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COMPONENT MAINTENANCE MANUAL 

BA27

 

 

24-01-01

 

T

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is docum

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 contains D

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led by th

e U.S. Export Admini

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tion 

Reg

u

lati

ons. Di

versio

n or use 

contrary to U.S. law is 

proh

ibit

ed

 

 
J Rejection 

Procedure 

  
If the battery fails any of the procedures listed below: - 
 

 

Commissioning 

 

Battery shop test upon removal from aircraft 

 
it should be rejected, and notification of failure sent to the manufacturer. 
 

Crane Aerospace & Electronics  
ELDEC Corporation 

PO Box 97027 

Lynnwood  
WA 98037-8503  
USA. 

Page 17 
 
Jun 26/20 

Summary of Contents for BA27-01

Page 1: ...D ACID BATTERY PART No BA27 01 BOEING P N S281W501 2 COMPONENT MAINTENANCE MANUAL WITH ILLUSTRATED PARTS LIST DOCUMENT No 9602 0516 Rev 11 COMMERCIAL EXPORT ADMINISTRATION REGULATIONS EAR THIS DOCUMEN...

Page 2: ...T MAINTENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited This page is intentionally lef...

Page 3: ...Reference 24 01 01 component maintenance manual CMM Herewith Revision No 11 dated June 26 20 This revision of the component Maintenance Manual has the following modifications UCHAPTER UPAGES UACTION...

Page 4: ...COMPONENT MAINTENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited...

Page 5: ...egulations Diversion or use contrary to U S law is prohibited URECORD OF REVISIONS REV No ISSUE DATE INSERT DATE BY REV No ISSUE DATE INSERT DATE BY 01 Apr 25 95 02 Jun 30 95 03 Apr 16 99 04 June 09 0...

Page 6: ...T MAINTENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited This page is intentionally lef...

Page 7: ...This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited URECORD OF TEMPORARY REVISIONS TEMPORARY REV No PAGE No ISSUE DA...

Page 8: ...T MAINTENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited This page is intentionally lef...

Page 9: ...or use contrary to U S law is prohibited USERVICE BULLETIN LIST SERVICE BULLETIN UNUMBER REVISION UNUMBER DATE BULLETIN INCORPORATED UINTO MANUAL UPRODUCT IMPROVEMENTS Product improvements have been i...

Page 10: ...T MAINTENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited This page is intentionally lef...

Page 11: ...25 26 June 26 20 June 26 20 Service Bulletin List SBL 1 June 09 06 Assembly 27 28 29 30 June 09 06 Mar 11 16 Mar 11 16 June 09 06 List of effective Pages LEP 1 Jun 26 20 Special Tools Fixtures Equipm...

Page 12: ...COMPONENT MAINTENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited U...

Page 13: ...y to U S law is prohibited TABLE OF CONTENTS UParagraph TitleU UPage Description and Operation 1 Testing and Fault Isolation 7 Automatic Test Requirements not applicable Disassembly 19 Cleaning 21 Che...

Page 14: ...T MAINTENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited This page is intentionally lef...

Page 15: ...ctive Pages 6 Procedures and IPL Sections The disassembly repair and assembly sections generally contain only specific instructions to be used on the equipment covered herein Most standard aerospace p...

Page 16: ...COMPONENT MAINTENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited...

Page 17: ...ht Controls DC Bus while switching between permanent magnet generator PMG transformer rectifier unit TRU and Hot Battery Bus Sources The Battery consists of two 12 volt Sealed Lead Acid monoblocs conn...

Page 18: ...TENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited Sealed Lead Acid Battery Figure 1 Pa...

Page 19: ...lay contacts that connect the battery via the resistance to the flight controls dc bus is controlled by logic circuitry within the Flight Controls Power Supply Assembly The battery is capable of suppo...

Page 20: ...rt Administration Regulations Diversion or use contrary to U S law is prohibited C State of Charge The battery is designed to commence discharge when the open circuit voltage OCV is within the 80 100...

Page 21: ...ct of temperature on battery capacity at various discharge rates Variation in Performance with Discharge Temperature Figure 2 Page 5 June 09 06 DISCHARGE PERFORMANCE SELECTED DISCHARGE RATINGS AS A FU...

Page 22: ...ery Weight 6 577 Kg Max 14 5 lbs Dimensions Overall Height 115 00 mm Max 4 528 Overall Width 92 00 mm Max 3 622 Overall Length 324 00 mm Max 12 756 Handle Extension 35 60 mm Max 1 402 Connector ITT Ca...

Page 23: ...Ref Fig 8 2 URequired Test Equipment Ref Fig 4 U UNOTE U Test equipment having equivalent specifications can be used NOMENCLATURE MFR MODEL PN APPLICATION DC Power Supply Mead Testing F1 regulated 40V...

Page 24: ...ministration Regulations Diversion or use contrary to U S law is prohibited 3 UTest Equipment Set Up A Capacity Testing Connect the battery to the discharge test unit in accordance with figure 5 B Rec...

