Amanti V6-3.8L (2007)
5) Remove MLAs.
6) Measure the thickness of the removed tappet using a micrometer.
7) Calculate the thickness of a new tappet so that the valve clearance comes within the specified value.
Valve clearance (Engine coolant temperature: 20°C [68°F])
T : Thickness of removed tappet
A : Measured valve clearance
N : Thickness of new tappet
Intake : N = T + [A - 0.20 mm (0.0079 in.)]
Exhaust : N = T + [A - 0.30 mm (0.0118 in.)]
8) Select a new tappet with a thickness as close as possible to the calculated value.
NOTE:
Shims are available in 41 size increments of 0.015 mm (0.0006 in.) from 3.00 mm (0.118 in.) to 3.600 mm (0.1417 in.)
9) Place a new tappet on the cylinder head.
NOTE:
Apply engine oil at the selected tappet on the periphery and top surface.
10) Install the intake and exhaust camshaft.
11) Install the bearing caps.
12) Install the timing chain.
13) Turn the crankshaft two turns in the operating direction (clockwise) and realign crankshaft sprocket and camshaft sprocket timing marks (A).