V8 4.0L 2001 VVT Problem

Hello Folks,
I have a noisy VVT on left bank which has resisted attempts at flushing altho i have flushed 3 times changed filters removed sump and engine is as clean as a whistle. So looking at changing the VVT. Wondered if it would be possible to split the VVT in situ by removing the torx screws leaving the sprocket in place(photos). Reason for this is that i have another VVT unit but the sprocket is damaged. Rgds, Charlie.