Volvo Penta TAD1630G Workshop Manual page 62

Service procedures - engine
4
Remove the Plug from the flywheel casing. Fit cranking
tool 999 3590.
5
Put a steel ball in the bottom of no. 1 tappet.
6
Fit tip 999 6390 to the dial indicator.
7
Attach the dial indicator to a magnetic stand.
60
8
Put the magnetic stand on the front cylinder head. Start
check-measuring at no. 1 valve tappet. Make sure that 999
6390 is on top of the steel ball.
9
Crank the engine until 999 6390 is at its bottom position.
Make sure that the tip of the dial indicator is pre-loaded. Set
the dial indicator to zero.
Group 21