DMWR-9-2815-220

AVDS-1790 ENGINE OVERHAUL STANDARD

DEPOT MAINTENANCE WORK REQUIREMENT

DMWR-9-2815-220 - Page 290 of 1422

DMWR 9-2815220

5-36. 1.

Reclamation.

Worn intake valves (part no. ±0951239) can be reclaimed

By arc weLdIng accordiNg to the foLLowing Procedure²

Refer to O³´ µ095µ¶39 (5/µ77·.

a¸

UsInG a s¹ItaBLe vaºve griNdi»g Machine, u»dercut the vaLve face as necessary

to e¼I½inate tHe s¾rface defects¸

b¿

Attach the vaºve to a ±¶Àinch aÁrcraft weLdINg turNtabLe to obtaI» ProPer

rotatioN ÂHÁLe Âelding¸

c.

ÃsIng tHe Semi-automatIc gas tunGsten arc ÂeLdinG process, Âeºd the macHined

surfaces of tÄe valve seat²

Ãse standard ±Å8 inch

x

±4 incH weldinG eºectrodes

(ÆÇÈ 3É39-0±À0¶¶-5Ê48Ë

F

)

in accordance wÁtH ÌÍÎ-R-±7±3Ï A and AWÇ 5²±3²

ClV

'

5oS

d²

OverBuILd the weLd s¹ffIcient¼y to aLlow for fINish gri»diNG of tHe weLded

surface²

e.

ÐsING vaLve grIndÁNg ÑacHÁneÒ fInIsh grINdINg the valve to drawI»G

sPecÁfIcatIons ÓÔWÕ µ095µ¶39·.

Ö×TE

Quality ControØ wÙlL inspect finished Parts to ensure adherence to tHis

Procedure¿

±/

5/±Ú¶²1

(5/Û6¶.¶ bLa»k)

²

³