Question about Dewalt Air Tools & Compressors
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Posted on Jan 02, 2017
SOURCE: D51844 Won't Fire Nails
The Dewalt D51844 uses a full round head 20 degree nail. Sometimes the generic brand nails are not made exactly to the stated degree. They do this so their nails will work on a variety of nailers. Best to check the nails angle in relation to the angle of your nailer. Place a strip of nails on the outside of the rail. Align the heads of the nails to a convenient straight edge on the rail then check that the head and shaft of the first nail is aligned with the barrel. If the lower part of the nail projects out further than the head, then the driver will miss the head. If the head of the first nail appears close enough to barrell for the driver to hit it then place a new strip of nails into the mag and slide the pusher foward. Fire one nail, if success, remove the nails from the mag and check if the plastic holding the nails together is projecting in front of the first nail. Sometimes the plastic is not right, too stiff, and will not let the next nail align with the barrell. If the next nail appears ready and slides forward then the driver may not be going all the way up after shot. Check by inserting a metal rod into barrell and push driver up till it stops. If the driver is in the uppermost position, then most likely brand of nails. Use Dewalt nail. Good Luck
Posted on Feb 25, 2009
Generally, when you attempt to fire and only get an air sound at the trigger, the problem is air leaking past the orings in the head valve. Here are a few things to check and a simple test.
Remove the trigger from the gun so that you can have access to the trigger pin. Remove the nails from the gun. After removing the trigger and the nails, reconnect the air supply (check for 100psi) Place the nose of the gun against wood and with a very quick ****, depress the trigger pin all the way in. If the gun fires then the safety foot is not allowing the trigger to depress the pin all the way in. Make adjustments to safety and check for worn trigger and trigger retainer pin. If the gun does not fire, remove the head. Place the head on table and depress the headvalve all the way in with your thumbs then place a finger over the small vent-hole on the gasket surface and release thumb pressure. The headvalve should remain depressed due to vacuum in the valve and will pop up when you remove your finger on vent hole. If the headvalve does not stay in, air is leaking past the orings. Remove headvalve parts and use magnify lens to find small scratches on the surface where orings contact. Remove scratches with very fine sandpaper (300 - 400 grit) Make sure all the orings are not cut (use magnify lens) and fit snuggly. Lube with "Danco silicone grease" available at lowes in the plumbing department. It is used to lubricate orings in faucets. After re-assembly, do vacuum test as described above. If you have vacuum, head is ok. Make sure that the gasket seals around the vent hole where the head mates against the body. You should be good to go. Good Luck and email if you have other questions.
Posted on Mar 05, 2009
SOURCE: Dewalt D51822 fires once only
Hi Bud, This is a common problem as they get older. The mechanisms get a little worn and they pick up a lot of debris, especially the stick nailers. I have had an old bostitch for over 20 years and instead of rebuilding it all the time, I have taken to cleaning it regularly and taking it apart once in a while and wiping it with steel wool to check for any burrs and tiny pieces of the stick wire. The best results I have found are to wash it down with an engine degreaser and blow it out throughly with compressed air and then relube with pnuematic tool oil, especially the piston. Also be sure to put a few drops in the air inlet each time you connect it so it lubes the piston from the inside. Take out any nails and fire it several times onto a piece of wood to make sure the lube reaches everywhere. If you get a little too much inside it will spit it out as you nail but for framing that is not a big deal and I would rather have a little more than not enough. Good Luck, this should Fixya!
Posted on Mar 08, 2009
Check gas expiry date, failing that reove four bolts from back and two from front nose and remove cylinder housing, check piston is free in cylinder and driver is right back, to check you have spark with battery in push and hold down switch arm just below fan and pull trigger you should see and hear the spark, if there is spark you may just need to clean arond spark plug to get a more positive spark, also check o-ring on fan housing as if this is damaged it will alow gas to escape and no ignite.
Posted on Apr 23, 2009
I have both the DC616 and 618 and have used them sucessfully for about three years. Two main things go wrong. There is a drive belt that breaks (drives the spool that give the energy to drive in the nails), second are two small rubber bands on either side of the drive head that break. The bands can be accessed by taking off the front silver cover, the drive belt is access by spliting the case. Make sure you are using the correct nails or the drive pin may become bent and will jamb repeatedly. Hope that helps!
Posted on Jun 26, 2009
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