aI

1 J'Eygjy 400 hours: Check all fixing boltsj^-S- NoteThis check is to prevent a leakage of exhaustgas and lubrication oil due to looseness of boltand nut.

$

P.1 /7RH 1 43/1 63, 183/203 MiE/ffiffiHmilR-#En+ffiiE

;r Hfftofi4>F

1.1 400 ffiF'l E: &frfrItffioHtftt-----,- t dA5 trEts

6 fll O zfi/ [, F . t,y F 0) ffi 7J,1 =

& 6 tf FII -;. Q)

#FAri 1iffin e, L'i t|d ;F ;H iffitrL a$fi JL "

1.2 1200 E*F"l E: 9-€>E-roE+E)fttuqoHtft (Photo 1)1 .2 Every 1200 hours:

A cautionCheck if the rotor rotates smoothly by hand. lf therotor rotates heavily or touching noise occurs, theturbocharger must be dismantled for inspection.(Refer to the Instructions and Chap.1.3.3)

1.3 Every 4800 hours: Check theclearance of rotor

1.3.1 How to measure clearancesOAxial clearancePhoto 2 ','f

: Push turbine shaft to turbine side end by hand.:Set dial gauge to zero.Photo 3: Push turbine shaft to compressor side by hand.: Record the reading on dial gauge. .

:This reading is axial clearance.

Check therotation of rotor

(Photo 1) A,EHt_c> E_rt+E LL. E l+fl,tr r,J fr/;<+E<E?r,lf,iEHt'f .E < E 6 rhe{p +tfiHE A F> 6trA ttEH <"

t a(*FfltIH ffit?1c(Ttur " (ry +eEnEE=&ri' r .3.3 rHtaffi t(<fi'31 \. )

1 3 4800 ffiF'ltr1 .3. 1,t-c> a-9 A r. )7 ->ZH tft,zE+tFj

EfiHo+fifiFt2t)7->7AE+tE{ ,

Photo 2:9-C>n-Ftr-C>{HlJl: E -tTffit ". g', 4 * )vt -i ooH, tEftFt 6 "Photo 3:=>JV'yt{R|JrE -tT+Ft ": 9 4 I )vf -) A {F-t--afr,A.HYA ". zo) {E fr+frfi fir. )7 7> z LtJ6

"

RHl 43-203AP-1.R0

@Radial clearance: Set the dial gauge pointer at the top end ofcompressor impeller and set dial gauge lo Zero.

Photo 4: Push the turbine shaft up0Vards at compressorside by hand.

:Record the reading on dial gauge.Photo 5 *

';

:Push the turbine shaft downwards at compressorside by hand. ':

: Record the reading on dial gauge.:The total movement from upper position to lowerposition meanp radial clearance.

.r t._

!tU-"--,-

A5 Noteo Repeat' the measurement at least 3 times, and

check if the average recording is withinpermissible range in below Table 1.3.2. In caseof overhaul or inspection, refer to the Instructionsmanual and Chap, 1.3.3.

/ ! \ Cautiono Cover Lub. oil inlet and outlet with rag to avoid

dust invasion.

o Compressor impeller is made of Alalloy. Becareful not to make the impeller blades bent ordamaged.

1.9.2 Peimissible range, of clearahie (mm)

Turbo-charger Axial Radial

(When delivered)RH 143,/ 163 0.06 -0.12

0.80(0.45^'0.60)

RH183,/203 0.08-0.15 0.80

(0.45-0.60)

P.2/7

@+'{8fifr2u7->7a#tFr|: 9 4 \ tvt -rt=2j v'y t 4 > x- Jl'vffiFFa-tz,yFtk o.He-#E t 6 "

Photo 4: 9-C > E -t A=>J Vy+/{R|J e Lfi Ftt=+Fq. ,.

:94r.r )vf -)a{Ee-# afiyei:Photo 5: =2J Vy+'fil eT fr frIt

= T rf ,6 .

