Description
Product Overview
The 4P9830 plunger is a core pressure component of the diesel fuel supply system. It relies on a gear structure to cooperate with the transmission components of the engine to complete the reciprocating oil pumping, continuously delivering stable high-pressure fuel to the fuel injection components. It is suitable for engineering equipment that operates under long-term high-load conditions. It can replace worn-out, leaking, or jammed old plunger components, restoring the overall fuel supply pressure of the machine, ensuring a continuous and stable power output of the equipment.
Unique features of the single product
Integrated gear-driven end, with tight transmission engagement
The end is formed as a single piece with a toothed transmission structure, with sufficient tooth groove depth, and a close fit with the transmission components of the engine. During operation, it is less likely to slip or skip teeth, and there will be no fluctuations in fuel supply pressure. It maintains stable transmission for long-term continuous operation.
Thickened multi-layer pressure-reducing springs, with uniform rebound force
The matching widened helical springs have sufficient steel toughness. During the reciprocating motion of the plunger, the rebound is synchronous without lag, and it is less likely to be compressed or deformed under high-pressure conditions. It maintains stable pumping stroke for a long time and reduces pressure attenuation faults.
Multiple-stage segmented plunger rings, with strong pressure-bearing and sealing performance
The plunger body is combined with multiple ring-shaped pressure-bearing structures, which distribute the oil pressure impact force in segments. The high-pressure fuel is less likely to leak through the joint gaps, and it can maintain internal pressure stability even under long-term high-temperature working conditions, reducing fuel loss.
Overall hardened alloy material, wear-resistant and anti-wear
The entire set of plunger, spring, and gear end are all hardened. The wear rate during the reciprocating friction of the plunger and the continuous engagement of the gear is slow. It has a longer service life in dusty and high-temperature construction environments.
Standard integrated molding structure, no additional adjustment required
The entire set of components is a complete assembly product. The gaps between each component are factory-matched, and after installation, there is no need to separately adjust the stroke pressure. It can be directly installed in the engine and put into use, significantly reducing maintenance and debugging time.
Applicable scenarios
It is compatible with the corresponding series of diesel power units and is mainly used in wheel loaders, fixed power generation units, and heavy construction machinery in mines. It is suitable for the maintenance and replacement of the fuel supply systems of heavy-duty equipment used in construction sites, factory areas, and outdoor environments. Product basic parameters
Product Name: High-pressure Fuel Plunger Assembly
Part Number: 4P9830
Main Material: Quenched alloy steel, high-strength pressure-bearing spring
Structural Feature: Gear-driven end, segmented plunger ring, externally enlarged spring
Applicable Working Conditions: Continuous heavy load, high temperature, dusty outdoor industrial environment
Product Condition: New and fully assembled, completed with oil pressure matching test
Packaging: Neutral shock-absorbing cushion packaging, resistant to bumps and crushes, suitable for cross-border sea and land transportation
