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DeWALT D55141 Type 1 Compressor dewalt logo

 DeWALT D55141 Type 1 Compressor Parts

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 Fig # Part # Img Part Name Availability Price Qty
2A15185
Tube Plug
Ships in 9 - 12 business days
 $3.26
3621451-00
Washer
Ships in 9 - 12 business days
 $0.99
4D24721
Kit-Isolator W/Screw (Contains 3 Each)
In stock
17 available
 $9.91
5SSF-927
Screw .250-20X1.125
In stock
20 available
 $2.16
6CAC-1254
Isolator Pump
In stock
16 available
 $2.16
7N087118SV
Pump and Motor Assembly
In stock
2 available
 $155.58
8CAC-1206-1
Hose Clamp
In stock
25+ available
 $2.16
9A16782
Hose
In stock
4 available
 $10.39
10D29135
Hose Clamp Obsolete - Not Available
Discontinued
$0.00N/A
11N016477
Manifold
In stock
1 available
 $13.56
12D27022
Check Valve
In stock
25+ available
 $18.57
13SSF-621
Screw .250-14X.625 F
In stock
3 available
 $2.29
14D20114
Valve Safety 175 .25
In stock
13 available
 $22.40
15A09602
Gauge 1.5 300 .125
In stock
2 available
 $10.39
16D28104
Screw .250-20X.500 P
In stock
5 available
 $2.14
Fig #Part #ImgPart NameAvailabilityPrice
17A16967
Cover
Ships in 9 - 12 business days
 $32.06
18Z-D23004
Gauge Can 200PSI 1/8
In stock
18 available
 $23.75
19A18351SV
Manifold Assembly
In stock
5 available
 $52.93
205130010-00
Nut
Ships in 9 - 12 business days
 $1.11
21N072023
Ball Valve
In stock
25+ available
 $6.64
22A17566
Label
Ships in 9 - 12 business days
 $4.35
23N000231
Label
Ships in 9 - 12 business days
 $3.44
24A16642
Warning Label
Ships in 9 - 12 business days
 $11.42
25A16644
Nameplate Obsolete - Not Available
Discontinued
 $0.00N/A
275130060-00
Decal
In stock
4 available
 $1.59
28A16643
Decal
Ships in 9 - 12 business days
 $5.34
29A16968
Tank
Ships in 9 - 12 business days
 $356.52
305130015-00
Coupler
In stock
1 available
 $19.92
312N003306SV
Pressure Switch
In stock
25+ available
 $15.66
325N036518
Con Rod Assy
In stock
25+ available
 $27.17
Fig #Part #ImgPart NameAvailabilityPrice

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Repair Stories
Symptom:
Worn Part
Parts Used:
Part Number:
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Entry Date:2013-10-18 16:10:02
2 of 6 customers found these instructions helpful
Check valve defective
Support the manifold with another wrench, remove valve, re-install.
Did these repair instructions help you?
Discussion
Discussion for the DeWALT D55141 Type 1 Compressor

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Sam3322
Question: Faulty Pressure Switch

Sam3322

My compressor is not shutting down. It will get up to about 170 psi, lift the safety and keep on running. I thought it was the pressure switch but I have had other opinions given to me. One being NO175925V valve plate. Why could it be this and how do you check this part to prove it faulty? The other being NO36518 connecting rod assembly, how do I troubleshoot this part? Lastly the pressure switch how can I test this and eliminate it? Any ideals or if you have had a lot of experience with these parts please let me go with it. I know most times there will be one part that causes 90% of all the problems. Anybody have any experience with that? Compressor comes on, runs good, lifts the safety at around 170psi continues to run. I think the tank is pressuring up because of the amount of time it takes the tank to de pressure after the safety lifts.
Tinkerdave
Reply: Faulty Pressure Switch

Tinkerdave

Hi Sam3322,
The D55141 has a approx cut in pressure of120 PSI and approx cut out pressure of 150 psi. The pressure release valve will blow at between 165-170 psi if I remember right. If your blowing the safety valve off a 170 psi then its a sign that the Pressure Switch
Part Number: N003306SV is defective or clogged.Before you replace it try this first. remove the switch then remove the hose from the switch.Take a paper clip and poke down the pressure switch port and clean any mud or rust that may have gotten down there and clogged the hole.This was a common problem on the d55141.A clogged intake pressure port on the switch was much more common then a defective switch.Hope this helps.Good luck.
Tinker
Sam3322
Reply: Faulty Pressure Switch

Sam3322

Thank you Tinker. I will do that tomorrow.
Sam
howdy folks, I have a little dewalt air compressor model d55141 type 1 serial 2768035197 that will not pump past 120 p.s.I. I ordered a new switch fot it part noo3306sv and it is rated for 150 cut out pressure. I was told that this is the correct switch for it, but it just can't get past 120.is there another switch rated at 120 p.s.i.that I can use?. thank you in advance for any help you may be able to give me. grasswhacker
Tinkerdave
Reply: Compressor Not Building Up Press...

