Important: Be sure to keep parts in order. Parts must be put back from where they were removed.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten
Tighten the valve rocker arm studs to 50 N·m (37 lb ft).
Important: The 8.1 L engine uses different length intake and exhaust valve push rods.
The exhaust valve push rods (2) are longer than the intake valve push rods (1).Tighten
Tighten the valve rocker arm nuts slowly, to 25 N·m (19 lb ft),
while guiding the tips of the rocker arms over the tips of the valves.