1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 489Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 489

CAMSHAFT MEASURING LOBE LIFT aT E: rocedure similar to cI.ecking alve im ingIf improper ualve operation is indicated, measure
in specifications, move dial indi ca tor se mbl y8Insta ll and dj ust valve mech an ism as outli ned F ig ure Removing and
Replacing Cam shaft WITH IMI NG GEAR aRe mov ca mshaft plate screwsthrough hoi in ca ms haft ge r)bRemove cam ha ft and gear
as an (Figure 5) Figure 3Measuring Cam shaft Lobe lift REMOVAL 1Re mo va lv lifters as outlin ed2Re move crank ase front
cove as out lin ed3Rem ov fu el pum push rod by re rn ing fuel pump Complete camshaft removal as follows: WITH TIMING CHAIN
a Remove camshaft procke bolt then remove mshaft procket an timin chain procket is light press fit on camshaftTo dislodge,
ta,p lightly on lower edg of camshaft spro ket with pia ie hammerbIn sta ll two 5 16-18 bo lts in camshaft prock bolt holes