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DeWalt D518003 - User Manual

DeWalt D518003
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D518003
Bumper Replacement Kit Instructions
DEWALT FRAMING NAILERS MODELS D51822, D51823,
D51844, AND D51845
FOR USE ON DATE CODE (A)
200406 AND EARLIER.
If you should have difficulty
understanding the following
instructions contact a D
EWALT
service center or an authorized
D
EWALT service person, or call
1-800-4D
EWALT.
Important Safety Instructions
Read and understand tool instruction manual before attempting
repairs.
Use only genuine D
EWALT Replacement Parts.
Always wear ANSI compliant eye protection.
Disconnect air from tool and remove all nails before servicing.
Always point tool in safe direction when reconnecting air supply.
CAUTIONS:
•Do not allow dirt, dust or other foreign materials to enter the tool.
Be careful not to scratch or damage the O-rings or any internal
surfaces.
1. Disconnect air supply and remove all nails from tool.
2. Remove the 4 top cap screws (B) using a 5mm Allen wrench.
3. Remove top cap (Fig. 2).
4. Pull out engine assembly and piston/driver blade assembly. If
necessary, pry the engine out of the tool housing with the han-
dle of a hammer or other tool (Fig. 3).
5. Remove old bumper from bottom of housing (Fig. 4).
6. Place new bumper into housing.
7. Grease all exposed engine o-rings and inside bore of top cap.
8. Reinsert engine assembly and push down firmly to seat.
9. Replace top cap and top cap screws.
10. Tighten screws snugly to prevent leaks.
11. Ensure trigger and contact trip are working smoothly.
12. Set pressure on compressor or air line at 80 psi.
13. Pointing tool in safe direction, connect tool to air supply. Tool
must not leak air.
14. Check for proper operation of tool. If tool continues to leak air or
if problems persist, take Nailer to a D
EWALT service center.
15. If warning labels are missing or damaged, request free replace-
ments from a D
EWALT service center.
Part desc. # in kit Part #
Bumper 1 395213
KIT COMPONENT
A
FIG. 1
DEWALT Industrial Tool Co. Inc., 701 E. Joppa Road, Towson, MD 21286 Copyright © 2001, 2003 (DEC-03) Form # 606137-01
The following are trademarks for one or more D
EWALT power tools: the yellow and black color scheme; the “D” shaped air intake grill; the array of pyramids
on the handgrip; the kit box configuration; and the array of lozenge-shaped humps on the surface of the tool.
FIG. 2
FIG. 3
FIG. 4
B
D518003
Directives concernant le remplacement
de la butée :
CLOUEURS POUR CHARPENTES DEWALT MODÈLES
D51822, D51823, D51844, ET D51845
À UTILISER SUR LE CODE
DE DATATION (A) 200406 ET
ANTÉRIEURS
Si les directives suivantes
ne semblent pas claires, com-
muniquer avec un centre
de service D
E
WALT ou un
technicien D
EWALT qualifié.
Consignes de sécurité importantes
Lire et comprendre le guide avant d’entreprendre des répara-
tions.
N’utiliser que des pièces d’origine D
EWALT.
•Toujours porter des lunettes de protection approuvées par ANSI.
Débrancher l’outil du circuit d’alimentation en air et retirer tous
les clous avant d’effectuer les opérations d’entretien.
•Toujours orienter l’outil dans une direction sûre avant de
raccorder l’outil au circuit d’alimentation en air.
MISES EN GARDE :
Ne laisser aucune saleté ou matière étrangère pénétrer à
l’intérieur de l’outil.
Éviter d’égratigner ou d’endommager les joints toriques et les
surfaces internes.
Description de la pièce Quantité N
o
de pièce
Butée 1 395213-00
ÉLÉMENT DE TROUSSE
A
FIG. 1

