REPAIB INSTRUCTIONS, PART 2 VALVE STEM HEIGHT MEASUREMENT PROCEDURE
I213 FBI On enginés exhlbllng poor péforman€, smok€ (ar i¡mes) and a noriceabre enq¡¡e m¡ss (wirh rhe
symproms gefling worce as rhe engine gers honet, may be an indicalion ot valve seal €cássion. A d€.É6é in ¿r¿ádñcó (Élv6 lásh) b6iw6en the valÉ rocke¡ and válve yoke (bridge) can be measured al lhe valves 10 delermine ii seal e@ssioñ is occufinq. ll vdre sáal fece$ion is suspscr6d, lh6 following p@edúfe cañ be úsed 10 ñeasue valve slem heighl, fo peíorm lhis measuremenl. a val€ slém hélghl measu€me¡l sauss (lool No. 35112461) ánd a depth ñicómeler are requúed.
NOTE For deta¡led inlorñation on rccker am sh¡ft r€movál and installalion procodures, reler to lhe appl¡cable sclion ot lhis service mañual. I
. Femo@ conporénls as necessary 10 gain á@es to lhe cy inder héad (€lw) creL
2. Remove the cylinder head cover and r@ker
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On énak6 équipped wjk an enq¡ne bek, use su¡¡able ¡ie s¡Eps ü ñehaniB w¡e lo eták Lhe pi.tús in the t@ket fhe ñatch betweeñ tke p¡store and rccket ams nust be nakta¡ned, Fe¡lure L. s@ute the úgine bñke p¡stús befo6
3. Femore lheulre yokes {bridses).
NOfE The valve yokes musi be installed on the same sel of válws thal lh€y wa€ removed lrcm. Beio@ femoving lhe valve yokes, mafk lhem lo id€nlify lhek l@alion and or¡enlaüon, A¡ in@fecily hstalled válve yok€ caus¿s sdéc e¡glne damaqe due lo a dropped valve. For propér valvé yok€ removál and inslalLalion, fetef lo lhe appbpriaie *ctioñs in lhs séruic¿ ma¡ual.
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rcmv¡ng thé teker 6halt as@nbly, allows the pist@s to drcp fton Ihe búe of the ocket atns, lf a p¡stan drcps au¡, ¡¡ ñigt¡t not be tut¡@d. at n nay be dit'ficulf ta p6h ¡he pjston fu¡|y back ¡nto the borc al ¡he rcclér am. Also, pislons are a nalú-l¡¡ lo lhe bciet am, and só ¡nadve ent nk-Lp of úatpúúts nust be avoided. A*end¡¡ig tha @cket an shalt to lhe eng¡ne, or apeat¡hg an úq¡he w¡th tÉ Bng¡ne Úaké pjs¡ús ñot fully et@¡ed (ot ñ¡ss¡ns), rcsLlE ¡n btakage al vahe tñ¡n @nponents and siq"iliBnt engine danage. I 2. hbr brF b'c
