Medium
30-60 minutes
This is an OEM replacement part for DeWALT compressors. The O-ring is designed to fit in between the cylinder head and body to provide an air-tight seal to allow the piston to work properly. The part is made of high-quality material. This item is sold individually.
Oring 5140069-99
OEM part for: DeWALT, Porter Cable
Part Number: 5140069-99
$3.99
In Stock
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Frequently Purchased Together ?
Compatibility
This part will fit the following 5 machines
DeWALT
DWFP55120 COMP 3G 135PSI 120V View Diagrams & Manuals
DWFP55120 (Type 1) Comp 3g 135psi 120v Power Tool View Diagrams & Manuals
Porter Cable
CMB15 (Type 1) Porter Cable Compressor View Diagrams & Manuals
CMB15-AR (Type 1) Compressor Power Tool View Diagrams & Manuals
CMB15-B3 (Type 1) Compressor Power Tool View Diagrams & Manuals
This item works with the following types of products:
- Compressor Parts
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Compressor wouldn't make pressure, only produced 50 psi.
Ronald - May 4, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Compressor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Power Drill, Wrench Set, Adjustable Wrench
Parts Used
1. Removed 10 housing screws with long shank Phillips screwdriver.
2. Separated housing halves & removed electric motor assembly after disconnecting white
electrical leads from electric motor plus green ground wire and air tank fitting at the tank.
3. Exercise care in removal keeping track of the black rubber motor mounts which encompass the motor assembly on all sides. Take note how they fit in place and don't lose them.
4. Pulled cylinder head from the motor utilizing a 5/32" Allen wrench and replaced cylinder
head and the two translucent O-rings; one on each side of the head.
5. Reassembled in reverse order. Used a small zip tie to hold white electrical lead in place
around armature field as the zip tie had to be cut in disassembly.
2. Separated housing halves & removed electric motor assembly after disconnecting white
electrical leads from electric motor plus green ground wire and air tank fitting at the tank.
3. Exercise care in removal keeping track of the black rubber motor mounts which encompass the motor assembly on all sides. Take note how they fit in place and don't lose them.
4. Pulled cylinder head from the motor utilizing a 5/32" Allen wrench and replaced cylinder
head and the two translucent O-rings; one on each side of the head.
5. Reassembled in reverse order. Used a small zip tie to hold white electrical lead in place
around armature field as the zip tie had to be cut in disassembly.
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O rings on piston cylinder leaked air
Wendell - June 17, 2020
Tool Type
Compressor
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Power Drill, Socket set, Nutdriver, Adjustable Wrench
Parts Used
took the compressor all the way apart
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Would not build pressure above 30 lbs
William - February 7, 2019
Tool Type
Compressor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Wrench Set, Allen Wrench
Removed the housing with Philips head screwdriver.
Disconnected the wiring using pliers to pull the quick connects.
Disconnected the storage tank from the compressor using open ended wrench
Pulled the compressor apart using an allen wrench.
Cleaned off the rust with a scotch brite
Replaced defective valve and replaced the o rings
Reasembled.
Disconnected the wiring using pliers to pull the quick connects.
Disconnected the storage tank from the compressor using open ended wrench
Pulled the compressor apart using an allen wrench.
Cleaned off the rust with a scotch brite
Replaced defective valve and replaced the o rings
Reasembled.
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Wouldn't build over 30 lbs of pressure
Philip - June 5, 2018
Tool Type
Compressor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Allen wrench
Removed the casing, removed the 4 allen head bolts took the valve seat out , found it had a broken reed valve, replaced it with the new parts and it was working like new.
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Reeds broke from moisture in air
Jack - September 21, 2016
Tool Type
Compressor
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Wrench Set
1. Remove cowling
2. Take off pipe at compressor head
3 Remove valve seat
4 Replace valve seat with new one with o-rings in place
5 Reassemble compressor head and cowling
Runs great now. Just like new
2. Take off pipe at compressor head
3 Remove valve seat
4 Replace valve seat with new one with o-rings in place
5 Reassemble compressor head and cowling
Runs great now. Just like new
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
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