Size spanner for the auxiliary belt tensioner

[flyingging]

Spanner size please. Ridiculous spot to get at !

 

[Spaghetti]

For releasing the spring tension, it’s 16mm hex spanner. M12 spline for the bolt. 4mm pin to lock the spring.

Recall - belt tensioner

 

[flyingging]

Thanks. I meant the 13mm behind the aircon one. I found out online. Who designed that. What a b.... to get to. Thanks.