Tail Rotor Driveshaft Hanger

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0BHT-212-CR&010. Inspect sleeves (28, figure 65-17) forcorrosion as follows:0+-.(moo->,0a. Corrosion pitting or mechanical surfacedamage in area A, exclusive of spotface area,is acceptable for repair if within followinglimits (figure 65-20).E(DOEE,..r0)Yate.,-r>,c'.r(O..(1) Maximum acceptable depth is 0.030inch (0.762 mm).(2) No more than 40% of area withinany 1.0 square inch (25.4 sq mm), nor 20% oftotal area of any surface or diameter may bepitted.b. Corrosion pitting or mechanicalsurface damage on spotfaced surface atattaching holes is acceptable provided it iswithin the following limits:(1) Maximum acceptable depth is 0.020inch (0.508 mm).(2) No more than 20% of total spotfacedarea at any hole may be pitted.(3) No more than 20% of total areanormally contacted by washer may be pitted.(4) No more than 50% of width of areanormally contacted by washer may be pittedat any point around hole.11. Perform fluorescent penetrantof sleeve (BHT-ALL-SPM).,inspection12. Inspect shim plate (20, figure 65-17) fordamage and wear.13. Inspect plate (2) for damaged seals.14. Inspect oil collector cone (26) andsleeve (28) for damage.15. Inspect coupling retaining bolt (8)visually for damaged threads. Replace boltswhich have malformed threads.o-'16. Inspect nut (15) visually for damagedthreads. Replace nuts which have malformedthreads.65-00-00Page 48Rev.40 065-34. Repair.0)E (OnCMATERIALS REQUIREDRefer to BHT-ALL-SPM for specification andsource.NUMBERC-100C-103C-108C-114C-116C-201C-309C-317C-334C-500C-423C-434C-464cumNOMENCLATUREChemical Film MaterialChromic AcidBrush CadmiumPlating SolutionCorrosion TreatmentChromic AcidPrimerMethyl- Ethyl- Ketone(MEK)Adhesive1.1.1-TrichloroethaneCrocus ClothAbrasive Cloth orPaperTapeIndia Stonec1. Replace parts which exceed allowablewear limits.2. Replace bearings (17 and 22, figure 65-17) exhibiting evidence of brinelling, flaking,spalling, discoloration from overheating,corrosion on rolling elements, cracked orbroken retainers or do not operate smoothly.3. Replace all seals, packings, standardhardware, and all locking devices at time ofreassembly.4. Repair minor scratches, nicks, and pitson noncritical surfaces with abrasive cloth or Ipaper (C-423).5. Repair minor nicks, scratches, and burrson splines and gear (24) using India stone (C-464).
°°°°°°o°°v°oBOO(3)W-4N-1SODNCO00r0-017000)LOO0000coo000000EBHT-212-CR&OD4iits_,.,iP"A11ITEMNOMENCLATURE1Gearshaft2Sleeve3Sleeve4Sleeve5Spline-gear(Use0.0960IN.(2.4384mm)diameterpins)6Spline-innercoupling(Use0.0960IN.(2.4384mm)diameterpins)7Teeth-innercoupling(Use0.1080IN.(2.7432mm)diameterpins)8Spline-outercoupling9Duplexbearing10Gearshaft11Rollerbearing10MIN.MAXINCHESmmINCHESmmOD1.869147.475141.869647.48784ID3.148979.982063.149780.00238OD4.4097112.006384.4105112.0267ID2.834071.98362.834772.00138Overpins1.442436.636961.446536.7411Betweenpins1.146529.12111.157829.40812Overpins2.159054.83862.174055.2196ID1.377734.993581.378135.00374OD2.834171.986142.834671.99884OD1.378035.00121.378635.01644OD3.149279.989683.149679.99984NOTEAMaximumallowabledepthofwear0.005inch(0.127mm)(measurefromunwornfaceoftooth).212-R-65-19Figure65-19.Intermediategearboxoutputquillwearlimits65-00-00 Page49
Page 1 and 2:
BHT-212-CR&0CHAPTER 65 - TAIL ROTOR
Page 3 and 4:
BHT-212-CR&0CONSUMABLE MATERIAL LIS
Page 5 and 6:
BHT-212-CR&OTAIL ROTOR DRIVE SYSTEM
Page 7 and 8:
BHT-212-CR&OTAIL ROTOR DRIVESHAFT H
Page 9:
BHT-212-CR&O,..:+3NOTEIf TEMP-PLATE
Page 12 and 13: BHT-212-CR&0(b-n--1 0-ca0)0ohm^mNOT
Page 14 and 15: BHT-212-CR&O--{-gym2 CAUTIONIN ORDE
Page 16 and 17: mI-:BHT-212-CR&O15INTERNAL SPLINESI
Page 18 and 19: BHT-212-CR&OA Acceptable pattern ty
Page 20 and 21: BHT-212-CR&ON7 U----HANGER-204-040-
Page 22 and 23: BHT-212-CR&0I65-14. Cleaningmm300MA
Page 25 and 26: BHT-212-CR&O1. Output quill2. Nut3.
