I am replacing my high pressure fuel pumps and noticed this bolt hole at the top. I used the bolt from my old pumps but should I be using loctite on this or a torque spec? It seems to snug up on it’s own without much extra force and I don’t want to go too tight and damage the new pumps. At the same time I’m a bit apprehensive about the possibility of not tightening them down enough.
I think I put some liquid pipe thread sealant on it when I did mine (not sure if it’s necessary or not), and tightened it down good’en’tight. It’s never leaked on mine.
I didn’t use any liquid seal, I did use steel seal washer though. Torque spec was 10Nm IIRC.
Appreciate the replies. I ended up using a bit of Permatex 59214 High Temperature Thread Sealant and just snugging it down.