Rookie move but some time ago I broke the red insert at the manifold not knowing how it locked in. Ordered the whole assembly but will just be using the black plastic collar and new red plastic locking piece.


Sooo what is the correct method to lock and release the red piece so I don't break it again?

 

 

Also baffled as to why the end of the black part on the right is closed on the end?

 

and finally.... how to remove the red ring from the new piece without breaking it and putting it in the existing unit in the truck... trying to only replace the red ring

 

I don't think you can remove just the red piece, at least not without breaking it. I would use a lag bolt that is a bit bigger than the ID, thread it in and then pry the old one out of the manifold. I have not done this on my rover though so others here may have a better method.

I bet the insert plug is used only to tap the new one into the manifold without damaging the red piece, then you throw it away. That's why there is no thru hole.

 

The Plug black piece = Used on P38 RR's that don't use a brake booster. The red piece can carefully be lifted out with say a small pick, then inserted into the other unit. It's a Push/Pull design meaning to normally remove it you push in on the red piece and pull out the black hard line going to the booster. It will giggle slighly, but if the hose is fully inserted it will not leak.

 

Thanks guys that's what I needed. Has anyone successfully removed the whole piece without removing the manifold?

 

Ben, there's really no need to remove the part from the intake. Just insert the red ring, then the brake servo vacuum pipe and be done with it.

I wish I'd known you needed the red ring; I've picked up a couple extras from boneyard trucks.

I had the same problem ten years ago when I first started working on my truck. The push in (the red ring), pull out (the vac pipe) is counterintuitive. I temporarily solved the problem with a silicone grommet I cut to fit. Remember, vacuum is pulling the pipe into the intake, not pushing it out. Maybe I'll recreate what I did and post pics.

 

Probably remove the throttle body and push it all the way through. You could put a rod through the center to make sure it does not drop in to the intake, pound it through with a socket. I am not sure if the bore is all the way through or not but you should be able to check with a flashlight after removing the throttlebody. Might have to remove the plastic flange on the outside end. Those metal crab clawas are not going to want to be pulled out the other direction.

 

Appreciate the offer on the red ring.. thankfully I got the whole part from overseas for 12 bucks... Now to carefully take the new ring out of the new part and put it in my truck