Tinkerdave

Hi,
Are you saying that it won't pump up past 120 p.s.i. before it shuts off or that it will continually run but not pump past 120p.s.i?
grasswhacker
Reply: Compressor Not Building Up Press...

grasswhacker

howdy, I'm sorry for not making myself clear. the compressor will pump up to 120 p.s.I.just fine but cannot pump past that and will continually run. thank you grasswhacker.
Tinkerdave
Reply: Compressor Not Building Up Press...

Tinkerdave

Hi grasswhacker,
There could be a number of things causing the problem in that model.I'll give them in the order of the most common.
1.The compressor uses a teflon piston ring and this could be damaged.
2. Check the reed valves in the cylinder head and see if they are worn or damaged.
3. Check the red tube ring and see if it is damaged.This red ring is where the tube come out of the cylinder head.
These three things will give you a good place to start in troubleshooting the compressor.Hope that helps.Good luck.
Tinker
1152656
Question: DeWalt D55141

1152656

After initially starting my 4-5 year old Model D55141 with regulated pressure set for 100 psi, the tank pressure will build to 125 psi. When the compressor kicks on to remain at pressure it "buzzes" for a second or two and then stops without the compressor coming back on. It continues with this buzz on / stop cycle every 5 seconds or so. Meanwhile the regulated pressure starts to slowly fall and never resumes / builds back to the 100 psi setting. Any idea on what might be the problem and on a recommended repair?
loverboy43
Question: Leaking Air Gage

loverboy43

compressor output hampered by leak around face of 200psi air gage (liquid soak verification). Took the gage off but there doesn't appear to come apart. Is my diagnosis incorrect?
WJA
Reply: Leaking Air Gage

WJA

Hello loverboy43,

If I'm reading this correctly you want to replace a part on the 200 psi air gauge. The manufacture does not supplit replace parts for the air gauges. You will have to replace it with a new one.

-WJA
spavey
Question: Dewalt Compressor

spavey

model # 55141 will not shut off can this part be the problem
WJA
Reply: Dewalt Compressor

WJA

Hello spavey,

I think your pressure switch is okay. I would look more into either the N017592SV Valve Plate. Check for worn or damaged parts. Or it could be the N036518 Connecting rod assembly with the cylinder and rings. It could be worn to the point where air is blowing by and not getting into the tank.

Hope this helps,
-WJA
TerryB
Question: Regulator Adjustment Knob

TerryB

My adjustment knob isn't working properly and my compressor will not exceed 50 psi. I've replaced the air check valve and when I shut it off I no longer hear air escaping, but it still won't exceed 50psi. The knob doesn't seem to work right and when I remove the knob I find a spring inside that sets on a piece of plastic. I'm assumming the spring pushes down on the plastic as the knob is tightened allowing the pressure to be controlled. Do I need to replace the whole manifold or is there another fix for this?
Tinkerdave
Reply: Regulator Adjustment Knob

Tinkerdave

Hi TerryB,
Sounds like what you have is a frozen spool steam in the regulator.Look on the back of the regulator body and see if there is a nut that can be removed. If so remove it and carefully pull out the spool steam and nut.The spool steam should sit in a tube on the bottom of the nut with a small spring in between them. Gently pull the steam from the tube on the bottom of the nut and and you should see a o-ring.This steam with the help of the spring moves back and forth in the tube and regulates how many air psi is allowed to the working side of the regulator..If its frozen then it will not respond to the control knob.If it is frozen then clean it well and apply a little grease to the o-ring and spool reassemble it and place a little grease on the disc you took out with the big spring under it that should get you going.I don't know what compressor you have so i'm not sure of what regulator you have.Some regulators have no nut on the back so the spool comes out the front of the valve body.Hope this helps.Good luck.
Tinker
TerryB
Reply: Regulator Adjustment Knob

