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compressor won't build pressure
- Thread starter terryswan
- Start date
- Replies 4
- Views 2,453
N2IXK
Stainless
- Joined
- Nov 20, 2003
- Location
- Northern NJ
Assuming you can't see any obvious leaks in the piping, my first guess would be a cracked valve in the compressor head.
Timw
Stainless
- Joined
- Nov 8, 2005
- Location
- N E Florida
Have you changed the air filter lately? With the filter off feel and see if it is sucking air in, not just moving it in and right back out.
Could be a stuck valve, stuck/malfunctioning unloader system or pressure cutout switch. Could also be check valve between cylinder head and air tank.
Most of these problems are simple to fix. You need to troubleshoot the symptoms a little farther than won't pump more than 20psi.
Could be a stuck valve, stuck/malfunctioning unloader system or pressure cutout switch. Could also be check valve between cylinder head and air tank.
Most of these problems are simple to fix. You need to troubleshoot the symptoms a little farther than won't pump more than 20psi.
surplusjohn
Diamond
- Joined
- Apr 11, 2002
- Location
- Syracuse, NY USA
check the check valve first.
440roadrunner
Hot Rolled
- Joined
- Jun 4, 2006
- Location
- N Idaho
I don't understand why a check valve would cause this problem, unless it also is part of the unloader.
If you can't hear any obvious air leaks on shutdown, it's got to be a pump problem. Broken piston, bad valve. What's the chance that a belt or pulley is slipping?
If the thing is piped into a shop, isolate the piping.
If you can't hear any obvious air leaks on shutdown, it's got to be a pump problem. Broken piston, bad valve. What's the chance that a belt or pulley is slipping?
If the thing is piped into a shop, isolate the piping.
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