replaceable items,all A/C wiring,within a sub-sub system and give sufficient depth for A/C fault isolation.Note:Applicable to the particular customer or group of customers.,A
3、ircraft Wiring Manual,The AWM contains the following:1.Introduction 2.Standard Practices 3.Alphabetical Index 4.Numerical Index 5.Wiring Diagrams:Show all components and wires.Note:Applicable to the particular customer or group of customers,Aircraft Wiring List,The AWL contains the following:1.Intro
4、duction 2.Standard Practices 3.Equipment List 4.Hook-up List 5.Master Wire List 6.Engine Data Note:Applicable to the particular customer or group of customers.,Electrical Standard Practices Manual,The ESPM gives descriptive data and procedures for the electrical installations on all aircraft of the
5、AIRBUS family.The standard practices information in this manual tells you how to do maintenance and repairs on the standard electrical items.,The ESPM is broken down into the following:20-00-00 Introduction and how to use.You will also find an example here,which walks you through the process20-10-00
6、 Relates to safety issues.Here also you have ability to print yourself a safety tag.20-25-00 Relates to tools used.,Electrical Standard Practices Manual,20-30-00 Relates to the rules of specific areas on aircraft and requirements e.g.fuel tanks gear,pressurized,non-pressurized areas.Identification a
7、nd markings of wiring and components.Routing of wiring for safety,redundancy and reduction of EMF induction are described here.These areas are further divided into 6 designations;“G”for power generation of AC and DC.“P”for power distribution of greater than 15 amp circuits.“M”for miscellaneous non-s
8、ensitive circuits less than 15 amps.“S”for sensitive circuits such as FLT CTRL.“R”for radio audio and antennas.“T”for coax,Electrical Standard Practices Manual,20-40-00 Relates to Standard electrical items and connecting parts.20-50-00 Related to maintenance procedures.,Electrical Standard Practices
9、 Manual,00-INTRO-General,How to use 20-00-00-Indexes 20-10-00-Safety Practices 20-25-XX-Tools 20-3X-XX-Chapters related to standard rules and recommendations:20-31-XX Specific areas20-32-XX Identification/marking20-33-XX R Wire harnesses,Electrical Standard Practices Manual,20-4X-XX-Chapters related
10、 to standard electrical items and connecting parts with their description(P/N identification and characteristics)and their related processes(connection procedure or connection table):20-42-XX Sleeves,End Caps and Ferrules20-43-XX Splices and Pressure Seals20-44-XX Connectors and Terminal Blocks20-45
11、-XX Miscellaneous Electrical Items20-46-XX Circuit breaker,Relay and Relay Base20-48-XX Terminals and Contacts,Electrical Standard Practices Manual,20-5X-XX-Chapters related to maintenance processes:20-51-XX Standard Processes20-52-XX Inspection/Check and Test20-53-XX Repair Processes20-54-XX Protec
12、tion during Maintenance Checks20-55-XX CleaningNOTE:The power plant related Electrical Standard Practices data is published in the AMM 70-71-XX.,Electrical Standard Practices Manual,It is only with a P/N(not with a FIN)that it is possible to access to the ESPM information.The P/Ns listed in the ESPM
13、 are made up of two parts:-A basic element which is the standard number/family.-A suffix which defines the item.e.g.basic element(standard)+suffix(item)=Full P/N NSA936504 TC0607 NSA936504TC0607 ASNE0261 CF24 E0261CF24,Part Number(P/N)Construction,NOTE:For ASN standards,the 3 letters A,S,N are omitt
14、ed in the P/N.For clarity,only the suffix(item)(e.g.TC0607)is shown in the tables.The full P/N is however identifiable since the applicable standardnumber is always mentioned on the page(in the title or/and on topof the table).NOTE:For tool military part number(MIL),the P/N shall consist of the lett
15、er M and of the basic specification number.,Part Number(P/N)Construction,e.g M 81969/01-01-|-Dash number from specification sheet|-Specification sheet number|-General specification number|-M Military part number dicator,Part Number(P/N)Construction,SAFETY PRACTICES,For work on an electrical system,i
16、t is necessary:-to know and obey the standard safety practices,-to have a good knowledge of the electrical standard practices,-to have a good knowledge of requirements(processes,WARNINGS,CAUTIONS etc.)before you start the work.This is necessary to prevent injury to persons and/or damage to equipment
17、.,Specific areas on aircraft and requirements e.g.fuel tanks gear,pressurized,non-pressurized etc.for identification and markings of wiring and components,Airbus uses a system of identification as follows.The“V”means virtual.Some examples are;VP is a pressure seal.VN is a ground,using terminal lugs
