Mack Trucks MP8 — Mack MP8 Engine Service and Repair Manual PDF (EN)

REPAIR INSTBUCTIONS, PART 3 4. ll cleaЙnce is nol wlhin spйciccalion, adiusr lhe cleaEn@ as lollows, using shims lFigu@ 441) pla@d ос Iop ol lhe Йlve уокй Usins th6 dial indicator wilh бngЙl ereЎsЎon and b6й (9989876,. 851 I 1493 and 999s6s6), pЎасй the iip ollhe dia gauge on the ууkу 6 closй as possibls io lhй ro.ker afm yoke pad. Adjusl ng Exhaust Fockй. Arm CleaEnce a. Flemove lhe shim relaining screw aЎd @mow lЎe 6him(s). b, oerermine rhe Ihickness ol the shh(s) requircd ro p@ide lhe specitied c, ЎЎакй su@ thal lhe valw yoke and shic(s) бfe creac. Pracй thй shim(s) in posnЎon on the va !e yoke and inslall rhe eiaining sre. Tiqhrйn lhe scre lo spdilicalion.

NOTE DO NOT ъse mofe than hdo shlcs. shlms ай a€ilable in 0,05 сm (0.002 inch) inc@menls wllh lh6 lhicknss mбr*6d on th€ sulбc6. lf lwo shims ae requircd lo iake up the cleaЙ.@, the shlms should bй ol nea y йquallhicЎ Fisure 446 - Bhke R.cbr h adtBrcod Inh Diar lBAdusrinqscrew c. fghlen lhe tuckйr am adjusiinq scr4 B unlil lhe dial shows that the yoke has beon pushed d@nward lo S- d, Loosen lhe rockйr arm adjusling sre accordЎnq to sp6cilicalion. e Hold ihe adjusting scrs lo prevent il rrom lurnЎn! lurherand, using aloque wrench, 1Ўghlen the locknul to 5. Leave ihй lййler gauge iЎ pla@ belrveen the exhaust rockor am pislon and lhe Elre yoke shim and adjusl the bЎake rccker arm 6.

Femove thй dial indicator and the teeter Adjusling B€ke Bocker Ah clearбnce a. Loosen lhe iocknLn A on the bBke fooker arm adiusiihq srew Usinq a leeler Oaugй, checklhe clearance belwйen lhe brake rocker бrm rcller and the cam lobe. Ўllhe clйafance Ўs Ўncyrect, repeal the bako rockйr arm clearancй