Disassembly of the Model 445 (back)
2.18
 

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Disassembly of the Model 445 Pneumatic Nailer.

Mount the nailer in a padded vise.  Using a soft cloth & screw driver, pry off the rubber cap.
Remove the 4 cap screws.
Remove the nailer cap.
Activate the red safety trigger to release the safety yoke.
Remove the body plate.
Remove the 2 safety yoke springs.
Remove the screw holding the trigger cable to the safety yoke.
Remove the safety yoke.
Remove the 3 cap screws from the plunger using a 5/32" hex allen wrench.
Remove the plunger.
Remove the O-Ring gasket.
Take the nailer out of the vise, then mount it back in the vise with the nailer shoe facing up.
Remove the 4 socket head cap screws with a 3/16" hex wrench.
Lift the channel assembly and adapter foot vertically off the driving blade.
Remove the rubber bumper.
Remove the driving blade assembly.  If the driving blade is broken, tap out from the other side.
The cylinder sleeve may come out with the assembly or you may need to pull it out as well.