. 9 4 I )v f -) a {Et-'afi,A-HyA "

: t fi fi&T fr Ft a frE+ 75r+ Eh Ht.)T ->7Lti6"

}..F--,.i\5 trEE,

o r' )7 -> 7E-+;FI lt3 E fEJg ffi LJ tr t-?1lJ L r .+ rg {E t : < 1 .3.2rF & ffi A tE-+ 6t{E 14 |

= b 6=

LtfiEEBT t L \ o F'rlfrfi tH+F HtA751l. EEEA lt 1 .3.3 rHeCN ff +k=-"frnn

= t 6ffi t ( < fi' 8

L\o

/!\ ,EHo tF{ tFtH (Lo) ofr

^u) tr lt I -7$t:(j=iE

^tlfiv\("<f:3ur"o =2Jv,yt4>^7\t7l],=lFtTt " HyL)

*L r.

1.3.2 rt)7->ZE-+6{E (H{n mm )

fr'rt, +Hf FJ +'{EfiFt(ftfi 8+)

RH 143,/ 163 0.06 -0.12

0.80(0.45-0.60)

RH183,/203 0.08-0.15 0.80

(0.45-0.60)

RHl 43-203AP-1.R0

tO

.3.3 Overhaul and inspection ,

Instructive points of overhaul

It is recommendable to have overhaul cleaningand inspection at every about 4800 hours use. Incase heavy contamination is found, the interval ofoverhaul should be adjusted as occasiondemands.

o Be careful the carbon covered over the shroudpart of turbine housing is quite hard to remove itand looks like metallic surface.

o Check if there is groove due to erosionsurface of gas passage.

o Radial tip clearance at gas outlet part

on the R

Fiq. 1

P.3/7

1 3.3 e{6 al*1fifjH+F&Htft ' F#ffiH}Fn*oHH+H

o FnlffiHfFFultfffil*E F tt-T 4800 E*F"l trt+fr' F t*f 75r iE fuzlr# LLt tre I*RE z5t b 0)

Frl tI tH *F F"l [H e f;E fffivT< E 3 L \ o

o hltfi;HfFffi ..9*t>trD i>r2tzt l':fliLil,T;H+FT8Ur.

o tj ziEfiF*trt={EA (- n -i=>) 75r#+ t(L \ /i L t zlrfiE-ifl t( < E8 L \ o

o E+E (Dr-c) E-tti ZH n f,fiGfi Ft?t)77>7

RI

Clearance RMeasuringPosition R2

R3

:Clearapce gauge

Please check and clean if carbon and s{udge oflubricating oil accumulate at back wall of turbineimpeller and groove of seal ring.(Refer to Chap.3)

R1,t)71>.^RE+tF||{nE R4 R2

R3

,i-+-rrl=(E-+tFl

t -e )H F H tr FI3 &6> - )vU > rt#fll {-}iE l=h-rl'i)tptF{ tFtH O 7-'viItl,t=LAnrtftffi u( L \/J u \ 75\fi8-# L . tfi fH t( r \ 6EAt*ryrJhu\(TtLr. Q r[6ffi)

t"I

Turbine housing

Ii

XPos.1

Seal ring and

groove

Turbine wheel

frrrt ,.)7->7 R1+R3. R2+R4(#E{E mm)

RH1 43,/ 163 0.70 x 2 = 1.40

RH183,/203 0.90 x 2

TypeClearance R1+R3. R2+R4

(Design value in mm)

RH 143,/ 1 63 0.70 x 2 :1.40

RH 183./203 0.90 x 2 :1.80

RHl 43-203AP-1.R0

Caution

o Recommended replacementand thrust bearing is 2 years.

interval of floating

o In case of turbine wheel cleaning by_,soaking inhot water or carbon removal solvent, rustpreventive oil must be applied to the turbine shaftfrom groove for seal ring to the end ofcompressorrrvheel side before soaking of it. lfprotection is nOt enough, corrosion can beoccurred. (Refer to Fig . 2)

o Seal ring must be replaced at every overhaul andremove the carbon deposits from sealing groove,if accumulated. As for the wear of sealing grooveof turbine shaft, refer to Fig. 3.

