Question about Air Tools & Compressors

1 Answer

Craftsman compressor will not come up to pressure

I have a 6hp 30 gallon oiless compressor model 919 165140.The ring broke and scored the cylinder. I replaced the rod,ring, cylinder,and gaskets. Now I can only get 70 psi? It will continue to run but not get over 70 psi?

Posted by on

  • demaio Apr 22, 2009

    I found the middle reed valve was broken. Missing about 1/8", so I will buy the valve plate assembly and go from there. Thanks

  • Anonymous Apr 29, 2009

    i have a craftsman 7hp compressor, my problem is it will build up to 130 and not all the way up to 175... The real problem is that the compressor will not run my tools; the motor runs while running but i have to stop for it to build up pressure and even at that it takes forever to build up... This compressor should run all my air tools but it will not keep up, the pressure just keeps falling... I replaced the pressure regulator, that wasn't it.... If you can please help..
    Thanks

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,388 Answers

Don"t worry, even the best techs overlook a thing or two during repairs. Lets go over some basics to determine where fault is located. You will need to do some simple tests. If there are leaks the compressor may not reach set pressure. I use soapy water on all connections and on the head/headvalve while compressor is running. Make repairs as necessary. If still low pressure, while compressor is running and has reached max obtainable pressure (still low 70 - 80 lbs), carefully place finger over intake port hole (remove filter). If the compressor is pumping normally but leaking there will be ample suction at intake and cause the compressor to speed-up when intake is obstructed with finger. If you feel plenty of suction and no visible (soapy water) leaks, then the problem is probably the cylinder /ring is not correctly seating and air is leaking past cylinder. Make sure that the cylinder /piston ring is properly alighed and that the lip on the vinyl ring is up toward the head. If you do not feel suction but rather air seeming blowing out of the intake, then the problem is the headvalve plate/reed valves are leaking. The reeds must seal perfectly on their seats and not bent or have obstruction. Replace as necessary. Only one other thing to check and that is the intank check valve. Easy to check. Run compressor till you have about 70 lbs in the tank then unplug compressor. Carefully loosen the inlet hose at checkvalve and listen for air leaking out of tank. If leaking replace checkvalve. Use caution when removing head to try and save the gaskets. Good luck on your repair and email if you have other question.

Posted on Apr 22, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Compressor motor runs but does not make compessed air


Some of the things for you to check are for any leaks anywhere, the valve plate assembly, the piston and cylinder assembly and the con-rod. If you have any leaks that let air out as fast as the piston is trying to pump it in you won't get any compressed air. Check the drain valve on the bottom of the tank and the air line from the pump to the tank. If any of the reeds on the valve plate assembly are bent or broken they won't seal the way they need to in order to compress air. If the cylinder is badly scored or the piston rings are scored or broken the piston won't pump compressed air into the tank. If the con-rod is broke the piston won't work at all.

Jul 25, 2012 | Makita Mac5200 138a 3 Hp 5 Gal Wheeled Air...

1 Answer

Craftsman Air Comp. 6 hp oil-less, 33 gal horz. tank - sounds really loud


Sources of noise from craftsman oil free compressors (could be Made by Campbell Hausfeld or Porter Cable) include loose fan, failing bearing/s on the piston rod and housing, failing seal ring on piston, air filter intake and loose motor mounts. With the housing cover off, check the fan blade for cracks or loose screw. Turn motor by hand till the piston is at top of stroke. Examine the cylinder for scratches close to top. If scratched, air is leaking past vinyl ring making noise and causing longer fill time. If everything looks ok, suspect noise coming from bearings. Hard to tell if bearings are failing by looking at them. I have seen many failures of the piston bearing on the crank (fairly easy to change, I use alternator bearing from auto parts ) , however, the bearing in the housing just behind the crank bearing is much harder to replacable. Good luck with your fix-it project.

Jun 11, 2012 | Craftsman Air Tools & Compressors

1 Answer

I am replacing the cylinder sleeve and compression ring on my Craftsman air compressor model 919165020. Searspartsdirect says that I need two compression rings. Is this right? My compressor only had one...


http://www.searspartsdirect.com/partsdirect/part-model/Craftsman-Parts/Air-compressor-Parts/Model-919165020/0247/0703000 This is the exploded view that I used.