18、etcVG is a ground.VC is a connect receptacle.VCA is a plugVS is a splice.,STANDARD RULES,STANDARD RULES,Revision Question.What are the 6 designations of wiring routes?“G”for power generation of AC and DC.“P”for power distribution of greater than 15 amp circuits.“M”for miscellaneous non-sensitive cir
19、cuits less than 15 amps.“S”for sensitive circuits such as FLT CTRL.“R”for radio audio and antennas.“T”for coax.,How to install a sleeve,How to install a sleeve,How to install a sleeve,How to install a sleeve,How to install a sleeve,How to install a splice,How to install a splice,How to install a spl
20、ice,How to install a splice,How to install a splice,How to install a splice,How to install a splice,How to install a splice,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a
21、 contact on a connector,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a contact on a connec
22、tor,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a contact on a connector,How to replace a
23、 contact on a connector,How to install a terminal on a terminal block,How to install a terminal on a terminal block,How to install a terminal on a terminal block,How to install a terminal on a terminal block,How to install a terminal on a terminal block,How to install a terminal on a terminal block,
24、How to install a terminal on a terminal block,How to install a terminal on a terminal block,How to install a terminal on a terminal block,How to install a terminal on a terminal block,How to install relays,How to install relays,How to install relays,How to install relays,How to install relays,How to
25、 install relays,How to repair a wire,How to repair a wire,How to repair a wire,How to repair a wire,How to repair a wire,How to repair a wire,How to repair a wire,How to repair a wire,How to repair a wire,How to repair a wire,How to repair a wire,How to repair a wire,How to constitute the complete p
26、/n of a wire,How to constitute the complete p/n of a wire,How to constitute the complete p/n of a wire,How to constitute the complete p/n of a wire,First exercise;What is the length of tie wrap P/N NSA 935401-04?150MMWhat diameter of loom can it hold?30MMWhich tool do we use and what tension to set
27、on the wrap gun?GS2B 3-5,USE OF TOOLS,The solution for NSA 935401-04 Look up NSA 935401-04 in the NSA index It refers to 20-33-44 Then scroll thru to page 4-a tie wrap and its length is 150 mmIt can have a bundle size of 30mm max.Now go down to paragraph“C”procedures and standard installation and it
28、 refers to 20-25-51 for the wrapping tool.The chart gives us the tool GS2B black,Legrand P46,Thomas and Betts orInsulok mark IV The setting for the tension is set to intermediate 3-5.,USE OF TOOLS,What is NSA 8420 and what is it used for?Lacing tape,Page 20-33-44 page 14 refers.,USE OF TOOLS,Square
29、Knot,Clove Hitch,Bundles should be tied together using a clove hitchClove hitch then secured with two(2)square knotsTypically tied every 3 to 4 inches(10 cm),SOLDER SLEEVES,Solder sleeve shrinkable tubing assembly having an integral solder preformPrimarily used to attach a ground wire to the braid o
30、f a shielded cableApplied using a Heat gun apply heat until the complete wetting of solder band Heatshrink will shrink simultaneously apply heat from the middle to the outer,SOLDER SLEEVES,DO NOT overheat otherwise damage to the sleeve may occurThe sleeve may exhibit slight discoloration from the he
31、ating processSlight discoloration is acceptable,but burning or splitting is unacceptable,ESPM EXERCISES,Question;What is the difference between a bundle and a harness?,A bundle is made up of many harnesses.,ESPM EXERCISES,Question;Why must we have redundancy in the wiring?,So that no single failure
32、could damage all the systems.,ESPM EXERCISES,A wire has the identification number TK 20 FR A 05 stamped on it.What is the stripping tool P/N that will be needed?Select stripping tool in the index.This will refer to 20-25-12 page 3 refers for 20 gauge.P/N is 45-1773 red handle.ASN E 0261 CF 24 U FRF0
33、4.What does the U mean?Laser printable.Why are BF wires not printable?They are too small and flexible.,ESPM EXERCISES,How would you locate a sensitive wire in an aircraft?Pink identifiers and it would be in“S”route.What does“S”route mean?Sensitive circuits.,ESPM EXERCISES,P/N of a protective sleeves
34、 used in wire repairs?First go to wire repair.This sends you to 20-53-21.Go down to page 14 item B.On pages 15 and 16 the tables give the P/N according to the temperature region used and the wire gauge.,ESPM EXERCISES,What is the P/N of end caps used for electrical wiring?20-42-13 gives P/N NSA93660
