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Diesel Centar
1 418 502 013
1 418 502 013
Couldn't load pickup availability
| Bosch Part Number | 1 418 502 013 |
| Full Series Designation | 1 418 502 XXX (Part of the series for A, PFR, and similar pumps) |
| Component Type | Delivery Valve (Features a Pressure Relief/Unloading Function). |
| Primary Application | Bosch PF and PFR Pumps (Single-cylinder/Distributor pumps with fixed stroke) |
| OEM Linkages | Commonly used in engines by: Lombardini, Ruggerini, Hatz, VM Motori (small to medium industrial/agricultural engines). |
| Critical Function (1) | Pressure Relief (Residual Pressure Unloading): Its primary task is to rapidly reduce the fuel pressure in the high-pressure line to the nozzle/injector after the injection event ends, preventing secondary injection and nozzle dribbling. |
| Critical Function (2) | Defining End of Injection: The volume of the return section (relaxation cone) of the valve is critical in determining the exact moment the pressure in the chamber drops and injection ceases. |
| Service Aspect (1) | Replacement Criteria: Its precision is critical. If worn (on the seat), it must be replaced as a matched pair (valve and seat) because it is a calibrated assembly. It is not repairable/reconditionable. |
| Service Aspect (2) | Nozzle Replacement Check: When replacing only the nozzle (without replacing the valve), it is mandatory to check for leaks or spraying after injection, as a faulty delivery valve causes spraying and late cut-off. |
| Testing | Tested exclusively on a calibrated injection pump test bench by measuring delivery volume and pressure stability across the pump's entire operating range. |