67 head 65 gasket 64 reed valve plate 63 ring,this one goes under the reed valve plate 62 screw that goes thru the 61 piston 60is a ring that sets on the top of the connecting rod screw the piston with the ring into the top of the connecting rod then take the connecting rod end cap off and cover the studs with some rubber tubing.This will protect the crankshaft when you push connecting rod and piston assembly in to the sleeve that is seated in the block.The ring should be flexible enough to push into the sleeve,if not a bit of oil should help.Guide the connecting rod on to the the crank shaft.I hope this helps and thank you for using FixYa.com

Owner's Manual - CRAFTSMAN Air compressor 919165020, 919165050, 919165090, 919165230, 919167330, 919165221, 919165070, 919165310, 919164200, 919165060, 919165300, 919152922, 919165250, 919186430, 919155613, 919164150, 919165030, 919165130, 919165500, MG2-OILFREE, 919165110, 919167200, 919165000 - ManageMyLife.com

May 14, 2011 | Craftsman Air Tools & Compressors

1 Answer

Need a rod for an oil run porter cable air compressor model c3151


Ok, the post shows 2 model numbers, so I will provide links for both. Be sure to only pay attention to the model number you actually have.

For a model C3151, an oilless compressor, the only way to get the connecting rod is by buying a piston kit, there is no individual replacement. KK-4835 is the part number and it runs about 50.00.
It can be purchased here.
http://www.ereplacementparts.com/piston-cylinder-and-ring-replacement-kit-p-58708.html


Now if you have a C3551, an oiled compressor, the entire Eccentric Rod Assembly will have to be replaced. The part number is Z-D22207 and it runs about 100.00.
It can be purchased here.
http://www.ereplacementparts.com/assembly-conrod-eccentri-p-62701.html

I hope this helps.

Dec 04, 2010 | Porter Cable 4 5 Gallons 150PSI Job Boss...

1 Answer

Bought new porter cable oiless boss compressor and want to know what i need to do before operatining it for intial use


The first thing is to make sure the compressor pump has oil!

Run the unit with the tank drain open for 10 minutes to break the compressor and rings in. Let the motor cool for 30 minutes and then use the compressor as normal.
Make sure to change the oil every 50 hours of use

Sep 26, 2010 | Porter Cable 4 5 Gallons 150PSI Job Boss...

1 Answer

No air output, but motor runs.


check your popoff valve first. it is the valve with the ring hanging on it. You will hear the air rushing.

If you don't hear any air rushing, you may have fried the piston rings or broke/chipped the piston(not your fault)..especially with oiless compressors

Jul 06, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

2 Answers

Pressure won't build up in tank


Your compressor is the oilless type that incorporates a vinyl/teflon piston ring and a cylinder that is open from the bottom. Remove the cover and push the piston to upmost position. Look for scratches along the upper portion of cylinder. If scratched, compression is leaking thru ring and will not fill tank. Replace with Sears part #k0650 cylinder /piston ring kit to restore full power. While the compressor is apart examing the valve plate and reed valves for wear. If worn replace with part #z-ac-0032. Reed valves tend to crack or loose their shape reducing efficiency. If cylinder and ring are in fair condition, then most likely reed/valve plate is the problem. Good luck and email if you have more questions.

Feb 01, 2009 | Porter Cable 4 5 Gallons 150PSI Job Boss...

1 Answer

Air compressor head gasket diagram


Campbell hausfeld has all their manuals on line at www.chpower.com / you can enter the model # of the whole unit or just the # of the pump. Also you can enter just a partial number example wl650 for a list of models is that range. Use caution when installing gaskets for chpower oiless pumps. Some of their gaskets are very brittle. After installing parts, turn pump by hand to make sure all parts are in their proper place and that there is suction. Enjoy

Dec 02, 2008 | Campbell Hausfeld 26 - Gallon Air...

2 Answers

Broken connecting rod


i broke the rod in my air compressor and cant find a place to buy a new one it is a pro source

Nov 10, 2008 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

Not finding what you are looking for?
Air Tools & Compressors Logo

Related Topics:

760 people viewed this question

Ask a Question

Usually answered in minutes!

Top Air Tools & Compressors Experts

John Trevino

Level 3 Expert

1388 Answers

Joe Garcia
Joe Garcia

Level 2 Expert

205 Answers

Brad Brown

Level 3 Expert

16987 Answers

Are you an Air Tool and Compressor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...