TM-9-2815-220-34
ENGINE, WITH CONTAINER:TURBOSUPERCHARGED, DIESEL ,FUEL INJECTION ,90-DEGREE “V” TYPE, AIR - COOLED, 12-CYLINDER, ASSEMBLY; MODELS AVDS-1790-2C (2815-00-410-1203) AND AVDS-1790-2D (2815-00-410-1204)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
TM-9-2815-220-34 - Page 305 of 532
mediate compressIon rings wIth tHe markIng
"TOP±
or
²plP³
maRk towaRd the pisTon DomE.
OIl
coN±rol Ri²gs ³RE SymMetriCaL and may be i´S±Aµµed
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eR PaR± ¾o¿
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3-181.
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i
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In
gÄ
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tM µ¶2·¸¹º22»º¼4
b½
ºnsta³l pIston pIn in bore of pist»n¼ ½He pIston
pIn retaIning rIngs shoUld not Be insta³¾ed UntI³ the
piston and cylinde¿ are instal³ed on the engÀne,
paraÁÂaph
¾¿À6Á/Â
3-68. General
Section IX± REPA²R OF CYLINDER ASSEMB³Y
WAR´µ´G
ÃhIs sectIon covers tÄe ¿epaI¿ oF tHe cy³inder as-
semBlY¹ ÅpecIÆIc InstrÇctIons on dIsasseMB³yÈ
cleanIngÈ InspÉctIonÈ ¿epai¿ and assemB³y accomÊ
pany the ¿epaI¿ ope¿ationsË ÌepaI¿ standards oF
IndIvIdÇal components Ío³Îow the inspectIon p¿»Ï
cedÇ¿esÐ ÅtÇd IdentIÑIcation InFÒrmatIon Is inÓ
c³Çded In the ¿epaIr procedÇresÔ
3¶69·
DIsassemBLy
a.
CYÃÄndEÅÆÇ
NoÈÉ
ÃÕe twe³ve ¿ocke¿ arm cover assemÖlies
a1×e macHIned wIth cy³Inder assemÖÎIes ´s
matcÄed ÇnItsØ ½he cove¿s a¿e stamped
With matchIng ³etters and nÇmBe¿s (ÙgÔ
¾ÊËÌ)
to coÚrespond wIth the ³etter and
nÇmBe¿ stamped on tHe cy³IndeÛÜ Keep
cÒvers ÝÞtÄ tÄeIr ¿espective cy³Indersß
(Í)
P³ace cY³inder wItÄ va³vesÈ sp¿IngsÈ and reà
taIneás on ¿emoving and InsertIng valve stand âFIg¹
¾ÊÍÎ6ÏÐ
ÑÒÓ
ÅecÇre va³ve lIfter assemBlY Part Noã
_
ÎÔËÀÕ¾Õ
âfIg¼
Ö×ØÎË)
äo tÄe cy³Inder Head
Ýåth
Foǿ
cove¿ Bo³tæs and çatè washe¿s¼
½He va³ves and locks are Çnder ÄéêvY
sp¿Ing tensIonÜ ëxercise eXt¿eme care
when ¿emovInì ³ocks, retaIners and
sprIngs¼
Ù¾)
íompress eXhaÇst valve spîïðg and Çppe¿
retaIne¿ñ Ìemove two va³ve ³ocks (ògó
¾×ÀÎÚÛ,
f¿om
the gôoove In va³ve stemõ Ãap valve spring retaInö
e¿s to free ³ocks÷ íarefÇl³y loosen ³iÍter screW to
reµeaSE vaµvE SÅRingsÆ Çemove
v´³vE
LiFT¶r ass¶mBµyÈ
ÜÝÞ
øemove Intake va³ve spôing Çpper ¿etaine¿ñ
ßÕ)
øemove eXhaÇst valve innerù IntermedIate,
and oUter valve springs, Çppe¿ ¿etainer and
eXHaÇst va³ve ¿otor (fig÷
¾×ÀÎÎÛ,
from va³ve stemñ
Ìemove intake va³ve sp¿Ingú, ¿etaineô, and seat In
the same manne¿.
à6Û
Ìemove tÄe cY³inder from removIng and
Inse¿tIng va³ve stand (ûüìÜ
¾ÊÍÎÎ)
makIng certain
va³ves do not drop oÇt÷ øeplace cYliýder on sþde
and ¿emove tÄe intake and eÿĀaÇst valves tÄroÇgH
the cY³Inde¿ Bo¿e.
Notá
½empor´rI³Y Iāsta³³ vaÎve ¿ocker arm covĂ
ers on cY³Inders wItH two Bolts to p¿event
damage and mIsmatcÄIng oă partsÐ øefe¿
to ăigÇ¿e
ÖÊ6Á
F»r cover and cyÎInde¿ Idenö
tIficatIonĄ
chAâgã ä
åæçè éå
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