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Subject: DGN845B, D1- Ignitor Cleaning Instructions
202428 and 202429
Date Code Range:
Other Reference: DGN845B, D1
Service Notice: Inspection and Maintenance of Affected Units
Attention Technicians:
We have identified a potential issue affecting units with date codes between 202428 and 202429. If
you are working on tools experiencing intermittent fastenings, please follow the instructions below to
inspect and address the issue.
Affected Model: DGN845B, D1
Procedure: Ignitor Cleaning Instructions
Inspection and Maintenance Steps:
1. Rear Cap Removal:
Use a T25 driver to remove the 4 screws (PT#3) and washers (PT#4) securing the rear
o
housing (PT#6) to the base of the tool.
Open the fuel cell door and remove the plastic cover (PT#6).
o
SERVICE NOTICE
ISSUED By TEChNICal SERVICES
PRODUCT SERVICE DIVISION
Service Notice No.
Page 1 of 4
Issued: 04/29/2025
SN970
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Summary of Contents for DeWalt DGN845B
- Page 1 PRODUCT SERVICE DIVISION SERVICE NOTICE ISSUED By TEChNICal SERVICES SN970 Subject: DGN845B, D1- Ignitor Cleaning Instructions Service Notice No. 202428 and 202429 Date Code Range: Page 1 of 4 Other Reference: DGN845B, D1 Issued: 04/29/2025 Service Notice: Inspection and Maintenance of Affected Units Attention Technicians: We have identified a potential issue affecting units with date codes between 202428 and 202429.
- Page 2 2. Removal of Fan and Sparker Wiring: Disconnect the sparker connector (RED) by pulling the cable "up" with a non-marking tool. Disconnect the fan connector (Yellow) by pressing down on the connector and pulling “down." 3. Ignitor Inspection: Check the ignitor connection for excessive lubricant. Correct Amount of Lubricant Incorrect / Excessive Lubricant If excessive grease is found, report back to us immediately so we can inform the...
- Page 3 Apply a quick-drying cleaner. Use compressed air to accelerate the drying process and remove any debris. 5. Inspect Ignitor Probe: Check both the external (wire side) and internal (fan side) ignitor probes for lubricant. Correct Amount of Lubricant Incorrect / Excessive Lubricant Checking Internal (Fan Side) Ignitor Probe for Lubricant Correct Amount of Lubricant Incorrect / Excessive Lubricant...
- Page 4 Follow the same removal process if excessive lubricant is found. 6. Reassemble Tool: Follow the disassembly steps in reverse order to reassemble the tool. 7. Wet-Fire Test: Shoot a minimum of 3 magazines (90 nails) to confirm the tool is functioning correctly. 8.
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