The camshaft alignment requires a special tool that fits into the back of the camshafts as shown in the picture below. The crankshaft needs to be aligned before the pulley is removed. If the belt is not off yet you can mark the camshaft and the cylinder head so you can see where it is supposed to be or you can make a tool out of a flat piece of metal, but if the camshaft is off on the timing marks engine damage could occur. If you would like I can send you the removal and installation procedure.
REMOVAL & INSTALLATION
See Figures 1 through 10
Fig. 1: If you plan on reusing the timing belt, make sure you note the direction of the rotation before removal
Fig. 2: If the special tool is unavailable, a suitable length and width straight edge can be used to align the camshafts
Fig. 3: Camshaft alignment using the special service tool
Fig. 4: Insert the crankshaft damper bolt to turn the crankshaft and ...
Fig. 5: ... align the camshafts and the ...
Fig. 6: ... crankshaft before removing the old belt
Fig. 7: Loosen the timing belt tensioner pulley bolt, slide the tensioner back and ...
Fig. 8: ... tighten the bolt to the farthest right hand side as possible to hold the release the tensioner pulley so that the belt can be removed
Fig. 9: ... remove the belt starting from around the camshaft pulleys
Fig. 10: Installation of the tensioner spring and retaining bolt
For information on timing belt recommended replacement interval.
Disconnect the negative battery cable.
Remove the timing belt covers as outlined in this Section.
Remove the valve cover.
Place Camshaft Alignment Timing Tool T94P-6256-CH or equivalent, into the slots of both camshafts at the rear of the cylinder head to lock the camshafts into position.
If the special tool is unavailable, a suitable length and width straight edge can be used to align the camshafts.
Loosen the camshaft timing belt tensioner pulley retaining bolt and move the tensioner pulley to relieve the tension on the timing belt.
Temporarily tighten the tensioner in this position.
If the timing belt is to be reused, mark the belt for the direction of rotation before removing to prevent premature wear or failure.
Remove the timing belt.
If required, remove the sprockets as follows:
Hold the camshaft with an appropriate camshaft sprocket holding tool.
Loosen and remove the camshaft sprocket retaining bolt.
Remove the sprocket from the camshaft.
Repeat the procedure for the 2nd camshaft sprocket.
Remove the crankshaft sprocket.
Slide the crankshaft sprocket onto the crankshaft aligning the key-way.
Align the camshafts using the Camshaft Alignment Timing Tool T94P-6256-CH.
Reinstall the sprockets onto the camshafts and loosely install the camshaft retaining bolts.
Tighten the camshaft sprocket retaining bolts to 47-53 ft. lbs. (64-72 Nm) .
Loosely install the crankshaft pulley to verify that the engine is at TDC. Realign the marks if they have moved.
Verify that the camshafts are aligned.
It is recommended to purchase a tensioner spring and retaining bolt through the dealer parts to apply the proper tension for used or new belt installations. The spring is bolted to the tensioner assembly and becomes a part of the engine. Ignore this notice if the tensioner spring is already installed.
Reinstall the retaining bolt (W700001-S309) into the hole provided in the cylinder block and place the tensioner spring (6L277) between the bolt and the camshaft timing belt tensioner pulley.
Tighten the retainer bolt to 71-97 inch lbs. (8-11 Nm) .
Remove the crankshaft pulley and install the timing belt onto the crankshaft sprocket, then onto the camshaft sprockets working in a counterclockwise direction.
Be sure that the span of the camshaft timing belt between the crankshaft sprocket and the exhaust camshaft sprocket is not loose.
Be sure that the camshaft timing belt is securely aligned on all sprockets.
Reinstall the lower timing belt cover and tighten the retaining bolts to 53-71 inch lbs. (6-8 Nm) .
Apply silicone sealer to the key-way of the crankshaft pulley and install. Tighten the retaining bolt to 81-89 ft. lbs. (110-120 Nm) .
Inspect the timing mark on the crankshaft pulley to verify that the engine is still at TDC.
Loosen the camshaft timing belt tensioner pulley retaining bolt and allow the tensioner spring attached to the pulley to draw the tensioner pulley against the camshaft timing belt.
Remove the camshaft alignment timing tool from the camshafts at the rear of the engine.
Turn the crankshaft two revolutions in a clockwise direction.
Tighten the camshaft timing belt tensioner pulley retaining bolt to 26-30 ft. lbs. (35-40 Nm) .
Recheck that the crankshaft timing mark is at TDC for the No. 1 piston, and that both camshafts are in alignment using the camshaft alignment timing tool.
A slight adjustment of the camshafts to allow the insertion of the camshaft alignment timing tool is permissible as long as the crankshaft stays at the TDC location.
An appropriate camshaft sprocket holding tool can be used to move the camshaft sprocket (s) if a slight adjustment is required.
If a camshaft is not properly aligned, perform the following procedure:
Loosen the retaining bolt securing the sprocket to the camshaft while holding the camshaft sprocket from turning with the sprocket holding tool.
Turn the camshaft until the camshaft alignment timing tool can be installed.
Verify that the crankshaft timing mark is at TDC for the No. 1 cylinder.
While holding the camshaft sprocket with the camshaft sprocket holding tool, tighten the retaining bolt to 47-53 ft. lbs. (64-72 Nm) .
Remove the tool and rotate the crankshaft two revolutions (clockwise) .
Verify that the camshafts are aligned and that the crankshaft is at TDC for the No. 1 cylinder.
Install the valve cover.
Install the timing belt covers.
Connect the negative battery cable.