1999 Volvo Penta "WT" Models Workshop Manual, Page 283Get this manual
Measuring Camshaft Lobe Lift
1Remove rocker arm coversLoosen rocker arms and pivot
away from push rodsPosition indicator with ball socket adapter
(Tool J-8520) on push rodMake sure push rod is in the lifter
socket2Rotate the crankshaft slowly in the direction of rotation until the lifter is on the heel of the cam lobeAtthis point, the push rod will
be in its lowest position3Set dial indicator on zero, then rotate the crankshaft slowly, or attach an auxiliary starter switch and "bump" the engine over, until the push rod is fully raised position
Whenever the engine is cranked: ignition coil to
rn Remove gray starting of enginefrom and black connectors prevent accidental
cations, remove dial indicator assembly2
4Compare the total lift recorded from the dial indicator with specificationsIf camshaft readings for all lobes are within specifi5Install valve mechanism as outlinedInstall rocker arm covers
Rear Main Bearing Oil Seal Replacement