Page 25: ...the battery is removed from storage D Storage Battery open circuit voltage cannot be allowed to drop below 25 3 V min during storage It is recommended that the fully charged battery be stored in a coo...

Page 26: ...ng the initial 12 months storage period When stored at temperatures at or above 35 C the battery should be inspected every 6 months UNOTEU If the storage voltage is lower than 25 3 volts perform a boo...

Page 27: ...he open circuit voltage of the battery can be used as a guide to the state of charge of the battery The graph in Figure 7 is an indicator as to the state of the charge of a new battery Open Circuit Vo...

Page 28: ...on etc 2 Examine the battery terminal connector for signs of corrosion damage and water dirt ingress clean if necessary 3 Check open circuit voltage if the open circuit voltage is greater than or equa...

Page 29: ...f the discharge duration is still below 60 minutes reject the battery in accordance with paragraph J of this maintenance manual G Commissioning Capacity Test 1 Discharge the battery at 5 amps to an en...

Page 30: ...ltage charger capable of constantly supplying 28 5 volts with a minimum supply current of 10 amps Using the set up illustrated in figure 5 Minimum charge time 6 hours UNOTE U If the battery fails the...

Page 31: ...fault finding procedure below 3 Fault Finding Procedure There are two options available for carrying out the fault finding procedure depending on the available discharge equipment a Option 1 Using a 1...

Page 32: ...lts and record the results iii Recharge the battery in accordance with paragraph H iv Allow the battery to stand open circuit voltage for 4 hours minimum v Discharge the battery at 30 Amps to an end v...

Page 33: ...trary to U S law is prohibited J Rejection Procedure If the battery fails any of the procedures listed below Commissioning Battery shop test upon removal from aircraft it should be rejected and notifi...

Page 34: ...e of malfunction and isolating the cause to a specific component TROUBLE PROBABLE CAUSE REMEDY Zero battery voltage Broken or loose terminal Repair per repair connections instructions Loss of battery...

Page 35: ...2 USafety UWARNINGU Caution shall be exercised when testing building and handling batteries as monoblocs are fully charged and any short circuit condition may result in injury UWARNINGU To avoid risk...

Page 36: ...binx nut 140 plain washer 130 and wire from the positive terminal of the rear monobloc Ref Fig 1 The nut and washer should be discarded E Remove the binx nut 140 plain washer 130 and wire from the neg...

Page 37: ...U S law is prohibited UCLEANING 1 UGeneral A The following item is required to perform the cleaning procedure Soft clean dry cloth 2 UDisassembled Battery A Ensure that no particles from the drilled r...

Page 38: ...COMPONENT MAINTENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited...

Page 39: ...d on the aircraft If the date of installation was 3 2 years ago or more do the test given in paragraph I Battery shop test upon removal from aircraft K UBattery case and lidU Examine for 1 Cleanliness...

Page 40: ...COMPONENT MAINTENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited...

Page 41: ...led by the purchaser Alternatively the expired battery can be returned to an approved repair agent for re blocking 2 UZero Battery Voltage If the open circuit voltage is recorded as zero either i Repa...

Page 42: ...COMPONENT MAINTENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited Page 26 May 14 13...

Page 43: ...ding and handling batteries as monoblocs are fully charged and any short circuit condition may result in injury UWARNINGU To avoid risk of injury care shall be taken when wearing jewellery such as rin...

Page 44: ...he case walls in the centre and place monobloc in 2 Slide the monobloc up to the inside front wall 3 When inserting the second monobloc slightly angle it towards the connector block to avoid catching...

Page 45: ...cks using wire ties 100 9 Take the series lamination 120 connect the two monoblocs together using two binx nuts 140 and two plain washers 130 tighten the nuts to a torque of l 0 0 1 Nm and then place...

Page 46: ...PONENT MAINTENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited Figure 9 Page 30 June 09...

Page 47: ...items A The equipment detailed in Figure 10 is required to disassemble test and reassemble batteries ITEM NUMBER ITEM PART NUMBER 10 0BDrill 20 3 2mm 125 Drill Bit 30 Torque Spanner 7mm 276 Socket 40...

Page 48: ...COMPONENT MAINTENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited...

Page 49: ...cts the relationship of the item to the associated next higher assembly 2 Effectivity Code Reference letters A B C etc are assigned in the EFF code column to each top assembly The reference letter of...

Page 50: ...FIG and ITEM NO column 7 Alpha Variant Item Numbers a Alpha variants A Z except I and O are assigned to existing item numbers where necessary to show 1 Added Items 2 Service Bulletin Configurations 3...

Page 51: ...TENANCE MANUAL BA27 24 01 01 This document contains Data controlled by the U S Export Administration Regulations Diversion or use contrary to U S law is prohibited Battery Exploded View Figure 1 Page...

Page 52: ...EW B C D 4 80 2207 9649 WASHERS A 4 90 2207 9634 NUTS A 4 100 2107 9761 WIRE TIE P O KIT ITEM 230 2 110 2107 9658 TIE WRAP BLOCK P O KIT ITEM 230 2 120 2207 9677 LAMINATION SERIES P O KIT ITEM 230 ATT...

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