broke my fuel pump

Audifan · #1 14th June 2020, 07:35 PM

I wasn't careful when I was tightening the nut for my new fuel pump and snapped off one of the terminal post

looks like I need to buy a new fuel pump

spannerrash · #2 14th June 2020, 08:21 PM

Maybe a stupid idea but if you're careful could you not try soldering the terminal to what remains of the stud? Your gonna scrap the pump now I guess so maybe worth a try.

paulrstaylor · #3 14th June 2020, 08:53 PM

or drill and tap it?

Audifan · #4 14th June 2020, 09:50 PM

Quote:

Originally Posted by spannerrash

Maybe a stupid idea but if you're careful could you not try soldering the terminal to what remains of the stud? Your gonna scrap the pump now I guess so maybe worth a try.

There isn't much left of the stud on the fuel pump. Is soldering even a good idea?

Quote:

Originally Posted by paulrstaylor

or drill and tap it?

It's possible but I have no idea how far I can safely drill down into the broken stud on the fuel pump side. Also finding a small enough replacement stud to screw into the newly drilled hole and have it tapped out to receive new stud.

MikkiJayne · #5 15th June 2020, 04:54 PM

Given where it is, the difficulty of replacing it, and the consequences of it failing, I would be inclined to just chalk that one down to experience and replace it.

The max torque for an M4 bolt is around 2Nm, or 17 inch-lbs so barely anything really.

Audifan · #6 15th June 2020, 05:32 PM

This is the nut for the negative post on the fuel pump and it looks like it has a nylon insert?

Here is my attempt at fixing my broken fuel pump stud. I was able to drill and tap the hole.

I was able to get stainless steel screw, washer and nut for the repair. Unfortunately I wasn't able to get the hole drilled completely straight

.

Got the head cut off and now I'm wonder if this is going to be a problem as this is not sitting straight and could cause a problem?

Quote:

Originally Posted by MikkiJayne

Given where it is, the difficulty of replacing it, and the consequences of it failing, I would be inclined to just chalk that one down to experience and replace it.

The max torque for an M4 bolt is around 2Nm, or 17 inch-lbs so barely anything really.

That's what I have been wondering if it's worth the trouble fixing it.

Yeah I know it doesn't need to be super tight for that nut. I guess I was super excited that I finally got everything I needed to start putting my new fuel pump back together and was in a hurry and over tighten that nut and it snapped