XJR (X308) V8-4.0L SC (AJ26) (1998)
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2. Install the VVT unit to the engine.
Assemble the VVT unit, the exhaust camshaft sprocket and the secondary chain, in preparation for installing to the engine.
Install the above assembly to the camshafts with the chain correctly positioned over the tensioner; VVT unit to the inlet and the sprocket to the
exhaust.
Install, but do not tighten, each bolt, which secures the VVT unit and the exhaust sprocket to the camshafts. Allow the VVT unit sufficient space to
install the primary chain, in a later operation.
3. Install the chain tensioning tool 303-532 to the exhaust camshaft sprocket.
Reposition the sprocket (and the VVT unit) for the most advantageous position for use of the tool. Remove the tool.
4. Install the primary timing chain.
Lift the primary chain and position it over the VVT unit sprocket (the VVT unit must be pulled forward to clear the cylinder head casting). There
must be no slack on the drive side of the primary chain and the VVT unit must not be rotated on the camshaft.
Slide the VVT unit fully on to the camshaft.
