ta190-gcr32002r0剎車轂磨損指示銷檢查

1、編碼：F-EPM-19-01TJA MED航空公司維修工程部TECHNICAL ADVISORY技術通告PAGE頁碼OF總頁/14本 TA 發(fā)送至：HNAT(TJ):各維修/過夜GCR:工程部各中心/分部/飛行部 運行控制部 海航技術各題目：剎車轂磨損指示銷檢查標準SUBJECT：Criterion Of Inspecting Brake Assembly Wearing Indicator Pins分類/CAT.：CAD使用和信息和放行標準信息其它信息ADOperation/Maenance nformationMaenance/DispatchStandardPart Informatio

2、nOthers內容：DESCRIPTION：本通告適用機型 Aircraft M:190本通告適用飛機 Applicability:ALL參考資料 References:AMM32-49-11原因 Reason of Revi:由于系統(tǒng)升級，下發(fā)本 TA 替代 TA190-32-002R7 版。/Due to the system upgrade, ie thiso supersede TA190-32-002R7.以前相關通告處理 Relation of TAs revis:本版生效的同時，TA190-32-002R7 版。Abolish TA190-32-002R7 after this

3、TA getso effectivity.正文/Content：一、剎車轂磨損情況檢查標準 1、準備工作：1) 操作停留剎車手柄設置停留剎車，確認剎車轂活塞都正常移動；注：為消除指示銷與剎車盤之間的間隙，測量時應將向外側推指示銷，使指示銷與剎車盤保持接觸。 2、檢查標準：航后工作中剎車轂磨損的檢查標準：指示銷伸出長度不小于0.5 mm;其他情況下檢查標準為：指示銷伸出長度大于0 mm。注：參見圖 1:指示銷2 wear pin；支架表面3 bracket通告TA NO.版次REVI生效日期EFFECT DATE編寫PREPARED審核REVIEWED批準APPROVEDTA190-GCR32-

4、00202016-09-20PAGE頁碼2/4題目：剎車轂磨損指示銷檢查標準SUBJECT：Criterion Of Inspecting Brake Assembly Wearing Indicator PinsFigure 1/圖 1二、剎車轂磨損指示銷彎折情況檢查標準若指示銷因剎車轂壓力盤鍵槽磨損而偏指，參見下圖 2，測量相應剎車轂壓力盤寬鍵槽寬度：若任一寬鍵槽寬度大于 37.0mm，必須在不超過 30FC 之內完成更換。注意：件號為90002340-4PR 的剎車轂已解決鍵槽磨損失效，因此無需執(zhí)行此步驟。Figure 2/圖 2 2.對于剎車轂磨損指示銷彎曲情況，標準如下：注：此處彎曲

5、為指示銷長度方向產生一定弧度彎曲，主要原因為在剎車轂磨損接近到限時，因剎車時壓力盤偏轉使得指示銷脫離支架孔，剎車時指示銷受到支架擠壓而發(fā)生彎曲。若同一剎車轂僅一個指示銷存在彎曲情況，需拆除指示銷，按MEL 32-49-11放行飛機。PAGE頁碼3/4題目：剎車轂磨損指示銷檢查標準SUBJECT：Criterion Of Inspecting Brake Assembly Wearing Indicator Pins2)若同一剎車轂兩個指示存在軸向彎曲情況，需更換相應剎車轂,否則飛機不可放行。Criterion for brake assembly wearing checkingPrepara

6、tionMake suret the emergency/parking brake handle is set and do a visual check to make suret all thstons of the brake assembly are moved freely.Note: To eliminate the clearance betn the indicator and the brake plate, push the indicator and make it touch the brake plate.Inspection standardAF inspecti

7、on standard: the length of the indicator (L) is no lessn 0.5mm;Other condition: the length of the indicator (L) is moren 0 mm. NOTE: Refer to Figure 1.2-wear pin;3-bracket.Criterion for brake assembly wear pin bent or leaning checkingIf the wear pin is leaning due to prere plate slots wearing,measur

8、e both wide slots ofthe pre re plate.If one of the wide slot width is over 37.0mm, replace the brake assembly in 30 FC ASAP.NOTE： The pre re plate slot wearing problem has been solved on brake ASSY PN: 90002340-4PR and no need to inspect the slot.For wear pin bent condition,make the judgement as bel

9、ow:NOTE: This bent condition means obvious radian at wear pin axial direction.The root cause is t, with the brake assembly near the wearing limit th n esc s from the bracket due to pre re plate deflexion and shove with the bracket when release the brake.If only ear pin is bent on the brake assembly, remove the wear pin and release the aircraft as per MEL 32-49-11.If both wear pin are bent on the brake a