LR3 Air compressor Hitachi. Waiting on rebuild kit.

 

Can you find a manual with a parts breakdown for your Hitachi LR023964 compressor?
It looks like brass press-in (maybe screw-in?) pneumatic fittings. As bad as they look, you might have to drill them out or push them out from the inside.

 

There are not parts for that. This is why I recommend cutting the lines instead because they tend to "weld" in from the intense heat generated by the compressor. There was even a software update to make the compressor have a shorter cycle and reduce heat. Then just using a push-connects to re-couple them. There is no pressure in those lines, only when exhausting and its not much.

So you can drill and re-tap with a ****** fitting or such but there is so little metal to work with and its a very soft aluminum. Also if you remove the larger 10mm one, which is VERY difficult to do, you may find it will not thread back on. So far two compressors I have worked on seemed to have really messed up threads from the factory. Like they used the wrong fitting. And once removed they would not thread back on securely. JB Weld was needed.

You best bet is to find a very cheap used unit, even if its not working, and swap over the needed parts.

 

A shop that sells pneumatic hose and fittings should be able to supply them.

 

Have you searched to see if there is an upgraded air pump unit for the LR3/Discovery 3?

 

not worth it really....you can find hitachi style compressors on Amazon for $186 and have them to you tomorrow. I purchased one - and compared to the OEM removed, it's literally identical.

If you're going down that road, I'd probably try to tap the hole, and screw in a fitting. Google "6mm pneumatic compression" - you'll see what I mean.

And yes - I cut all my lines and spliced them with push fittings

 

6mm is not the correct size, the intake and exhaust fittings are 8mm and 10mm. The system lines are 6mm and if using compression fitting on that side make sure they are rated for at least 300psi since the system operates at about 250 but can exceed that.