7256790 Engine Oil Pump for Doosan D34 3.4L Tier 4 Diesel Engine

   The 7256790 is a precision-manufactured oil pump engineered to meet the strict oil-flow requirements of the Doosan D34 platform. This engine is the standard power plant for a wide range of "large-frame" Bobcat loaders and Doosan industrial machinery. Because Tier 4 engines operate at higher internal temperatures to reduce emissions, the 7256790 is designed with high-tolerance gears to maintain consistent oil pressure even when the oil reaches peak operating temperature.

The SPARKLING MACHINERY NEW 7256790 Oil Pump Photo:

Why Choose the SPARKLING 7256790 Oil Pump?

• • • • • • • • • • • • • • • • • • • • • • • • •    - Tier 4 Optimized: Designed to provide the high-flow volume necessary for engines equipped with advanced emissions and turbocharging systems.

                                                •    - Precision Gear Tolerances: Minimizes internal pressure drops, ensuring that the furthest components (like turbo bearings) receive immediate lubrication upon startup.

                                                •    - Durable Housing: Cast from high-strength materials to resist the mechanical stresses and vibrations of industrial diesel operation.

                                                •    - Direct OEM Fit: Replaces part number 7256790 exactly, ensuring perfect gear mesh with the engine's timing system.

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Q&A Section

Q1: How do I know if my 7256790 oil pump is failing?

A: Warning signs include a low oil pressure light on the dashboard, a "ticking" sound from the valve train, or the machine entering "Limp Mode" due to oil pressure sensor codes. If the engine temperature begins to climb without a coolant leak, it may be due to poor oil circulation.

Q2: Should I replace the oil pressure relief valve when I replace the pump?

A: Many modern pumps, including those for the D34, have the relief valve integrated. However, it is always a best practice to inspect the entire oil circuit and ensure the oil pickup screen is completely clean before installing the new 7256790.

Q3: Is the 7256790 pump compatible with all D34 engines?

A: While it is the standard for most Tier 4 D34 engines, always verify your engine serial number. Some variations in oil pan depth or auxiliary drive configurations may require a specific pump part number.

About SPARKLING MACHINERY:
   - Founded in 2013, SPARKLING focuses on high-quality excavator parts across hydraulics, undercarriage, engines and electrical systems. We prioritize stability, precision and continuous service, offering worldwide distribution, tailored solutions and strict QC to help customers reduce cost and increase uptime.

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