Easy
Less than 15 minutes
O-rings are designed to contain thousands of pounds of pressure by creating a seal between two or more parts. O-ring measurements are defined by the inside diameter and the thickness.
There are many causes for O-Ring failure, such as pressure, friction, temperature or chemicals. The most common are:
O-ring 034158-00
OEM part for: DeWALT, Black and Decker
Part Number: 034158-00
$5.19
In Stock
Ships within 1 business day 
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Product Description ?
- Classification: Part
- Weight: 0.01 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This O-ring will fit the following 155 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
DeWALT
Black and Decker
Show More Compatible ModelsThis item works with the following types of products:
- Miter Saw Parts
- Saw Parts
- Screwdriver Parts
- Grinder Parts
Customer Part Reviews ?
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O ring
Broke off the locking pin on my Dewalt chopsaw. Ordered a new pin and O ring. Parts arrived slowly due to supply shortage, but they work perfectly in my saw.
Guest -
December 30, 2021
Verified Purchase
The Product was correct one delivery and delivered in timely manner.
Guest -
October 31, 2020
Verified Purchase
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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.
12" Dewalt Compound Miter Saw Lock Pin was broken
Howard - December 15, 2021
Tool Type
Miter Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
1. Removed Blade cover retraction arm.
2. Removed blade up position stop bolt.
3. Lift Blade up to clear lock pin.
4. Push broken Lock Pin out on Blade side.
5. Slip new o-ring onto lock pin.
6. Slide new lock pin and o-ring into position.
7. Push Blade down and re-install stop bolt.
8. Re-install Blade cover retraction arm.
2. Removed blade up position stop bolt.
3. Lift Blade up to clear lock pin.
4. Push broken Lock Pin out on Blade side.
5. Slip new o-ring onto lock pin.
6. Slide new lock pin and o-ring into position.
7. Push Blade down and re-install stop bolt.
8. Re-install Blade cover retraction arm.
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Lock pin to hold saw closed sheared off
Douglas - January 16, 2020
Tool Type
Miter Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Adjustable Wrench, Torx bits
Parts Used
1 Remove stop nut on back of saw, this is the one that has the bar attached to open and close the blade guard.
2 Open saw (motor head fully) to access pin.
3 Use screw driver or punch to push out pin towards the blade.
4 Install O-ring onto new lock pin.
5 install new pin into slot.
6 Close saw engage lock pin and attach stop nut.
2 Open saw (motor head fully) to access pin.
3 Use screw driver or punch to push out pin towards the blade.
4 Install O-ring onto new lock pin.
5 install new pin into slot.
6 Close saw engage lock pin and attach stop nut.
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locking pin broke
Jack - December 19, 2018
Tool Type
Miter Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Pliers
Parts Used
loosened screw on the stop so saw could move all the way back. pushed pin out pushed new one in, I had to use pliers to get it in. then moved saw back into place and tightened locking screw.
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Locking pin broke
CHUCK - October 12, 2018
Tool Type
Miter Saw
Difficulty
Medium
Time
Less than 15 minutes
Tools Used
, On board blade changing tool is all you need
Parts Used
Loosen the blade guard to swing it out of the way to remove the broken pin and installed the new one with a new O ring (lost the O ring so had to get a new one). The blade removal wrench is right with the saw so no addition tools are needed :o)
This is the third time I have had to replace the locking pin so it gets easier and faster each time
This is the third time I have had to replace the locking pin so it gets easier and faster each time
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Locking pin sheared off - Dewalt 708 Type 4
Daniel - August 17, 2018
Tool Type
Miter Saw
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, String, Drift punch
Parts Used
1. Removed the bolt from the blade guard linkage.
2. Tie the head back to the slider rod in the upright position to keep it from dropping when the pivot shaft is removed
3. Loosened set screws from head pivot shaft
4. Use a punch to drive the pivot shaft partially out. until the spring and bushings come out.
5. Being aware that the head may drop some, drive the pivot shaft out until the head is loose.
6. Manipulate the head back far enough to slide the broken locking pin out.
7. Put new o-ring on new locking pin and install, careful to not crimp the o-ring as you insert the pin
8. Lift head and pivot spring/bushings back into place, drive in pivot shaft. 2 people for this helps.
9. Tighten pivot shaft set screws, reinstall bolt in guard linkage.
2. Tie the head back to the slider rod in the upright position to keep it from dropping when the pivot shaft is removed
3. Loosened set screws from head pivot shaft
4. Use a punch to drive the pivot shaft partially out. until the spring and bushings come out.
5. Being aware that the head may drop some, drive the pivot shaft out until the head is loose.
6. Manipulate the head back far enough to slide the broken locking pin out.
7. Put new o-ring on new locking pin and install, careful to not crimp the o-ring as you insert the pin
8. Lift head and pivot spring/bushings back into place, drive in pivot shaft. 2 people for this helps.
9. Tighten pivot shaft set screws, reinstall bolt in guard linkage.
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Lock pin broke off.
John - September 24, 2017
Tool Type
Miter Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
1. Removed two guards.
2. Removed the broken pin.
3. Installed the new pin and the O-ring.
4. Reinstalled the guards.
2. Removed the broken pin.
3. Installed the new pin and the O-ring.
4. Reinstalled the guards.
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Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
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.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