35、1 for the crimp type.The solder sleeve type is ASNE0160 listed in 20-40-00.We can now go to 20-42-13 page 8 for the shrinking procedure and page 9 lists the tool to use as CV1981.We could have also found out this tool by coming in from a different approach.In the table of contents go to tools lookin
36、g for shrinking tools on 20-25-31.This lists hot air tool CV 1981 and new infrared type IR1759.,ESPM EXERCISES,What is the P/N of the separator(wire bundle)that is used between 2 groups of wires?Looking up separator takes us to 20-33-40 Page 1 Further reading now directs us to 20-33-41.Go to page 26
37、 for drawing.Also note 90-degree rotation feature for ABS0731.Selecting separators takes you first to 20-33-41 page 29 where it says that the use of spacers in sensitive wiring is not allowed.This statement is wrong.(under revision)There is a supply of these in tool kit.,ESPM EXERCISES,A CF-20 wire
38、is damaged and how do we fix it?Go to CF in the alphabetical index and this takes us to 23-53-20.Scroll to page 3.Single strand 23-53-21.Grade damage as 1C.This means we can splice and sleeve it as per 20-53-21 page 18.Use splice RA 2322 or RK 2220.However splices RA and RK are“no stock”.What is equ
39、ivalence?Next table on page 18 shows we can use a NSA936809RG0001 splice as equivalence for this repair.Now we need to go to 20-25-22 crimping tools on page 25 for a NSA936809RG0001 splice.Tool is 46447 red in color for crimp.We will also need sleeve is P/N 937493XXX.20-42-12 page 21 for 20 gauge sa
40、ys 001.Therefore we need 937493001 we will need a now Raychem gun with a PR13 head,20-42-12 page 23 refers.,A TK twisted shielded pair wire(20 gauge)with a damaged screen is found during an inspection.How would we repair it?Go to TK in the alphabetical index and this takes us to 20-53-22 page 5.Repa
41、ir schedule depends on the area of A/C.2C,2D or 2C for this exercise.Page 13 illustrates for wire that has only damaged shield.Page 18 illustrates for wire with cut conductors.2CNow go to 20-53-29 page 5 for splice allocation table.This means we can splice and sleeve it as per 20-53-21 page 18.Use s
42、plice RA 2322 or RK 2220.However splices RA and RK are“no stock”.What is equivalence?Next table on page 18 shows we can use a NSA936809RG0001 splice as equivalence for this repair and sleeve P/N.,ESPM EXERCISES,Continued.A TK twisted shielded pair wire(20 gauge)with a damaged screen is found during
43、an inspection.How would we repair it?NSA936809RG0001 splice information can be found now by going to the NSA index and finding we now go to 20-43-12 and begin reading about splicing.Tables show us crimping tools and where to crimp.Shielding link can be made from CF22 as stated in center diagram for
44、2C repair or use a screened sleeve P/N ABS0332 repair.Solder sleeves ED160 x 2 are needed for either.Ensure the heat shrink sleeve is correct type for temperature region of repair.,ESPM EXERCISES,ESPM EXERCISES,Where is it not permissible to put a splice?Can we do a permanent repair on EFCS wires wi
45、th a splice?How many splices are permitted in a piece of wire?All these answers are found on 20-53-29 page 4.,ESPM EXERCISES,Using the Manual MethodWire exercise:2342-0006 needs to be replaced due to a broken cable.First we need to go to the AWL to find P/N,the type and the length.Master wire list-i
46、ndex.234X from our wire number now tells us to go to 91-92-34.Now check effectivity on the far side of page 001-099,205-299.It is DK 24 length is 802 cm and in route 1M.WDM 23-42-02 refers.VP is mentioned.What does this mean?It goes thru a pressure bulkhead.Now go to ESPM for P/N of DK 24 wire suppl
47、iers.,ESPM EXERCISES,What are the color code bands found on the sockets EN3155-003F2222?Go to EN index in ESPM.Find P/N EN3155-003FXXXX.First in 20-48-20 it directs us to 20-48-24.In 20-48-24 and on page 18 table we find F2222 and it shows GREEN_GREEN,ESPM EXERCISES,What is the P/N for the spring sp
48、acer placed on the wires in a pressure seal?Look for spring.This does not help,so lets look for the pressure seal.On 20-43-42 page 11 and 12 shows the spring.So P/N will be NSA 934710XXX.Part code is E from figure and type code can be 20,23 or 24 depending on wire size.E.G.NSA 934710E23We have some
49、in the tool box.,What is the P/N for the pink sleeving used to identify wire type WF.“S”in the alphabetical index.This gives us identification sleeves on 20-42-31 page 6 for part number NSA937201XXXXXX.From the table 04 is pink.Then go to page 8 for the wire WF shows when can use MA18XX or ME06XXThe
50、refore the P/N is NSA937201MA1804 or NSA937201ME0604 for pink.,ESPM EXERCISES,What is the crimp tool to crimp NSA936501TA2206?Search NSA936501 in ESPM index.This gives 20-48-11.Scroll thru to page 16 and find item“B”this P/N.Scroll thru now to page 19 for remainder of P/N TA22XX.This then shows we n
