MV50 Compressor Repair

[CLynn85]

It seems I'm not the only one who's had this problem, but after almost 5 years of faithful (and surprising) service, my MV50 finally started giving me issues. It wasn't that the compressor was failing, or the motor, but the crap fittings for the air hose were leaking and the little guy couldn't keep up.

I pulled the old one out, and found that it was no where close to the standard 1/4NPT air fittings. I thought about tapping it out but I didn't feel like buying a pipe tap and didn't want to disassemble the head (can't chip that beautiful red paint!). I did notice how close the size and thread pitch was though to a 1/8NPT. So I went over to the plumbing section and bought what I needed to use standard 1/4NPT quick disconnects.

The useless awful crap that came on it.



The nipple to adapt to the stock threads.



Reducer.



Barbed fitting for the hose side, just cut off the stock fitting and hose clamped it on.



The results.





The result is not as slick or packable, but with the release on the compressor side it's a bit more standardized. The whole thing cost about $8 (cheaper than a $55 replacement) and will keep me going for a while until I buy something built in the USA, if I can find one, because I'm tired of everything I buy coming from the people's republic.

 

[justinhw]

Great idea! Thanks for sharing =)

 

[PV Hiker]

I would swap and put the male connect on the compressor to avoid rapid head pressure if the unit is turned on.

 

[troyboy162]

nice work!

sorry to piggyback on your tread title but ive got a fitting question. Anyone know where to source the metal needed to make a new flutter valve for the head?

 

[K2ZJ]

You could also put a swivel on the end so it doesn't stick out so far.

 

[Bigfoot1963]

Some just use a blade off a feeler gauge. Hope this helps...........

nice work!

sorry to piggyback on your tread title but ive got a fitting question. Anyone know where to source the metal needed to make a new flutter valve for the head?

 

[Bigfoot1963]

I just removed the guts out of the female end so the hose would be standardized with the rest of my air hoses.

I would swap and put the male connect on the compressor to avoid rapid head pressure if the unit is turned on.

 

[JamesDowning]

What thread adapter did you use? When I redid my unit I found the stock threads were M12x1mm, which I couldn't find anything to hook up to.

 

[PV Hiker]

I just removed the guts out of the female end so the hose would be standardized with the rest of my air hoses.

That makes it way too easy and simple.....well done.

 

[CaliMobber]

I bought a 1/8 fitting from plumbing section and mine didnt match the threads.

 

[4RunAmok]

I simply drilled the head with the standard sized hole, and used a pipe thread tap of the same thread that standard fittings use (that I can't recall right now), and fitted in a standard fitting, no reducer or adapter.

 

[JamesDowning]

I bought a 1/8 fitting from plumbing section and mine didnt match the threads.

It must have something to do with how old the MV-50 is... my compressor (purchased in 2008) was metric thread, sounds like Q-industries changed to 1/8" NPT at some point?

 

[austintaco]

I ran into the same problem. I just found some barbed adapters and made a jumper piece to go from the fitting on the unit to a universal fitting. I didn't notice a change in performance either.