Komatsu 1439905H92 Gear Shift
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The Komatsu 1439905H92 is an electronic transmission shifter used on GD530A/AW‑2B/2C motor graders and similar heavy‑equipment models. Common failure points for this class of shifters include worn solenoid contacts, degraded PCB traces from vibration or moisture ingress, and faulty shift‑position sensors that trigger error codes or loss of gear engagement. Begin troubleshooting by verifying the 24 VDC power supply to the shifter module, inspecting the PCB for burn marks or corrosion, and checking the shift‑position sensor signals with a multimeter; then review any diagnostic trouble codes logged in the machine’s control system.[oss-gpt-20b] |
Need your Komatsu repaired or tested?
We specialize in the repair and refurbishment of high-end industrial control electronics and power systems like this unit.
- ⚙️ Fast Diagnostics – Same-day evaluation available
- 🔁 Reliable Turnaround – Most jobs ship within 5–10 business days
- 🧰 Expert Technicians – Decades of board-level experience
- ✅ 1-Year Warranty – Every repair fully guaranteed
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- ✅ 1-Year warranty on completed repairs
Free Estimates • Industrial-grade testing • 1-Year Warranty • Nationwide Service
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🚑Shop Location🛠️
Industrial Electronic Repair
145 Rockwell Place Ct
Tobaccoville, NC 27050
🚑 Rush repair shipments only — no walk-ins.
📞Phone
📦Mailing Address🚛
Industrial Electronic Repair
931-E S. Main St #204
Kernersville, NC 27284
📦 Mailing Address (for invoices or shipped repairs)
No walk-ins accepted.