Remove camshaft covrs
Remove front cover
Remove or fully retract all three timing chain tensioners
Remove oil pump
Primary and secondary chain guides should remain in place. Rotate crankshaft until sprocket drive key is at about 1 o'clock position.
Set crankshaft and intermediate shaft sprockets into primary drive chain with their timing marks asjacent to each other.
Install crankshaft and intermediate sprockets over their respective shafts. Rotating crankshaft as necessary to engage crankshaft key in sprocket without changing the timing mark relationship.
Install Flywheel Holder Tool (J-39411) to lock crankshaft in position. Install intermediate shaft sprocket retaining bolt and torque to specifications.
Route secondary chain for left cylinder head over inner row of intermediate shaft teeth.
Route secondary drive chain over chain guide, and install exhaust cam sprocket to chain so camshaft drive pin engages the sprocket notch marked "LE" (Left Exhaust).
There dhould be no slack in the lower section of the chain, and the camshaft drive pin must be perpendicular (90 degrees) to the cylinder head surface.
Install the intake camshaft sprocket into the chain so the sprocket notch marked "LI" (Left Intake) engages camshaft drive pin, while drive pin remains perpendicular to the head face. Minor adjustments can be made to camshaft position to get pin to engage by using a wrench on the hex cast into the camshaft.
Install sprocket retainer bolts and torque to specification.
Repet steps as above to install the right secondary chain to the right camshafts. The right camshaft sprockets are marked "RE" and "RI". In addition, the RE sprocket must contain the camshaft position sensor pickup.
SOURCE: the torque specs for a 1999 4.6 liter northstar
Hello: The following is straight from the 1999 4.6 service manual----Install the bearing caps according to the identification marks. The arrow should point toward the front of the engine. the number indicates the position from the front of the engine and the I or E indicates intake or exhaust camshaft. hand start all bolts. Tighten to 44 lb. in. plus 30 degrees Start from front and work back. A torque angle meter is used to measure degrees.
SOURCE: SETTING TIMING ON 2000 NORTHSTAR ENGINE
Setting the camshaft timing isnecessary whenever the camshaft drive system has been disturbed,meaning the relationship between any chain and sprocket has been lost.Correct timing exists when the crankshaft and intermediate shaftsprocket timing marks are in alignment and all 4 camshaft drive pinsare perpendicular (90 degrees) to the cylinder head surface.
degrees) to the cylinder head surface.
I hope this helps, if not let me know
I hope this helps, if not let me know
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