WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Keep the crankshaft from turning and tighten the jackshaft sprocket bolt in two stages.
Stage 1: Tighten the bolt to 45 Nm (33 lb-ft).
Stage 2: Tighten the bolt an additional 90 degrees.