Fiero V6-173 2.8L (1986)
Timing Chain: Service and Repair
Fig. 11 Valve timing marks
1.
Remove front cover as described under ``Engine Front Cover, Replace.''
2.
Place No. 1 piston at top dead center with marks on camshaft and crankshaft sprockets aligned, Fig. 11. The valve timing marks, Fig. 11, does
not indicate TDC compression stroke for No. 1 cylinder for use during distributor installation. When installing the distributor, rotate
engine until No. 1 cylinder is on compression stroke and the camshaft timing mark is 180 degrees from valve timing position shown in Fig.
11.
3.
Remove camshaft sprocket bolts, then remove sprocket and timing chain. If sprocket does not come off easily, tap lower edge of sprocket with a
plastic mallet.
4.
If crankshaft sprocket is to be replaced, remove sprocket using a suitable puller or tool J-5825. Install new sprocket, aligning key and keyway.
5.
Install timing chain on camshaft sprocket. Hold sprocket vertically with chain hanging down and align marks on camshaft and crankshaft
sprockets.
6.
Align dowel pin hole in sprocket with dowel pin on camshaft, then install sprocket on camshaft.
7.
Using camshaft sprocket attaching bolts, draw sprocket onto camshaft. Torque bolts to 15 to 20 ft. lbs.
8.
Lubricate timing chain with engine oil, then install front cover as outlined previously.