Question about Senco Fastening Systems No.43OOO1N SLP20 Brad Nailer/Case

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SLP 20 Leaks air from top and I Just replaced the chamber and o Rings.

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The slp20 uses a firing valve part # ba0119 black plastic w/rubber boots. This valve is what prevents air from leaking thru top of gun. If pin hole has developed, or oring # lb0012 is not in place under the firing valve or if the retainer # bf0149 does not fit snugly on cylinder or has cracks, the gun will leak. Assuming oring is in place and retainer is good, suspect firing valve. Good luck

Posted on Mar 29, 2011

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You could have broken internal parts but more likely you have broken or worn o-rings inside the nailer. You can go to the Dewalt service site at, http://servicenet.dewalt.com/, search for your model number and get a good breakdown of the nailer and order the parts you need to rebuild it. If you replace any o-rings, replace all of them.

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Excessive carbon on spark plugs which causes to fail


carbon on sparkplugs are caused by oil in the combustion chamber.

here are some things to do:
1. replace the sparkplug
2. replace your head gasket
3. check if your ignition timing is correct (timing in the distributor, camshaft, and crankshaft)

if these does not solve your problem, try this:
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lastly, if all of these dont work, this is the solution (but quite pricey)
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1 Answer

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1 Answer

I have a 5 gal, i hp craftsmen compressor, 3 years old, used once a year to blow down sprinkler system. Compressor ran up to 120 lbs upon turn on, would not cycle off. manually shut off unit and turned...


Oil free pumps do tend to blow the piston ring (not too expensive) available at searsparts.com. Remove covers to pump and manually turn crank until piston is at top and look at the condition of the cylinder neer top, If it looks scratched, order cylinder kit with piston ring. If it looks good and shiney, could be the valve plate in the head. There are reed valves that tend to break. Run pump however with covers removed and check with soapy water for air leaks and repair as needed (air leaks under the cover will prevent unit from filling). Good luck

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Check the head gasket. Mine just did the same thing. Mine was blown between the two chambers on top. It's very thin right there. I went to the auto parts store and bought some gasket and made my own for about $6. It's up a working great...finally. BTW the gasket kit is on back order right now at Sear's parts website. It appears we aren't the only ones with the problem!

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1 Answer

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I don't have a lot to go on here. Can you describe what does happen? Is there any release of air at all? You can try checking the o-rings for leaks. There are o=ring kits available for under $20 that contain all of the o-rings. Also, proper lubrication is required for operation. If the main plunger chamber does not have enough lubrication, the plunger won't move properly and not set the nail.

Please update this with any details you can.

Thanks,
Dan

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I have a water pump short cylicng problem... I changed the water pump a couple of months ago and everything was fine . It is at my cottage and I go there once a week. Last week, I noticed the pressure...


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1 Answer

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