Mack Trucks MP8 — Mack MP8 User Manual

REPAIR INSTRUCTIONS, PART 3 3- lf lhб d@6nce is nol wilhin specllcalion, loosec llly locknul and adiusl the 6leaance EXHAT ST VALVE ATUUSTMЙNi (Wlnlouf POWERLEASHTЎ) 1. Al lhe curenl camshalt soiing u6ed lor the Ўnlet vбlws, adjut the exhalsl wcEs tolldЎnq thй sam€ pr@edu@ descrbed ror adjusrmed ol me irrйr varEs, H{)wef, rhe valv€ cl€aBnce specilicaion is difisrйnr. 4. Hold rhe adjuslicq s. lo pЎweni n r@m luhing and lЎghlen the lockcъl to 5.

Recheck lhe clearance aller tlqhtenlng th6 6, Mark lhe @ker arm when adjusiceЎn ls Th€ unil i.iйclor adiushйnl is donб wilh lhй enqine aЎd cahshaf Ўn the sace poshon 6 for lhe inlel valve adjshenl on each 6ylinder Lo6en lhe lnjeclor rccker arm adluslЎng scrйw iam nъ and lurn lhe adiusliЎg scrїw out (couniercrockwi@) lo felieve tbe pйroad. UNfT INJECTOF ATUUSTMENT 1, Turn the adjusrЎng sc€w h (crockwrse) uniir I I mly coniacls lhй injйcloi Do lol Tъrn lhe adjustЎnq scew ln a lъrther 240' (tour llals on lhe hq head).

0- Malk ье rccker arm whйn adjushenl is t slngьo llywhйeliuming iool, bar the engineovercбnuallylo lhйappoprЎale maБing tof nexl cvljndeL adiusl lhe iЎlet %lBq unЎl inieclor and qhбusi valv6 al @ Fiqufs 437 - adjudhq ъnh Ўntedor creЙnce Hold lhe adjusllng scre to prmnt il lrom iurning luarher and, using a torque wreЎch, nqhbc rh6 jam nll ro spsmcaioЎ. t'rark the r@ker arm when adjushenl is