Fiq. 3 Worn area

tr*tfrlUsable

f#f;fiftH "IHE/;:lJitE

Turbinewheel side

'-E'>H,IFIJ

Unusable

fSftfieHT qlHE/;fituq

Turbinewheel side,-E'>H,IR|J

yl

Soak only turbinewheel part up torear wall in hotwater or carbonremoval solvents,

'iFl zl< frr 6 t\ l* t-fi>w*f,|Jtr,_C>HHOHET(.:IT6

This part must i

be covered byrust preventive0il.

i

-7#a1fiffiH;F{;Ff,ltfrfi't{*:-a?Aa

Fig.2

,EH

o +fi F (27 zFAz U>2' &t-fz E-74> 2 d7 U > 2 ) A+fi F t fFE+ F"l rt 2+Fpltf .

o Fni fif tF+F ft+ t- C >H+tiEzl< b 6 u r

It h-fi> Ir+ *f,tj t:;E f trA Ht- C> E - g A > - )vt) > 2' i#FtJ & U') v-til, FII z5r 6 =2J v'y t 4 >^7.lRl a+H fffit<'. I=2 t) -Z+ t+1z\r=trfrL.. E A U/J u\+t . {* i€ L ( < fi'* Lr

"{*iEirf ,}Ttit"\rea . HA hrftEt6,hlrbu)*t. Gts.26ffi)

o >- )vt)>2' lt Frlffi E+ jc+fr t(T 8 L \ o

r9ffit.rtr ir b 6tre I t tfrtFt,ht$yU [h u r(TtLr"iAi.. r-C>tr-rat:: u \( lt Fig. 3 t64 t: L(<fi'31 \ o

For reference: Standard Dimension

6E ,B*tEEF{ERHl 43/ 163

RH183/203

RHl 43-203AP-1.R0

2. Cleaning of Turbine side partsCarbons at shroud part of turbine housing andturbine wheel normally include very hard layer ofCalcium and Vanadium. Therefore clean them byhard wire brush or scraper. (Remove the droppeddeposits in turbine housing surely after cleaning.)

2.1 Cleaning procedure

o Turbine wheel (Sample after cleaning: Photo 6)1) Remove the carbon carefully by wire brush or

scraper.2) lf it's hard to remove the carbon, soak only

turbine wheel in hot water or carbon removalsolvents according to Chap . 1.4 Fig. 2.

o Turbine housing (Shroud part)1) Remove the carbon carefully by wire brush or

scraper.2) lf it's hard to remove the carbon, penetrate the

cleaning solvents in way of covering by wet ragthat is soaked with solvents.

3) Photo 7, 8 show a sample of utilizing cleaningtools. This pneumatic tool that has bundledabout 30 wires (2mm/pc) works effectively toremove carbon deposits on gas passage. Useit not to damage material of turbine housing,itself. Also do not use it for cleaning of turbinewheel 'in order to prevent the damage forturbine wheel.

P.5/7

2. t-c)filJOiFffri=:u\(,-t>r rD i>, A2=-,|':'FII \5t-C>HF l:ltt )v>t l,'{rr tfi, L+te /.

' f:6FL\t-rfi >EzlrtfiTH tt t A('.. fiEt\ 74 f) 7:z <s 7, v - t t t =( T F t :,# Lt( <

EtL\ o CEffiIAt \, i>rJ'6 l:gt>tiEtLh zt*+A l:ql qF;t \ (<fi* u r " )

2.1 tH+Ba+lilFt::L\(

"-C>HF (tH+F{til : Photo 6)

1 ) fiEt \, 4 +)-?P72v-r tl=(TFt:,-fi>t,#LVT<fi'81\o

2) ,-rl-)hr,#Ll,-l=<V\thelt 1.4 IF FIG.

