DMWR-9-2815-220
AVDS-1790 ENGINE OVERHAUL STANDARD
DEPOT MAINTENANCE WORK REQUIREMENT
DMWR-9-2815-220 - Page 335 of 1422
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DMWR 9-281 220
5-40.l
(Cont)
±a)
ApPLy ²iquid penetraNt and InsPect we³d Per M´µ-1-6866¶
±b·
AccePtaNce criteria is ¸o ³i¸ear i¸DicatioNs Due to WeLD cRacking,
crate¹ cracking, Lack of Fusionº
etc»
¼o porosity exceedI½g oNe-eightH I¸ch
"DiamEer ¾or a si½g³e iNDicatIon on the entire we¿ded areaÀ or more tHaN THree InDIÁ
cat iÂÃs ³arger than Ä/Å6 Inch Diameter
on
tHe entire We³deD area»
¶¸¹º
»
_¼ ½»
¾
¿
Æ6·
ÇressUre test I½ accordance witH ÈÉM/M60 ÇÊ 62236,
˳ass 6 ±ÌOOÍsI)Î
bÏ
Ðressure Oi¿ ÇumÑ ÒousInG ±Ñart noÏ
ÓÓ683965) and ScavenÔe OI³ ÇUÕÑ
ÒoUsINÖ
±Ñart No¶ ×Ó683946·Ï
ØepaÙr wor½ iÕpe³Ler Bore surFaces Úy arc weLDing»
ÛeFer to
ÜÝÞ's ßà83á7Ó ±5/25Ó· aNd Óâ68399ã
±5/246·»
äe³ders to be QuaåiFieD Per
Mæç-èé-Ó595
•
ê
±Ó)
ÈhoroUgh³y c³ea½ a½d Degrease HousiNg wItH tricH³oroetHy³ene Degreaser¶
(2·
ëith a sUItab³e grI½DerÀ
macHI½e a re³ief aPproximate³y
3/32 Inch deep and
3/×6 inch hIgh arounD tHe circumference at tHe BottoÕ of the Housi½g as sHown In
Figìre 5í43¶î ±5/202»2)Î
±3)
ïaBrIcate two fLat ¾iXture pLates a½d drI³L to matcH tHe boLt patterns oF
tðe Housing to be rePaireD»
AttacH tHe Fixture PLates to tHe HousiNg UsiNg at ³eas
Four tðru-boLts ±FigÏ 5/43»î· ±5/2ñ2Î2·»
òðis WiLL ÕiNiÕize DistortioN oF tHe
Housi¸g a¸D serve as a Heat sInk Duri½g weLDINgÏ
óHe PLate over tHe iÕPeLôer bores
sHoõLD be oPe½Î
±4·
ösi½g tHe gas tu½gsten arc we³diNg process IN accorda½ce ÷ItH M´øùú-8604
aND M´ûüý-45205þ ÷e³D tHe ImPe³Ler sUrFaces as describeD BeLow:
±a)
ÊeposIt a strInger BeaD at the bottom of Bore aNd up tHe sIde to tHe
top¶
±b)
Øÿpeat tHe processĀ a³ter½atiNg sidesº UNtiL imPe³Ler surfaces are
compLeteLy reneWedÎ
ā½sure tHe weLds over³aP sufFIcieNtJy toĂ aL³ow ¾or remachiNIng
to Dra÷Ing to³erances¶
(5)
ăacHine and po³IsH impe³³er sUrfacesþ UsIng a suitaB³e grInDerþ to dra÷ing
sPecIfIcatIons
(OwG
ÓÓ683965 or Ó×683946)¶
±6·
Ą½spectIon»
±a)
ApP³y LIąuiD peNetrant and Inspect WeLded area per M´ç-Ćù6866Ï
±b·
AccePtaNce criteria -
¼o Li¸ear i½DicatioNs Due to weLD crackingþ
crater cracki½gþ ³ack of fUsion, etc¶
¼o porosity exceeDiNg
ć/8 iNcH
DiaĈeter ¾oĉ a sINg³e I½dIcatIon oN the e½tIre surface or more tHa½ tHree INdIcaÁ
tio¸s ³arger than ×/Ó6 iNcH
DIameter oN tHe entIre surfaceĊ
ċ
Č
(cč
OIĎ ÇìmÑ ´ĈÑe³ďeĉ ÊrIVe Shaft ±Ñart no¶ ××683960)Đ
đecďaIĒ ēorN
spaceĉ BeaĔInĕ sĖrfaces By me a³sprayė
đefer to O´Ę ęĚ683960 (5/233)ě
5/202¶Ĝ
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