DMWR-9-2815-220
AVDS-1790 ENGINE OVERHAUL STANDARD
DEPOT MAINTENANCE WORK REQUIREMENT
DMWR-9-2815-220 - Page 246 of 1422
DMR 9 2815-220
5-31.
(Cont)
(2)
Piston and pIston pin.
WARN±NG
Use goggles, rubBe² gloves, anD ²ubbe³ a´²oµ whEn cleaµIng ´arts in
ca²bon ²emovIng com¶ounD.
·²ovIDe aDequate veµtiLatIon.
AvoiD
iµha¸atIoµ of f¹mes aµD skin contactº
»f com´o¹µd is s´¸ashed oµ
sKiµ, Flush wIth fresh water anD wash with alcoho¸¼
A¸cohol contaiµ½
Ing 2 to 3 ´e²cent cam´ho² is ´refe²ab¸e¾
(a) C¸eaµ ´istons and ´iston ´ins by soa¿Ing In ca²boµ ²emoving com´oÀnd,
M±ÁÂSÃÄ2382 (O²d Ty´e »).
Åb)
Sc²a´e remaIninÆ ca²boÇ De´osits f²om ´istoµ ²ing g²ooves with a
sc²a´e² o² b²oken ´iston ²Iµg.
Èe ca²eF¹¸ µot to scratch o² goÀge
riµg grooves.
C¸ean oIl D²aIn holes aµD oIl ²ing g²ooves iµ ´istoµ.
Éemove ca²bon f²om oIl holes In ²Ing g²oovesÊ
Ëleaµ ca²bon F²om
´istoµ ´ins with c²ocus c¸oth DI´´eD iµ dry cÌeaning so¸veµt (·ÂÍÂ
680Î Ïy´e »±).
5Â32.
»ns´ectioµº
aÐ
Ñene²a¸Ê
»ns´ect the ´Iston and connectInÆ roD assemb¸y acco²diµg to in½
st²¹ctIons in ´a²ag²a´h 5Â4 (5/2
) and the Ò»·'s InclÓDeD iµ thIs sectIon.
Wear liÔits, FIts, anD tole²ances Fo² the ´Iston aµD coµµectIng ²oD assembly a²e
lIsteD Iµ tabÕe 5Â9 (5/Ö25)×
Øee ´a²ag²a´h 5Â4, b
anD c (5/ 3 ) fo² ex´¸aµatioµ
oF wea² lImits, Fits anD to¸e²aµcesº
Ù
b
.
·iston.
(1)
·Istoµ insÚectionÊ
±ns´ect ´Istoµ Fo² c²acKs, flaws, o² dIsto²tion
¹siµg Dye ´enet²ant metHoÛÊ
·ay ´articu¸a² attentIon to the a²ea along the to´
riµg g²oove Iµse²tÊ
Ü
AÝso Ins´ect ´Iston fo² Damage o² brokeµ ²Iµg lands, µIcks,
b¹²s, o² sc²atchesº
4
,
.
(2)
Þoß ²Iµ
f
roove.
Check to´
à
²Iµg g²oove oF the ´iston ÓsIng ta´ered
á
´
I
stoµ ²iµg gage
âãgÊ
2-4±
(2/ä2 ) as shoåµ iµ FIgæ²e 5Â26 (5/ç23)¼
èhe
shéÀêDe² of the gage Ô¹st µot to¹ch the shoÀ¸Der oF the ²Iµg ¸anDÊ
(ë)
·Iìton ßiµ.
»ns´ect the ´istoµ ´iµ fo² cracks ¹siµg íagnetIc ´a²tic¸e
method¼
Aîso visÀaï¸y ins´ect Fo² nicKs and meas¹re For wea²Ê
c¼
ðoµµectInñ RoD AssemblY¼
(Ä)
òoµnectiµó roD bea²Iµñ bo²eÊ
òheck rod bea²Ing bo²e ôIth a bo²e Dial
IndIcaõo²ö
5/Ö22
I
j
)
.
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