Genuine Manufacturer Sourced replacement part designed for use with some Senco Staplers. This part is made out of Metal and it is Sold Individually, it measures 3/16". It has a Piston attached to it and it is what drives the staples. A bent or damaged Driver should be replaced.
Remove the top of the gun, remove the piston/driver. Remove the worn seals. Clean and lube the inside of the gun. Line up the hole in the driver and the hole in the piston, then with a punch drive the larger pin in first, then the small pin inside of the larger one. Install the piston and driver, and the new seals. Then replace the top.
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Pull head off 4screws
Push piston out
Put new piston in vice and assemble driver bang in rivets with hammer and back side of nail punch there are 2 rivets big one 1st then 2nd
Install new seals
Slide in driver put head back the way it was tighten 4 machine screws
Take a break
Go back to making money
Remove 4 top allen screws and gun cover, pull out piston
Place driver head in vise
Punch out spring pin 90% remove broken driver head
Install new driver, punch in spring pin
Put parts back together
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The driver blade on my Senco SKS 1/4\" crown stapler bent from hitting a hidden screw or nail in a floor I was working on.
Repair was pretty straight forward. Remove the 4 screws from the top of the gun, then remove the plastic or aluminum cylinder sleeve in order to slide out piston/driver assembly. The driver blade is secured to the piston with two steel roll pins. Drive out the inner roll pin first, then the second larger one. You need a couple of the
... Read more correct size punches for driving out each roll pin. After removing the two pins, pull out the old driver blade and insert the new one. Drive in the large roll pin and then the smaller one. I misaligned the roll pins 180 degrees. It might be easier with two people. One to hold the small piston, and the second person to drive out the roll pins.
I put a tiny film of lithium grease on the O-ring that\'s on the cylinder before inserting it back into the tool housing. Replace the piston/driver assembly into the cylinder and reassemble the gun in the order you took it apart. Don\'t over tighten the 4 screws when you put the top back on the gun.
Relatively easy fix if you are mechanically inclined and pay attention to the order of things when you took the gun apart.
If you see scoring in the cylinder or the piston has obvious damage, replace those to items also.
1. Remove cylinder cap/muffler assembly
2. Remove piston/driver assembly
3. Remove both roll pins from piston/driver assembly
4. Install new driver with both new roll pins
5. Inspect cylinder for any debris from broken driver, remove any found pieces
6. Inspect for any damage to cylinder wall ie scratches/bur
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7. If none found reassemble using new seal on piston if existing is damaged
8. Tighten the 4 allen head screws on cap assembly evenly / being careful not to over tighten
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