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WG9925823011 TGA Right-Hand Manual Oil Pump (Two-Hole) for Replacement or Repair Sinotruk HOWO FAW Foton Factory Price
Product Name: TGA Right-Hand Manual Oil Pump (Two-Hole)
Part Number: WG9925823011
Product Model: Sinotruk
Product After Sales Service: 3 Months
Product Material: Steel
Product Origin: JINAN
Product Unit: PCS
Product Advantages: high-density, good performance, long service life.
Function of Manual Fuel Pump in Heavy Trucks
A manual fuel pump in heavy trucks, often referred to as a primer pump or hand pump, serves several critical functions in the fuel system, primarily for diesel engines. Its main purposes include:
Bleeding Air from the Fuel System
After fuel filter changes, repairs, or when the fuel tank runs dry, air can enter the fuel lines, causing starting issues or engine stalling. The manual pump allows operators to purge air by pumping fuel through the system until a steady stream is achieved.
Priming the Fuel System
If the engine fails to start due to fuel drain-back or loss of prime, the manual pump restores fuel flow to the injection pump, ensuring proper ignition.
Emergency Fuel Supply
In case of electrical or mechanical failure of the primary fuel transfer pump, the manual pump can temporarily supply fuel to keep the engine running or reach a service location.
Assisting in Filter Replacement
When replacing fuel filters, the pump helps refill the new filter with fuel, reducing cranking time and preventing excessive strain on the starter and batteries.
Testing Fuel System Integrity
Mechanics use it to check for leaks, blockages, or pump functionality by manually operating the system under controlled conditions.
Typical Location & Operation
Usually mounted on the chassis near the fuel filters or primary fuel pump.
Operated by a hand lever or plunger; pumping creates suction that draws fuel from the tank and pushes it toward the engine.
Note: Modern trucks may integrate electric priming systems, but manual pumps remain a reliable backup for critical situations, especially in older or heavy-duty models.
Key Takeaway:
It is a vital maintenance and troubleshooting tool ensuring fuel system integrity, reducing downtime, and providing emergency support for heavy truck operations.
Shandong Tongjia Supply Chain Management Co., Ltd. was established in 2002, and in 2014, it set up a subsidiary Jinan Perfect Power Auto Parts Co. specializes in the sale of heavy-duty trucks and truck parts. The company primarily focuses on distributing Sinotruk, Shacman, Foton truck parts, and various construction machinery components, offering over 200,000 distinct items. Shandong Tongjia emphasizes international trade, exporting goods to Africa, the Middle East, Southeast Asia, South America, Eastern Europe, and other global markets. The company has developed a dedicated and professional technical staff and sales team, establishing a comprehensive management system. Shandong Tongjia is committed to providing customers with high-quality and affordable products. Currently, its offerings are well-received both domestically and internationally, consistently earning praise from customers around the world.
We have worked with many of the world's leading brands,and almost all of our co-operators have been satisfied with our products and services,and have continued their co-operation for many years. We are looking forward to your enquiry,let's cooperate and win together !
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