Product Overview

The 5J4502 (also known as 5J-4502 or CA5J4502) Hydraulic Oil Pump Cartridge is a critical component designed for optimal performance in Caterpillar (CAT) heavy equipment. This high-quality vane pump cartridge ensures efficient hydraulic fluid delivery, crucial for the smooth and powerful operation of your machinery. Engineered for durability and reliability, it meets stringent specifications to provide long-lasting service in demanding work environments.

Product Parameters

• Part Numbers: 5J4502, 5J-4502, CA5J4502

• Capacity: Approximately 50 Gallon (referring to the pump's hydraulic system capacity/flow rate)

• Type: Hydraulic Vane Pump Cartridge

• Material: High-grade, durable components for extended wear life

• Compatibility: Engineered for seamless integration with Caterpillar hydraulic systems

Key Advantages & Selling Points

• Optimized Performance: Ensures efficient and consistent hydraulic fluid flow, critical for precise machine control and power delivery.

• Exceptional Durability: Constructed with robust materials to withstand harsh operating conditions and reduce wear and tear.

• Reliable & Trusted Quality: Manufactured to meet or exceed OEM specifications, ensuring a dependable replacement part.

• Extended Service Life: Designed for longevity, minimizing downtime and maintenance costs.

• Seamless Integration: Perfectly fits specified Caterpillar models, facilitating easy installation and compatibility with existing hydraulic systems.

Applicable Equipment

This 5J4502 / 5J-4502 hydraulic oil pump cartridge is compatible with a range of Caterpillar heavy machinery, particularly:

• Wheel Loaders: CAT 980, 980B, 977K, 977L, 988

• Dozers: CAT 824, 824B, 825B, 826B, 834, 835

• Scrapers: CAT 621B

It also fits Caterpillar Engines such as: 3306, C15, 3406, 3406E.

Application Scenarios & Case Analysis

Caterpillar Wheel Loaders, Dozers, and Scrapers equipped with reliable hydraulic systems are indispensable across various industries. The 5J4502 hydraulic pump cartridge plays a vital role in enabling these machines to perform critical tasks efficiently.

• Construction Sites: Wheel loaders are heavily used for material loading and transporting (e.g., sand, gravel, dirt), ground clearing, and assisting with demolition. A well-functioning hydraulic pump ensures the rapid and precise movement of the bucket for digging, loading, and carrying.

• Mining & Quarrying: These machines are essential for loading raw minerals onto conveyor belts, creating and maintaining stockpiles, and site cleanup. The hydraulic system powers the heavy lifting and precise positioning required in these high-demand environments.

• Waste Management: In landfills and recycling centers, wheel loaders transfer and sort various types of waste. The hydraulic pump ensures consistent power for continuous operation and handling diverse materials with specialized attachments.

• Agriculture & Forestry: Used for moving logs, timber, mulch, and soil, as well as ground tilling and clearing. Reliable hydraulics enable the efficient operation of various attachments like grapples and root rakes.

• Road Construction: For spreading sand and gravel, leveling, and grading roads, the precise control offered by a robust hydraulic system is paramount for achieving smooth and even surfaces.

Case in Point: In a large-scale quarry operation, a CAT 988 Wheel Loader's hydraulic pump began showing signs of wear, leading to reduced lifting power and slower cycle times. Replacing the worn cartridge with a new 5J4502 restored the machine's full hydraulic pressure and flow, significantly improving its loading efficiency and reducing operational delays, thus contributing to higher productivity and lower operational costs.

Related Similar Products

Beyond the 5J4502 vane pump cartridge, other hydraulic components and pump types are essential for various Caterpillar equipment:

• Hydraulic Gear Pumps: Often found in open-center systems, suitable for lower-pressure, higher-flow applications. Used in various CAT excavators, loaders, and dozers (e.g., 1U1779, 1038264, 1093420 for CAT 980C, 320, 988F series).

• Hydraulic Piston Pumps: Known for higher efficiency and pressure capabilities, available in fixed or variable displacement. Commonly used in larger CAT equipment and more demanding applications (e.g., 1U3840 for CAT 992C, 1053635 for CAT 980G series).

• Other Vane Pumps: Similar to the 5J4502, other vane pump models exist for different CAT machines, featuring robust designs for various duty cycles (e.g., 1U2824 for CAT 613C, 1003414 for CAT 924F series).

• Hydraulic Motors: Complementary to pumps, converting hydraulic energy into mechanical motion for functions like driving wheels or operating attachments.

• Hydraulic Cylinders & Valves: Essential for linear motion and controlling fluid direction and pressure within the hydraulic circuit.

These components are designed to work together within Caterpillar's holistic hydraulic systems, ensuring optimal performance across their extensive range of excavators, dozers, loaders, motor graders, and other heavy equipment.

Installation & Maintenance: Common Issues & Solutions

Proper installation and regular maintenance are crucial for the longevity and performance of hydraulic oil pump cartridges and the overall hydraulic system. Here are common issues and their solutions:

• Issue: Pump Not Delivering Fluid / Low Flow                
  Causes: Incorrect rotation direction, broken drive shaft/key, blocked intake pipe, high oil viscosity, air leaks in intake, low fluid level, worn pump parts.                
  Solutions: Check pump rotation (arrow on body), inspect drive shaft, drain/replace fluid with proper viscosity, check/tighten intake connections, ensure fluid level is above intake, replace worn rotor sets/parts.

• Issue: Low Hydraulic System Pressure                
  Causes: Relief valve set too low, excessive internal leakage due to worn pump parts.                
  Solutions: Adjust relief valve setting with a pressure gauge, replace worn cartridge/pump parts.

• Issue: Excessive Pump Noise (Cavitation)                
  Causes: Clogged intake strainer/pipe, air in fluid, defective bearings.                
  Solutions: Clean or replace intake strainer/pipes, check for air leaks and bleed system, replace defective bearings. Ensure fluid is clean and free of contamination.

• Issue: Pump Shaft Seal Leaking                
  Causes: Worn/damaged seal, excessive pressure on seals.                
  Solutions: Replace the shaft seal, check for restrictions or excessive line length on externally drained pumps.

• General Maintenance Practices:                
  Regularly check hydraulic fluid level, color, and viscosity. Replace hydraulic filters at recommended intervals. Inspect all seals, hoses, and connection points for leaks. Ensure proper warm-up time for the system to achieve optimal oil temperature and viscosity. Keep the hydraulic system and surrounding area clean to prevent contamination.