Get the 62687
"42 in. Long Reach Air Scraper" directly from HF plus the shinglehead.
1) Ensure the toolhead fits:
The shaft on the shinglehead is thicker than that of the factory chisel. This was necessary because the lighter shaft wasn't rugged enough for ripping roofs and would often fail to be retained in the power handle when buried.
Therefore it is often necessary to clean up the shaft hole to make sure the shaft flows properly. Some of them fit right out of the box, but usually there are some burrs and shards, which usually break clear by forcing the head in a few times on different rotations. A rare one will require file or punch to clean up.
It needs to loose enough for the bit to fall freely through it with noticeable slop. Shaving the shaft is not recommended because it'll result in heads coming loose when buried.
The other consequence of the thicker shaft is that sometimes the ball bearings won't retract enough to insert/release the head, which is addressed by removing a few thousandths from the retaining ring.
2) clean up protrusions:
The most important modification is to bevel the hammer housing. The ledge created by the factory's square cut often catches the separated layer and halts the flow of the tool. Cutting a bevel creates a ramp for the shingles to ride over.
This air hammer has a protruding clamp, which makes another ledge to snag on. Webs welded in front of the clamp guide the roof debris clear for yet smoother operation.
You can get away with skipping these steps, but once in the field you'll soon wish you hadn't.
1) No hammer action when trigger is pulled.
On the cylinder walls and on the piston, the factory sometimes applies an oil to prevent rust, which sometimes stiffens up and inhibits piston travel. Spray some WD-40 etc. down the shaft hole followed by pushing the piston back with a stick a couple times to solve this problem.
Razor Bar and Air Razor are covered under US Patent No. 7,360,473 roof-shingle-removal-tool.com, and all it’s contents are copyrighted 2006-2009 to the holder of that patent, all rights reserved