Genuine Bostitch replacement part, this item is sold individually. The Piston/Driver Assembly is the part of the nail gun that drives the nail into the material that is being used. To help extend the life of a pneumatic tool use the specified oil in it daily 4-5 Drops will do every time you use it. The Piston/Driver Assemblies do have a tendency to bend or break if not used correctly or if you are driving nails into extra hard material.
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★★★★★
★★★★★
worked beautifully
Part was a perfect fit and arrived promptly.
Guest - July 9, 2019
Verified Purchase
★★★★★
★★★★★
New part
I recieved the part in a timely manner and it was the exact fit
Guest - November 20, 2019
Verified Purchase
★★★★★
★★★★★
Easyrepair
Arrived quickly
Guest - February 22, 2020
Verified Purchase
★★★★★
★★★★★
Right stuff right time
I received what I needed quickly, economically and they made it easy to cancel an order I made by mistake.
Robert - May 21, 2020
Verified Purchase
★★★★★
★★★★★
Easy repair on a Dewalt 18 gauge nail gun that stopped working after a few uses.
Your video's showed me how to repair the tool and the parts were very reasonably priced. I will use this service again and recommend it for all DIY repairs.
Guest - June 5, 2020
Verified Purchase
★★★★★
★★★★★
Quick repair
Removed four screws pulled old piston and plastic ring on piston. Popped ring on new piston re-inserted piston and replaced screws. Five-minute fix works like new.
Guest - April 22, 2022
Verified Purchase
★★★★★
★★★★★
Awesome
Got here fast and just as I ordered
Guest - June 27, 2022
Verified Purchase
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Remove the 4 bolts from the head. The remove the piston/driver from the cylinder. Look for any broken parts or any debris in cylinder. Put the piston ring in the top groove of the piston, lightly oil the piston ring, then insert it into the cylinder. Replace the head with the for bolts, be careful not to damage the head gasket
Remove 4 allen screws from head of nailer and remove head.Remove piston and driver from cylinder. Install new piston ring into groove at top of piston and insert into cylinder. Replace head and 4 screws. I\'m sure that there\'s a torque spec for the screws I use the good and tight method. I\'ve never had any problems with reusing the ga
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Driver wouldn\'t rebound/reset behind nail head. Thus, it wouldn\'t set/shoot
If you\'ve already diagnosed the issue, mine being that the nail gun wouldn\'t fire a nail, then this repair is very simple. I have the Bostitch BT-1855 18 gauge nailer. First you will need to remove the cap and (4) Allen head screws at the rear of the gun (part #181917, or item 2 if you are looking at your factory schematic which is the
... Read moreexploded diagram. Once you have removed the cap be sure to set aside the frame cap gasket (item 3, part #175682). Concealed inside the cap are items 4-9 on your schematic. You should see a clear bumper, spring and O-rings. You shouldn\'t need to replace these. You will need to remove and replace items 10-16 on your schematic. They are as follows: 10-piston driver (#180451) 11-piston ring (#180457), 12-cylinder sleeve (#180458), 13-O-ring (#180459), 14-check seal (#180460), 15-bumper (#180461), 16-driver guide (#180462). I pulled everything out and lined it up just as it went into the nailer, so as not to forget the original placement and mechanics. Remove your replacement parts from their packaging. Assemble items 10-16 together, then place the completed assembly into the gun; rather than putting each individual item back in place. Reattach frame cap seal and frame cap. Test fire gun. All told it should take about 15-30 minutes to complete this repair. You should only need the appropriate size Allen wrench and maybe a small flat head screw driver for prying some of the O-rings out.
Removed head screws.
Used new driver to push old out of gun.
Slide new driver into cylinder.
Replace head unit.
Screws back in.
Attach air and test fire.
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Driver pin was broken and trigger valve was leaking
Removed the off back plate
Removed the piston/driver, piston ring and o-ring
Installed the the new piston/driver, piston ring and o-ring
Installed back plate
Shoots like a new gun
removed srews on to removed old piston and oiled new one sliped it in replaced top works fine
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Item is not in stock and usually ships 10-15 business days from the time you place your order.
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