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Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire. To help prevent possible injury, turn the start switch off when changing fuel filters or water separator elements. Clean up fuel spills immediately. |
| NOTICE |
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Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over any disconnected fuel system components. |
| NOTICE |
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Use a suitable container to catch any fuel that might spill. Clean up any spilled fuel immediately. |
| Parameter | Value |
|---|---|
| Fuel Manifold Pressure | |
| Fuel Transfer Pump Pressure | |
Use this procedure to check the regulated fuel pressure.
| Required Tools | ||
|---|---|---|
| Part Number | Part Name | Qty |
| 1U-5470 | Engine Pressure Gp | 1 |
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| Illustration 1 | g03779828 |
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1U-5470 Engine Pressure Group (1) Pressure indicators (2) Zero adjustment screw (3) Pressure indicator (4) Pressure tap (5) Pressure indicator | |
This tool group has an indicator that is used to read the pressure in the fuel manifolds. The Special Instruction, SEHS8907 is with the tool group.
Test Preparation - Transfer Pump and Manifold Pressure
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| Illustration 2 | g06298690 |
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(6) Fuel line from transfer pump
(7) Plug (unfilter fuel) (8) Plug (filter fuel) (9) Line from fuel filter to fuel manifolds (filtered fuel) (10) Fuel filter | |
- Turn off the engine.
- Slowly loosen plugs (7) and (8).
- Connect the 1U-5470 Engine Pressure Gp into the unfiltered fuel pressure tap (7).
- Connect the 1U-5470 Engine Pressure Gp into the filtered fuel pressure tap (8).
Test Procedure - Transfer Pump and Manifold Pressure
- Start the engine.
- Operate the engine at rated speed and load.
- Note the pressure readings.
If the pressures are not within the specifications, refer to Troubleshooting, "Fuel Pressure is Low".