Does anyone know what torque I should do the front upright mushroom adapter clamping bolt?

I just tightened mine as tight as I could using a ring spanner, you need to fit a locking screw for IVA.
Checking the Ford manual, it states 59-66 lb/ft

[Edited on 27-6-15 by 40inches]

I didn't know about the secondary fixing. You just saved me a failing point on my iva!!!!

For my locking screw I just drilled a small hole through the side of the hub and the mushroom to take an M5 dome headed bolt and nut. You can just see it on the attached photo (the head of the bolt is the shiny bit just below the mushroom). Its a bit fiddly getting the nut on as its on the inside though. The tester didn't give it a second glance.


Description

Aside from having to do it for IVA, its a complete waste of time IMHO. With the clamping force on the mushroom, there is no way that its going anywhere.

[Edited on 28/6/15 by SteveWallace]

I just drilled and tapped M6, through both parts, and used a M6 mushroom headed allen screw.

[Edited on 28-6-15 by 40inches]