1. Position crankshaft so that No. 1 piston is set at TDC on compression stroke.
2. Install crankshaft sprocket on crankshaft.
Make sure that mating marks on crankshaft sprocket face front of engine.
3. Install lower chain guide on dowel pin, with front mark on the guide facing upside.
4. Press and shrink the secondary chain tensioner sleeve, and fix it using stopper pins.
Lubricate threads and seat surfaces of camshaft sprocket bolts with new engine oil
5. Install secondary timing chain and sprocket to one of the banks (Right bank shown in the figure) as described below.
a. Align mating marks (golden links) on secondary timing chain with those (punched marks) on the intake and exhaust sprockets.
b. Align camshaft knock pins with the sprocket groove and hole.
Because camshaft sprocket mounting bolts are tightened in step 7, perform manual tightening to the extent necessary to keep camshaft
knock pin from dislocating.
Matching marks of the intake sprocket are on the back side of the secondary sprockets. There are two types of the marks; round and oval
types, which should be used for right and left banks respectively.
Right bank: Round
Left bank: Oval
It may be difficult to visually check the dislocation of mating marks during and after installation. To make the matching easier, make a
mating mark on the sprocket teeth in advance using paint.