TerryB

I have a Dewalt d55141 Type 1 compressor. Is there a diagram that shows the assembly? I have no nut on the bottom but the knob itself unscrews. There's a large spring and a disc that has an O ring. Under that there's a smaller disc with a spring at the bottom. I'm not sure I'm reasembling it correctly. Does the disc with the O ring go in first and then the big spring or does the big spring go in first and the dis with the O ring sets on top of the spring?
Tinkerdave
Reply: Regulator Adjustment Knob

Tinkerdave

Hi Terry,
The big spring sits right below the regulator adjusting knob.So you would have your a pressure adjusting knob then the spring then the disk.Hope that helps.
Tinker
978115
Question: Homeowner

978115

I have a D55141 DeWalt compressor. It runs but will not build more than 35-40 lbs of pressure. It continually runs. What do I need to fix this problem?
Tinkerdave
Reply: Homeowner

Tinkerdave

Hi homeowner,
The D55141 compressor's pump and motor is a none serviceable unit.It would need to be replaced as a whole unit.Does the compressor pump up to certain level and stay there as the compressor runs or does the gauge just stay on zero and not pump up at all when running.If it pumps up to say 40 psi and sit there while it continually runs you might have a bad check valve Check Valve Part Number: D27022.To check this run the compressor and when it gets up to the maximum pressure that it will pump,shut it off and listen and see if you can hear air leaking out around the pump area.That check valve holds the high pressure in the tank while the pump is pumping air into the tank.If its not working then the tank will push air back into the compressor head until it equals the pump pressure.Hope that helps.Good luck.
Tinker
TerryB
Reply: Homeowner

TerryB

I got the air check valve and installed it but the compressor still won't exceed 50 PSI. If the regulator knob is defective could that cause the problem? If so do I need to replace the manifold unit or is there another solution?
Tinkerdave
Reply: Homeowner

Tinkerdave

Hi terryB,
The D55141 is a very light duty compressor.Being that it's an oil less compressor its duty cycle is rather low.It can't deal with thermal issues very well so if one happens to use the compressor on a job where the compressor has to run on a continual bases then there is a chance that the pump won't dissipate the heat fast enough and the teflon piston ring will get too hot and peal part of the way off the piston and preventing the piston from making a good seal.The degree to which the teflon ring peals back would determine how much pressure is built up before it stops building up pressure in the tank.
If you take the pump apart I bet you'll find a damaged piston ring and cylinder or a broken reed valve.The problem is you would have to replace the whole pump assembly.Hope this helps.Good luck.
Tinker
jmv
Question: Tube Seal

jmv

How do you install the tube seal?
wedgefield
Question: Dewalt D55141 Compressor

wedgefield

The compressor is a couple of years old. The compressor runs fine, but sometimes after it runs up to 150psi and the compressor kicks off, the air will leak down until the kick-on threshold. Sometimes the air will stay in and sometimes not. The leak is somewhere right around the compressor (inside the black box).

It seems like a check valve somewhere is sticking intermittently, but I'm not sure which one and/or where.

Has anyone had any experience with this, or know which part I need to replace? Thanks.
Tinkerdave
Reply: Dewalt D55141 Compressor

Tinkerdave

Hi Wedgefield, Most of the time its Part Number: D27022 check valve that does not seal all the time.Check that first. Hope that helps.
Tinker
Stryker223
Reply: Dewalt D55141 Compressor

Stryker223

My compressor does that every now and then and the reason for it is not the check valve! The aluminum tube that comes off the pump is so slick, the rubber hose slides off it no matter how much clamping pressure I put on it. I just have to remove the pump unit and slide the hose back onto the tube and clamp it back on and I'm good for a few months. The next time it happens I think I might try some super glue, lol!
Take care
Michael
marty
Question: Humming

marty

I have the d55141 and it has been humming before it kicks in the pump; now it does nothing.
Rick Elder
Question: Relief Valve Failure

Rick Elder

There is a small pressure relief valve on the large brass fitting where the air enters the tank from the pump on my D55141. Air leaks out of the small hole on the top of it all the time. It is easy to replace, but I don't see it listed. Anyone know the part number, and where to get it?
Ben
Question: D55141 Compressor

Ben

My compressor pumps air till the safety value blows and continues to run till it blows again over and over. I seen other had this problem and the diagnosis was pressure switch. I ordered and changed the pressure... no difference. I am at a loss.
Herb
Reply: D55141 Compressor

