1999 Volvo Penta "WT" Models Workshop Manual, Page 277Get this manual
m 2Coat seal lips withUse tool oiiInstalltonew sealseal into engine with lip toward inside of coverJ-35468 drive positionTiming Chain Cover Removal 1Remove circulating pump pulley, alternator brace, and power steering pump2Drain cooling system and remove hose at circulating pumpDisconnect temperature sender wire, then remove circulating pump and discard gaskets3Remove oil panSee Oil Pan in this section4Remove the front cover-to-block attaching screwsRemove front cover and gasketTiming Chain and Sprocket Replacement
1Crank engine until "a" marks on camshaft and crankshaft sprockets are in alignmentIn this position, engine is timed to fire No.6 cylinder
2Remove camshaft sprocket boltsRemove sprocket and timing chain togetherSprocket is slight press-fit for approximately Va inchIf sprocket does not come off easily, light blow with plastic-faced hammer on the lower edge of the camshaft sprocket should dislodge it