Disco 4 Crankshaft trigger ring

[captainjsw]

Hi,
I have a Discovery 4 with the engine in bits (waiting on a replacement crankshaft) The manual says you need to replace the crankshaft position sensor trigger ring if its been removed, which it has. Anyone know why this is the case, it looks fine to me. I know you need to use a special tool to fit it which I have yet to source. Thoughts?151077
Cheers John

[justinc]

Likely due to the interference fit. After it is pressed off it loses its bore size. If you were to reuse it, it may not stay put.

[loanrangie]

Likely due to the interference fit. After it is pressed off it loses its bore size. If you were to reuse it, it may not stay put.

And nobody wants a loose ring [bigrolf].