Herb

I've got the same problem! And it looks like others do to. I don't know how to fix this either.
1204805
Reply: D55141 Compressor

1204805

Did you get the problem fixed? What was wrong with it? mine is doing the same thing.
Tinkerdave
Reply: D55141 Compressor

Tinkerdave

Hi Ben and Herb,
The pressure switch has cut in pressure of 120 PSI (This is the pressure the unit should turn back on) and a cut out pressure of 150 PSI (This is when the compressor should shut off) The blow out safety valve should activate at around 160-170 psi.Is the blow out safety valve being activated under 150 PSI? If so your safety valve is bad. If its being activated over 160 your pressure switch is bad.They made two pressure switches for the type 1 and the type 2,3,4,5.Your showing the type 1 which should be the N003307SV.Not the N003306SV.
Also that series of compressor had a problem if the tank was not drained after every link removed and slag would work down the pressure switch tube clogging it and not allow pressure to get to the switch thus allowing it to build up enough pressure to kick the safety valve on.Most of the time the switch air inlet would be filled with mud and dirt.
check these thing out and if you still have a problem let us know and we will take you through the next trouble shooting steps.Hope that helps.Good luck.
Tinker
Is it difficult to replace a pressure switch?
bob
Question: D55141 Compressor

bob

My compressor will pump up but will not shutoff and will continue to pump until it blows the safety valve then will keep doing this over and over. Would this be the pressure switch?
Pete Cappellino
Question: Compressor Will Not Stop Running

Pete Cappellino

My compressor just runs and runs. It will expel air but keeps on running. What parts do I need to replace?
dwight johnson
Reply: Compressor Will Not Stop Running

dwight johnson

link removed
alex torrealva
Question:

alex torrealva

The regulated pressure does not work.
donnie wigginton
Question: Losing Air

donnie wigginton

When the air builds up pressure it will start leaking at a small hole on the outside of the head.
Greg Pham
Reply: Losing Air

Greg Pham

I experienced the same problem with my DeWalt D55141 compressor. The air leaks when the pressure reaches 80 to 100 psi. I saw a small hole on the outside of the head if you shine a light from the other side of the head. I filled the hole on the outside using epoxy pudding that I bought at a hardware store.
Mark
Reply: Losing Air

Mark

Hi Donnie and Greg,

The hole on the side of the head should be there. It is a pressure release hole to guard against a bad check valve. If the check valve fails, air from the tank will bleed back to the cylinder. With the tank pressure pushing back on the piston the motor must work much harder and will heat up and fail. The hole must not be blocked. Replacing the check valve should solve the air leak. The check valve is part #D27022 and is available from http://www.ereplacementparts.com.

I hope this helps with your repair!

-Mark

Kevin
Question: Drain Oil

Kevin

I've had the DeWalt 55141 compressor for a few years now and I want to change the oil but I've lost the manual. What is the best way to drain the oil and replace the oil with new oil?
mke
Reply: Drain Oil

mke

I just took mine apart. It doesn't use oil. It has dry bearings.
david Schultz
Question: Dip Stick

david Schultz

I need to order a dip stick for a D55141 model. Where do I find it?
Elton Birch
Question: Unloader Valve ?

Elton Birch

My compressor looses air while compressing. This continues after it shuts off. When it tries to restart the pressure on the compressor is too high and the motor stalls. Is this because of a sticking check valve or is there an unloader valve I don't see. Help.
CHRIS ANDRADE
Question: ELECTRICAL

CHRIS ANDRADE

MY COMPRESSOR HAS BEEN RUNNING SLOWLY AND SMOKING SO I TOOK IT APART AND NOTICED QUITE A BIT OF ARCHING FROM THE BRUSHES. THE ARMATURE WAS DIRTY SO I CLEANED IT AND THE BRUSHES TOO. PUT IT BACK AND SAME AMOUNT OF ARCING?
THERE DOESN'T SEEM TO BE ANY SHORTS OR LOOSE WIRES. IS IT POSSIBLE THAT THE ARMATURE IS BAD? WHAT ELSE SHOULD I TRY?
Mark
Reply: ELECTRICAL

Mark

Hi Chris,

The arching is caused by a shorted out armature. DeWalt does not offer individual parts for the motor on this compressor. You will need to purchase the motor and pump assembly to make the repair. The motor and pump assembly is part #A16342 and is available from http://ereplacementparts.com.

I hope this helps with your repair!

