Easy
15-30 minutes
This is a genuine item that is supplied by the original equipment manufacturer for Porter Cable nailers. It is an identical replacement for a missing or damaged trigger assembly that was installed in a new unit, please make sure to refer to the appropriate diagrams of your model for the correct location and installation of this component. This high-quality part is made of durable plastic and is sold individually.
Trigger Assembly 634174-00
OEM part for: Porter Cable
Part Number: 634174-00
$9.81
In Stock
Ships within 1 business day 
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Compatibility
This Trigger Assembly will fit the following 5 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Porter Cable
This item works with the following types of products:
- Nailer Parts
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Fast delivery. Priced right. Easy install and perfect fit.
Joseph -
October 5, 2021
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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.
Wouldn't fire just a slight pop of air from trigger.
Paul - April 15, 2016
👍 6 of 6 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Small hammer, punch, air, QTips, tool oil.
Punch the trigger pin using small punch through grommet this will save grommet for reuse.
Remove trigger and punch the two pins for the trigger assembly out from either side the the shorter pin is on the bottom.
Remove trigger assembly by applying light air to hose fitting and the assembly will pop out quickly. Use a hook to pull out remaining housing of assembly that will be left behind. Hook air hose to gun to remove any trash inside gun housing then remove air hose and clean trigger assembly housing with a QTip to remove excess oil or trash. Lubricate trigger assembly O Rings with gun oil or Vaseline and press assembly in with fingers until seated. Install the two roll pins using the punch with short pin on bottom long pin on top. Finally install the trigger back into place using the punch to help line up for the pin to be inserted correctly on the first or second try. Slip the tiny grommet onto pin on the round grooved side of pin hole. Lightly oil gun and works like new again. This took maybe 20 minutes at most from getting the tools to putting them back up. 28$ worth of parts saved from spending 160$ on a new nail gun.
Remove trigger and punch the two pins for the trigger assembly out from either side the the shorter pin is on the bottom.
Remove trigger assembly by applying light air to hose fitting and the assembly will pop out quickly. Use a hook to pull out remaining housing of assembly that will be left behind. Hook air hose to gun to remove any trash inside gun housing then remove air hose and clean trigger assembly housing with a QTip to remove excess oil or trash. Lubricate trigger assembly O Rings with gun oil or Vaseline and press assembly in with fingers until seated. Install the two roll pins using the punch with short pin on bottom long pin on top. Finally install the trigger back into place using the punch to help line up for the pin to be inserted correctly on the first or second try. Slip the tiny grommet onto pin on the round grooved side of pin hole. Lightly oil gun and works like new again. This took maybe 20 minutes at most from getting the tools to putting them back up. 28$ worth of parts saved from spending 160$ on a new nail gun.
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Nailer would not fire
David - September 22, 2018
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Hammer, small finish nails
Removed trigger pin to remove trigger.
Removed 2 pins holding trigger valve, removed and replaced trigger valve. Reinstalled pins, Reinstalled trigger. Reinstalled trigger pin.
Removed 2 pins holding trigger valve, removed and replaced trigger valve. Reinstalled pins, Reinstalled trigger. Reinstalled trigger pin.
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Trigger valve wet bad
Jeff - April 6, 2016
👍 0 of 1 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers
Very easy replacement . Instructions where right on .
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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.
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.
