How to Ignite the Fuel System Assisted Start of DoosanDX340LC Crawler Excavator Engine

This article introduces how to ignite the fuel system to assist in starting when the DoosanDX340LC Crawler Excavator engine does not start.

2023.07 Doosan DMS-5 Data Monitoring System Diagnostic Software

If engine does not start, the fuel system may need priming.

Prime the fuel system using the following procedure:

1. Stop Engine.

2. Open left side door and then there is fuel filter.







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3. Loosen plug (1, Figure 21) on top of fuel filter head.

4. Pump hand operated primer pump (2, Figure 21) by the

fuel injection pump. Pump primer until fuel is present at

plug hole in fuel filter head.

5. Tighten plug in fuel filter head.

6. Continue to pump primer pump until a strong resistance is

felt.

7. Start engine and look for signs of leaks.
Repeat procedure if necessary.

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