-Mark
roger
Question: Compressor Is Not Stoping

roger

When the compressor start charging until 120 psi the motor
doesn't stop automatic, just continue working. What is wrong with it?
Mark
Reply: Compressor Is Not Stoping

Mark

Hi Roger,

It sounds like you have a bad pressure switch. The pressure switch is the part that senses when the compressor has filled the tank to a certain pressure at which point it cuts the power to the motor. The pressure switch is part #A05802 and is available from http://ereplacementparts.com.

Good luck with your repair!

-Mark
I have air compressor D55141. This compressor is running and running never make stop, when the valve pressure past 130 the valve safety is open and continued running.
How I can repair and what is the part need replaced?
Mark
Reply: Air Compressor DeWalt D55141

Mark

Hi Luis,

It sounds like your pressure switch has failed and will need replacing. It is item #312 on page B of the parts diagrams. The pressure switch is part #A05802 and is available from http://ereplacementparts.com.

Good luck with your repair!

-Mark
My compressor is not holding the air pressure over 50psi and the the air is leaking out of the pump assembly black box.

When I took that apart I found that the air is leaking out of (see the red circle in the pic)

link removed

Is this an easy repair? should I do it myself or take it to the DeWalt shop or just get a new compressor?


for ref
DeWALT D55141 Parts List and Diagram - Type 1 : eReplacementParts.com

thanks
UtahAV
Reply: DeWALT D55141 2 Gallon Portable ...

UtahAV

Most likely there is a small hole in the head casting. Replacing the head should solve the problem. You should need parts D29146, head and Z-D24819, head gasket. You should be able to easily do this repair. Form the pic it looks like you have already done all of the hard work!

Good luck!

-UtahAV
-Mark
Misomosi
Question: Dewalt D55141 Air Compressor

Misomosi

I own a D55141 compressor and it will no longer compress beyond 45 psi. There does not seem to be an air leak anywhere and the motor never turns OFF. When I disconnect the power and air hoses, the tank will keep the low psi forever...it this a problem with the pump regulator?
cmoorejack
Reply: Dewalt D55141 Air Compressor

cmoorejack

Hey misomosi,
most likely it is your piston/sleeve assembly..it is just wore out and needs replaced..check out the breakdown on ereplacementparts.com to where it is located..[page two] part # kk-4964 .. you may want to take this in to a repair shop if you are unfamiliar with this type of repair..hope this helps?:)
Craig
Misomosi
Reply: Dewalt D55141 Air Compressor

Misomosi

Craig, thx for the quick response. This is great information.
-Mike.
calderongil
Reply: Dewalt D55141 Air Compressor

calderongil

Hello:
Somebody can help me to know: For how much pressure (psi) goes off the air compressor model Dewalt D55141 ?
Thank you for your answer.
Regards,
mrromero
Question: Compressor Problems

mrromero

I have a dewalt compressor type 1 that runs but will not fill tank with air. Is their a gasket or part that I need to replace?
cmoorejack
Reply: Compressor Problems

cmoorejack

Hey Mrromero,
Chances are you will need to replace the piston/rod assy part# kk-4964 ..
the leatherlike ring wears out on the piston head and the cylinder wears out also..sold in a kit form..ereplacementparts.com $29.75...
check out the parts breakdown..it is reference # 325...
hope this helps..:)
Craig
mrromero
Reply: Compressor Problems

mrromero

Thanks very much!
I originally bought the compressor because it was much quieter than any other I could find. It worked very well for a while, but then wouldn't start because it was trying to start against the pressure head. The relief valve wasn't working. Since I live a two hour drive from the nearest service center, it would have been two hours up, two hours back, wait for several days and then two hours up and two hours back, I decided to see what I could do. With a little shaking and banging the relief valve let go and we were up and running. This was good for a month when it just plain stopped. Faced with the same scenario I decided I'd take it apart and see if I could find the problem. (I've done this with many problem machines in the past.) I found that one of the brushes was hung up. I monkeyed with it and got the brush to seat and off it went. Good for another couple of months. Stopped again. Same problem. Ordered new brushes, but when brushes hang up or bump on the commutator the commutator is damaged so this fix might not work. The brushes sent were the wrong ones, but they don't offer any others so I tried them. No go. So I decided to order a whole new motor assembly. Guess what. The motor assembly costs $235 plus shipping. Now if you didn't notice, that is more than the cost of a new unit. I tried to point this out to the folks at DeWalt, but never got any where.

fancyboxy