Question about Hitachi NV45AB2 Roofing Coil Nailer
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Posted on Jan 02, 2017
SOURCE: i have a nv45ab roofing
Hitachi nailers use an unusual design of actually moving the cylinder to fire instead of moving the headvalve. If the cylinder gets stuck in the open position (down), air will leak out of the head. To reset the cylinder, remove the nails and connect air supply. With air connected, lightly rap the head of the nailer against coiled air hose or soft rubber (too hard of a hit could damage the head). If after a couple of hits air still leaks, remove head and check headvalve for cracks. Replace as needed. If headvalve rubber looks ok, remove cylinder and clean/lube. If cylinder has fine scratches where orings make contact, sand smooth with 400 grit sandpaper. Lube with silicone paste, white grease or nailer oil.
Posted on Aug 02, 2011
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