Questions and Answers

  • B
    Brittany BenjaminAug 17, 2025
    What to do if fasteners jam in my DeWalt Nail Gun?
    • N
      Nancy HarrisonAug 17, 2025
      If fasteners are jamming in your DeWalt Nail Gun, the driver channel in the nosepiece might be worn, requiring a nosepiece replacement. Ensure you're using the recommended size and angle fasteners. Check that the magazine cam latch is holding firmly if the magazine feels loose. Replace a worn driver blade using Kit Cat # D518452 or Cat. # D518232. Also, tighten any loose nosepiece screws with an Allen wrench and make sure nails feed properly through the magazine and into the nose.
  • R
    Ryan LewisAug 21, 2025
    Why is my DeWalt D518003 so sluggish?
    • A
      Angela GallegosAug 21, 2025
      If your DeWalt Nail Gun lacks power or feels sluggish, start by checking the air supply to ensure it's adequate. Lubricate the tool with DEWALT pneumatic tool oil. Replace any damaged or worn O-rings using Framing Nailer O-ring Repair Kit Cat # D518005. Disconnect the air supply and remove the exhaust plate from the top of the tool to clean any blockage in the exhaust port. Check the depth adjustment and reset it if it's set too shallowly. Finally, inspect the driver and replace the driver blade if damaged or worn.
  • T
    Taylor WilliamsAug 25, 2025
    How to fix a DeWalt Nail Gun that won't cycle in cold weather?
    • A
      Amy ArnoldAug 25, 2025
      If your DeWalt Nail Gun isn't cycling in cold weather, first check the air supply. If that's not the issue, the valve may be frozen; warm up the tool and lubricate it with DEWALT Pneumatic Tool Oil or a winter weight pneumatic oil containing ethylene glycol. Also, replace any damaged or worn O-rings using Framing Nailer O-ring Repair Kit, Cat. # D518005. Finally, inspect the driver blade and replace it if broken or damaged using Kit Cat. # D518452 or Kit Cat. # D518232.
  • E
    evelynmarksAug 28, 2025
    Why is air leaking around the nose of my DeWalt D518003?
    • G
      grosschristinaAug 28, 2025
      If you notice air leaking around the nose of your DeWalt Nail Gun when it's at rest, it's likely due to damaged or worn O-rings. Replace them using Framing Nailer O-ring Repair Kit, Cat. # D518005.
  • J
    James WallsAug 30, 2025
    What to do if air leaks around the nose when DeWalt D518003 Nail Gun is actuated?
    • J
      James ArnoldAug 31, 2025
      If air leaks around the nose of your DeWalt Nail Gun when it's in the actuated position, the bumper is likely damaged or worn. Replace it using Frame Nailer Bumper Kit, Cat. # D518006.
  • M
    Matthew BryantSep 3, 2025
    How to fix a DeWalt Nail Gun top cap leak?
    • C
      Christopher PorterSep 3, 2025
      If the top cap of your DeWalt Nail Gun is leaking air, first check if the cap screws are loose and tighten them using the appropriate Allen wrench. If the screws are tight, the gasket or O-ring may be damaged or worn. Replace the gasket/O-rings using Nailer O-ring Repair Kit, Cat. # D518005.
  • J
    jonathansandersSep 6, 2025
    How to repair a leaking trigger valve housing on a DeWalt D518003?
    • L
      Lisa WebsterSep 7, 2025
      If the trigger valve housing of your DeWalt Nail Gun is leaking, this is likely due to an O-ring or valve stem failure. Replace the valve using Trigger Valve Kit: Cat.# D510005.
  • P
    Pamela GraySep 9, 2025
    Why is my DeWalt Nail Gun exhaust leaking?
    • K
      Katherine StephensSep 10, 2025
      If you notice exhaust leaks in your DeWalt Nail Gun, it may be due to a damaged main seal or O-ring, or debris in the tool. Replace the gasket/O-rings using Framing Nailer O-ring Repair Kit, Cat. # D518005.
  • A
    Antonio PatelNov 13, 2025
    Why is my DeWalt Nail Gun skipping nails?
    • S
      Shannon JonesNov 13, 2025
      If your DeWalt Nail Gun is skipping nails or intermittently feeding, several factors could be at play. First, ensure the air supply and couplers aren't restricted. Lubricate the tool with DEWALT pneumatic tool oil. Tighten any loose nosepiece screws using the correct Allen wrench. Verify you're using the recommended size and angle fasteners. Clean the magazine track and nosepiece, and if the magazine is damaged or worn, replace it. Other potential issues include a broken or damaged driver blade (replace using Kit Cat. # D518452 or Cat. # D518232), a worn or damaged trigger valve O-ring (replace with Trigger Valve Kit Cat. # D510005), a worn piston O-ring (replace with Framing Nailer O-ring Repair Kit, Cat # D518005), a worn or damaged pusher spring (replace with Magazine Pusher Spring Kit ...

DeWalt D518003 Specifications

General IconGeneral
BrandDeWalt
ModelD518003
CategoryNail Gun
LanguageEnglish

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