2 aE fiE T t- C > HFll fi ltt ;El zl< b,6 u tI#r-fi > Fft tfilj I

= ;= t( < EE L \ o

. t-t > trf i>r' (2 =7t l':*fl )

1 ) fiEt \t 4 f)->\5rrv-r tl:(THt=,-rl-)t,#t:T<fi'81\o .

2) ,-rfi>ir ,#t Ll:(U.r Lfre H., -7S t:ift,i+ i&t€ t tf ( 2 t-, l.: t : jf:" i+ t&t ]AiE*tf (<fi'81\o

3) Photo 7,8 lt-7-24+)->TA;HfFbttT<"t " t{E fr\ 2mm./1 AzSr 30 AfE Jg H,ia blrL< t;L),. T / H. f z.iEEFfrll ofi-rl'i> e. Ltii,rrl-ii y F,# tL |

= E *ncf .

=a&) /;EE t[fr.H 3?r 6tre l* t \, i

>, A p/Frf tHtJ tJ HI,2 t U tffi . ilg L(.fHffiU(<E8L\oiAi . E/Ft tlE b 6 "I HEE75r b'u) tt ar,- c > HHatH +B t= lt.fH H vtJL \ ('.< fi' 3L\o

t.7

Air-wire brush

RHl 43-203AP-1.R0

Gautiono The degree of contamination on turbine wheel

and its surrounding area differs from theindividual operating condition. Even after thecertain running hours .shorter than therecommendable overhaul interval, thick carbonmay accurnulate on turbine wheel and the areasurrounding "it. Excessive unbalance causestouching of turbine impeller and compressorwheel at shroud part, which rTl€lyr ledd todamage of bearing part. Therefore special careshould be taken so as to overhaul and cleanearlier for prevention if engine is running withheavy fuel oil, ".i

o Remove the carbon deposits on turbine wheel, evenly as much as possible. Uneven cleaningmay cause the unbalance of rotor.

o Confirm that the rotor can turn smoothly byhand after cleaning.

o In case of the coated turbine housing, do notdamage or tip the coated parts when cleaninggas passage. (Fig"1 X Pos.1 )

3. Accumulation of carbon depositsOil leakage or bearing damage can be occurredby coking of lubrication oil around the sealingsection, because of heal soaking from turbineimpeller after engine stopt'ed.Photo 10 shows slightly coked deposits in LOspace around seal ring at turbine side I

Photo 11and 12: After cleaning. lf accumulatedcarbon deposits are observed around it, removedeposits and do not damage the sealing surface.The seal ring must be renewed at every overhaul.

rtH". )r-fi> aItEJgAlt,fHH* I*t:&:(t

E6 L) t' nr{E H tH t,ffi*+ & L( L \,6 ffi H[: : L \ ( It +fi F f* ffi F"l tlffi l;l T O fr*WrE# F"l

Tt, t -e > H iF I= * Eo>t - rfi) z5r'f.i Et 6trAz5rb q,, TJ r \-> 2ffi,*l:& 6t- C >HF& (J'= >J ttyt 4 > ^- A tr Di> r' > =7, F'fr[.a. Ottfr,f, . +H q *[ O +E

trt+H<trez5ib tq tt a('.. F db a?frffi.)fiffifuL'zlr ffT(f:'*Ur.

