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. rnrnThere are many causes for O-Ring failure, such as pressure, friction, temperature or chemicals. The most common are: • <u>Extrusion and Nibbling</u> - O-ring has ragged, tattered edges. These are commonly caused by pressure spikes which shear off tiny "bites" from the o-ring, or caused by clearance gaps. • <u>Abrasion</u> - One or both sides of the o-ring appear rough and slightly flattened. Commonly caused by a contact surface that is too rough, contains grit or is too smooth to allow lubrication. • <u>Over Compression </u> - O-ring is flattened on both sides and may have a "ring" split along its length. Commonly caused by excessive pressure or heat. • <u>Heat Hardening</u> - O-ring has a pitted or cracked surface, and often is flattened on both sides. Caused by temperature exceeding o-ring capacity. • <u>Weather/Ozone Cracking</u> - O-ring is covered in small surface cracks. Caused by exposure to ozone, UV rays and air pollution. Excessive seal stretching causes similar cracking.
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★★★★★
★★★★★
The right part
Just as described, I found it using the - this is my problem, this is what will fix it section next to the tool blow up. Fit perfect and solved the problem. Arrived when they said it would.
Louis - August 13, 2019
Verified Purchase
★★★★★
★★★★★
Worked well
Issue with nail gun was on the list of common problems. Clicked on the problem and was given a list of parts. Ordered the parts, replaced them, gun works fine.
Guest - September 13, 2019
Verified Purchase
★★★★★
★★★★★
worked as expected
the part was easy to find. It shipped the same day.
There is nothing to complain about. Good job
Guest - January 30, 2020
Verified Purchase
★★★★★
★★★★★
Easy repair
Arrived quickly and fixed problem
Guest - February 26, 2020
Verified Purchase
★★★★★
★★★★★
Easy repair
Everything was as ordered, arrived in a timely manner and in good condition. Nail gun is now in good working condition.
Thanks Ereplacement parts .
Jerry J.
Guest - June 2, 2020
Verified Purchase
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Everyone said top bumper causes the problem. The bumper was shot so I replaced it. Still did the same thing. Messing with it I found that if I pulled on the trigger pin just a little bit it would let go and retract the driver. I pulled the trigger assembly out and started messing around with it. No luck. However I now noticed a slight air
... Read more leak at the trigger. I purchased all new O rings and trigger pin and spring. Installed and WahLah. it works. Thanks for your help with parts. Have referred U to friends.
I broke nailer down completely and reinstalled all new parts..You make it very easy for repair..All your parts are clearly marked for ease of replacement..Thanks for all you do..Rich Lincoln Ca
Trigger assembly is screw in type; Removed retainer and the pin that secures the trigger, removed trigger then used wrench to loosen and remove the trigger assembly.
Disassembled the trigger valve, breather valve, plunger.
Removed and replaced all the o-rings: 1x- 883831, 1x-883935, 2x- 883936, 1x- 883938, 2x- 883848, 1x- 8839
... Read more42, 1x-urethane retainer 890725.
Reinstalled trigger valve assembly.
Air leak is gone, nailer working great!
Drive out roll pin on trigger
(Wrench) Unscrew air valve assembly, Please note how the assembly goes together.
Replace all O-Rings. Most of the O-Rings are easy to find in a assortment set the two small ones on the spool and there is a larger one with a about 1/16\" cross section that are easily available, those I had to orde
... Read morer.
Use the dental pick to remove the O-Rings and re-install the new ones, take care not to over stretch the new ones.
Lube everything with a little o-ring lube or airline oil.
Re-assemble air valve, and screw into gun.
Put trigger switch back in and drive roll pin into place.
The parts I replaced where destroyed, so I looked at the parts list and figured how to put in the new parts I had ordered. Easy Peasy
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