Page 27: BHT-212-CR&0Required dimensions sha
Page 30 and 31: BHT-212-CR&O.w.212-040-506-1 CASE A
Page 33 and 34: BHT-212-CR&0(3) Grind new blank shi
Page 35 and 36: BHT-212-CR&010. Prepare data plate
Page 37 and 38: cBHT-212-CR&02. Hold outer coupling
Page 39 and 40: BHT-212-CR&0SEAL (13) PARTIALLY SEA
Page 41: BHT-212-CR&0000000)0)0)1a. Inspect
Page 44 and 45: BHT-212-CR&O711140,a11 1e9ITEM NOME
Page 46 and 47: BHT-212-CR&OTOPHEEL TOPHEEL i \ TOE
Page 48 and 49: .-.BHT-212-CR&ONOTES7. Unacceptable
Page 50 and 51: BHT-212-CR&OACCEPTABLE212-R-65-14UN
Page 52 and 53: BHT-212-CR&ONUMBERT101307T101333T10
Page 55 and 56: BHT-212-CR&065-29. OUTPUT QUILL.65-
Page 57: 0BHT-212-CR&O5. Perform magnetic pa
Page 60 and 61: BHT-212-CR&0SEAL (13) PARTIALLY SEA
Page 64 and 65: B HT-212-C R &06. Repair inner coup
Page 66 and 67: BHT-212-CR&O-4CAUTIONto 203.37 Nm)
Page 69 and 70: BHT-212-CR&OTAIL ROTOR(90°) GEARBO
Page 71: BHT-212-CR&O4. Remove sealant from
Page 74 and 75: 0BHT-212-CR&O1. Shaft 13. Stud 25.
Page 77 and 78: BHT-212-CR&07. Inspect following pa
Page 79 and 80: *l.l-.BHT-212-CR&011 13MIN.MAXITEM
Page 81 and 82: B HT-212-CR&0ACCEPTABLE WEAR PATTER
Page 83 and 84: BHT-212-CR&015. Repair or replace s
Page 85 and 86: BHT-212-CR&ODIAMETER A(SEAL CONTACT
Page 87 and 88: BHT-212-CR&OSPECIAL TOOLS REQUIRED
Page 89 and 90: BHT-212-CR&Oa. Cap adapter (10, fig
Page 91 and 92: BHT-212-CR&OSEE DETAIL B16INSTALL W
Page 93: BHT-212-CR&O-48. Inspect outer coup
Page 96 and 97: BHT-212-CR&OA Acceptable pattern ty
Page 98 and 99: BHT-212-CR&ON^D--I--DOff'0(DD)j"'ZZ
Page 100 and 101: BHT-212-CR&0Table 65-1. Magnetic Pa
Page 102 and 103: BHT-212-CR&0Table 65-1.Magnetic Par
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Tail Rotor Driveshaft Hanger

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