. t- C > H F t : tEfF= t t=tt-fi > tttE h t5- l:ff u)WL\( </i'3 Ur . T I5- OEfry2r\->a2l1,tr&tL)tt

"

o tHfB lA,. hlfI E+ & IEJ tt I=r- C 2 a-7t+ E t U <El El, htu)z5r/;<# < E 6= Ltffi-EBt(<fntL\o

o ;6EJ r-C> t\ri>7tttffiatrA, F'fr|il;l ,\ati ziEEsFl'J fi t)Elit,6lHtt;6t'f Fllttr;,iltrf t=L) . lEcrtt=u)VriL\ttl=itHU(TEL\o (ne. t XPos 1 FIt)

3. 2- tl,FII A)r-rfi),fEffiffi H'lFtt lkt- C 2 a-t (t-C >HF ) 25.

ba{E*&l:& L)>- )vn"$ciFd tFtH e=-+>2H*.75rftE

=L)tH;ffi tr<s+fiF lF-lF75rff Et

6EIHgttT5rb u)*t "

Photo 1 0 lt T U>2' t \t i>2'>- )Vt)>2 Ertz> Lo -p-.u)t *lJ I :+E L r= - +> 0H*.hrft,Lu. iH+Fu(L\,6{ ffi(.f .

t;

Sealing section in

bearing housing

RHl 43-203AP-1.R0

Seal ring partTemp. ('C)

>-)vt)>?E$tEE ("c)

Engine stop without cooling

down

77t-r-U>r't*t'fitrju\Ee

Engine stop with cooling

down

77r-2-t)>2'A=tfrl-t=Lfre

t. I

In order to mitigate the coking phenomenon,idling operation before engine stop isrecommended for more than 15 minutes.(Ref. Fig 4)In case it is impossible to do idling, start a primingpump as soon as engine stopped and supplyLub. oil for more than 15 minutes.(Remark 1)

Remark 1

Such priming pump may automatically or alwaysbe operated during standstill according to theengine specification. For the detail, consult withengine builder

CautionIn case the engine is forced to stop emergency,the following measures must be done.o Coolingdown by Lub. oilariming pump should

be dori,e immediately.Before restarting of the engine, check the rotorcondition according to Chap . 1.2. (lnspection atevery 1200hours) In case abnormal condition of ,:

rotor is observed, carry out the cleaning andoverhaul inspection of the turbocharger. .

I

F

P.7 /7

Photo 1 1 , 12 l*iHlBL/: t'ATf "

= fl3 l=h-zfi> 75rrftffi L( L \,6 tre H2 - tv

Ftl t =lE+t{-f lf t u \ & a, -rl-i > AHyu) ffi u t(</i'31\ o iAi ..

+frt(<E*L\oti

"=-*>7'E*tf[t, If 6ir-d>. #f H,FtHtl: 15 llFel ULA74F''J>Z'tr.$/itffiFttt "

(Fig.+ #.ffi)7 4l':''J >2'E.+6z5rTEI fr?i.a.trfr l*- >i>tr Jt'&E-tt I=J - 4

=> 2' fr>J t -rr-t:t I f .

15 flF"l l;tl iEfiAffil=irfd tFtH tl*ftAt(TtL\o (;tEts1)

itFe 1

ffi H {Ft F I =7 - 4

=> r)' #>J hrH H rhgr

t f: lt H E+ {t EIUTT \,6 #ff ffi t, Jtt \ *f o)('E+ t < H.-> i > /-t Et^fiE-Efl T 8 L r

"

!-l-.-.it.,Bffi H z5r{EI+ b aE tr (*EE .€.{Frt t t=EA It,uF areE-aF.',ffiu(</:'31\oo ffi H RA'F rLlh.. iiEtlz5t I=J- 4 l>2' I=

e672 t-, -t ) > ? A+fiE U( (f:'8u t "

O ffi H EIfrESHfr I='_C) tr-' OE,+Efi ffi.o) Hfft( 1 .z*rH 1 2oo EtF"l EA Rffiame

,

=tEt(<fi'81\o EzSl-. E+6l=EHir

-Eil db b tr 6Lfr e I t nE fG' tffi,a F# fI tH +E & U'Hffie=fiEu(<f:'81\o

RHl 43-203AP-1.R0