Question about Makita Roofing Coil Nailer AN451
My makita roofing nailer sends two nails and jams. I had this fixed one and it took weeks. I need this now and want to try to fix it myself. The man that fixed it said there was a pin inside that gets out of place and causes a rebound that sends 2 nails. I don't know where the pin is and i need advice or a diagram. I don't want to just start taking it apart and have stuff jumping out everywhere.
You can find a parts list at the following address:
Rebuild kit # 192393-0 (search ebay for lowest price) will usually fix your problem. But for immediate/ temp fix try adjusting the depth thumb screw all the way down or all the way up and lower the pressure a little. Sometimes it helps to put the firing pin in a different position. I believe that fine scratches on the oring contact surfaces in the headvalve actually cause this problem. Before you install the rebuild kit, examine headvalve parts with magnifying lens and sand fine scratches with 300 - 400 grit sandpaper. Lube orings in the headvalve with silicone paste (Danco brand sold at Lowes in the plumbing department) it will help get a good seal. For best results replace the headvalve springs. I do not believe that they come in the kit. Good Luck with the repair.
Posted on May 10, 2009
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Posted on Jan 02, 2017
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