Help Needed: Air Compressor Discharge hole thread broke.

[DayMack]

Hello, thanks in advance for reading and possibly helping me out!

I have an air compressor where the discharge connecting point thread is damaged. It can't be tapped due to about half of the threads being broken off. I have been reading around and I think I need to drill out the remaining threads and then replace the threads with some sort of kit?

Any help is much appreciated, thanks!!

 

[joe49]

Often with pipe thread you can tap the piece deeper. The thread is tapered and will cut new thread were it is missing, as you tap it. If you are not familiar with tapping, study up or ask for someones help that is.

 

[DayMack]

Often with pipe thread you can tap the piece deeper. The thread is tapered and will cut new thread were it is missing, as you tap it. If you are not familiar with tapping, study up or ask for someones help that is.

Can't really go deeper as the mounting point is limited since it is on the air compressor itself, with half the threads completely missing

 

[Walkers]

Need to see a picture. I think you may simply have a broken off ****** that needs to be removed and replaced.

 

[DayMack]

Need to see a picture. I think you may simply have a broken off ****** that needs to be removed and replaced.

The mounting point ON the air compressor for the discharge pipe has half the threads missing. I can get a photo soon.

 

[Walkers]

The mounting point ON the air compressor for the discharge pipe has half the threads missing. I can get a photo soon.

Usually the outlets on the tank are welded on female pipe threaded bungs that have pipe ******* screwed on.

 

[The Cobbler]

we need picture(s) . sounds like you broke the casting on the compressor pump itself?

 

[joe49]

Often with pipe thread you can tap the piece deeper. The thread is tapered and will cut new thread were it is missing, as you tap it. If you are not familiar with tapping, study up or ask for someones help that is.

Can't really go deeper as the mounting point is limited since it is on the air compressor itself, with half the threads completely missing

You are not getting it. Get a tap the size you have and tap the hole till you have full threads again. Just do that and you will get how this works.

 

[The Cobbler]

You are not getting it. Get a tap the size you have and tap the hole till you have full threads again. Just do that and you will get how this works.

I can think of various situations where you couldn't do as you're suggesting .

hopefully the OP provides pictures

 

[joe49]

Keeping in mind his original post and sticking to that, would you care to name those various situations were you couldn't do it. Pipe threads are on a taper and can easily be tapped deeper to restore threads.

 

[The Cobbler]

mainly there may not be enough depth to get more threads , like if the side of a casting is broken out which is what it sounds like to me
hey, not arguing, lets see what his pictures show

 

[joe49]

Answer to your thought is tap till bottomed then shorten the tap and tap more. As a example a tap for 1/2'' pipe is $10 that makes it a cheap consumable. Edit; agreed pictures will be helpful.

 

[joe_padavano]

It's impossible to provide a useful answer without a photo of the problem. We're all just speculating and unfortunately the OP's description isn't particularly helpful.

 

[DayMack]

Here are the pics.

• I can go a little deaper but, we are trying to use the same screw and those top threads are where it grabs the most

If I tap without threads there, wouldn't that section need to be a bigger size? And if so, I would need a bigger screw, right?

I think I may just get a time sert kit

Let me know what you guys think, thanks!

 

[JRC3]

Air Conditioner compressor...And you guys were arguing pipe threads. LOL

If it were me I'd try a longer bolt just long enough not to bottom out, but first maybe try to chase the transition from the damaged to good threads with a tap. Or, would a Helicoil work? Never used them.

 

[Sumboodie]

That's an air compressor? Looks like an a/c pump to me.

 

[DayMack]

Air Conditioner compressor...And you guys were arguing pipe threads. LOL

If it were me I'd try a longer bolt just long enough not to bottom out, but first maybe try to chase the transition from the damaged to good threads with a tap. Or, would a Helicoil work? Never used them.

I didn't even notice that I didn't specify that. And I was getting confused lol. But I've seen that a time sert works better than a helicoil.

They want me to keep the same screw

 

[DayMack]

That's an air compressor? Looks like an a/c pump to me.

I work at a company that calls it air compressor all around me, yes AC Compressor/Pump whichever

 

[bcschief]

Go to the junk yard and get the rear housing off one there.

 

[Wrench97]

Try using a longer bolt with a nut threaded all the way up, thread the bolt in until it bottoms out then tighten up the nut to clamp the line in place.

 

[JRC3]

Try using a longer bolt with a nut threaded all the way up, thread the bolt in until it bottoms out then tighten up the nut to clamp the line in place.

Shiet, now that you say that, I'm thinking a stud or some threaded rod.

 

[JRC3]

Go to the junk yard and get the rear housing off one there.

Well, seems like there is already an old one it's replacing...But, there's a gasket/seal and oil to worry about. And contaminants and whatnot.

 

[larry_g]

Shiet, now that you say that, I'm thinking a stud or some threaded rod.

That would be my solution also. Find a stud that will fit and thread it all the way in, Then use a nut on top of the fitting.

lg
no neat sig line

 

[joe_padavano]

Here are the pics.

• I can go a little deaper but, we are trying to use the same screw and those top threads are where it grabs the most

If I tap without threads there, wouldn't that section need to be a bigger size? And if so, I would need a bigger screw, right?

I think I may just get a time sert kit

Let me know what you guys think, thanks!

And THIS is why you needed to post photos. Just get a helicoil. Done.

 

[joe49]

Air Conditioner compressor...And you guys were arguing pipe threads. LOL

If it were me I'd try a longer bolt just long enough not to bottom out, but first maybe try to chase the transition from the damaged to good threads with a tap. Or, would a Helicoil work? Never used them.

He did say, ''air compressor'' in the first post. Most of which have pipe thread.

 

[JRC3]

Still arguing. LOLOL I just sat back and watched figuring there wasn't near enough info to start providing and especially arguing an absolute solution. My original thought was that it was something like a little 1-3 gallon air compressor with an odd proprietary connection or something out of the norm. Then to see it was an A/C compressor. ahaha




Not making fun of you, DayMack, just razzing typical TGJF stuff. ha!

 

[Jim greengo]

Here are the pics.

• I can go a little deaper but, we are trying to use the same screw and those top threads are where it grabs the most

If I tap without threads there, wouldn't that section need to be a bigger size? And if so, I would need a bigger screw, right?

I think I may just get a time sert kit

Let me know what you guys think, thanks!

Not the kind of compressor I was expecting. Hahaha
That's why pictures are so important.
Anyway maybe try a time-sert.

 

[texasfiremedic]

Helicoil.