Technical Specifications

PROBLEM POSSIBLE CAUSE SOLUTION
1
Driving blade
does not
retract
1. Zero or Low air pressure
Check air supply for 70 psi minimum to 110 psi
maximum
2. Lack of lubrication Manually lubricate through male air inlet fi tting
3. Excessive dirt inside nailer Disassemble and clean
4. Bent or burred driving blade Replace driving blade
5. Seals worn out Replace all seals
6. U-Cup Lip Seals installed upside down Replace all seals
2
Driving blade
retracts slowly
1. Low air pressure Turn up air pressure to 70-110 psi max
2. Bent or burred driving blade Replace driving blade
3. Air supply restricted by small orifi ce Use 1/4" minimum diameter air fi ttings
4. U-Cup Lip Seals installed upside down Replace all seals
5. Excessive dirt inside nailer Disassemble, clean and lubricate
3
Nail is not
countersunk
1. Low air pressure Turn up air pressure to 70-110 psi max
2. Broken Driving Blade Replace Driving Blade
3. Nail hit hard surface Move from obstruction
4. Piston U-Cup Lip Seal installed upside down Replace all seals
5. Driving blade jam nut came loose Retighten or replace jam nut
6. Worn out gate Replace gate.
4 Nailer leaks air
1. Air supply fi ttings loose Tighten all air line fi tting connections
2. Excess air pressure blew out seals
Check air supply for 110 psi maximum—
replace all seals
3. Plunger screws loose Tighten 3 plunger screws
4. Cracked or damaged body Replace body
5. Seals worn out Replace all seals
6. Seals need to be seated Dry fi re Nailer
5
Bottom of
nailer cracked
off
1. Operated without rubber bumper installed Replace damaged parts
2. Excessive air pressure used Replace damaged parts
6
Nails jam in
nailer
1. Not using 18 gage Powercleats nails Use 16 gage Powercleats nails only
2. Continued use after a short hit Clear nail immediately after short hit
3. Nail pusher damaged or spring broken Replace nail pusher assembly
4. Nail channel lose Tighten nail channel retaining screws
5. Bent nail stuck in nail guide Disassemble and clear out bent nail
6. Hit another set nail or hard object Move from obstruction
7. Nail gate worn out Replace nail gate
7
Plunger locked
up—won't
move or fi re
1. Safety trigger not being depressed
Replace damaged plunger, safety yoke and
plunger seal
2. Lack of lubrication Manually lubricate through male air inlet fi tting
POWERNAILER MODEL 445 TROUBLE SHOOTING CHART
12