Genuine 2P3425 PINION-SECONDARY REDUCTION for Caterpillar (CAT) Machinery
Welcome to Guangxi Huayang Engineering Machinery Equipment Co., Ltd.! We are your trusted source for high-quality spare parts for a wide range of construction machinery, including leading brands like Caterpillar (CAT) and Komatsu. Our extensive inventory ensures that you can find the exact component you need to keep your equipment running smoothly and efficiently.
Today, we are proud to feature the genuine 2P3425 PINION-SECONDARY REDUCTION, a critical component in the power transmission system of various CAT machines.

Key Advantages of the CAT 2P3425 Pinion-Secondary Reduction
Enhanced Durability and Reliability: Manufactured to Caterpillar's stringent standards, ensuring long-lasting performance even in demanding work environments.
Optimized Power Transmission: Designed for efficient transfer of power from the engine to the final drive, contributing to the overall performance of your machinery.
Perfect Fit and Easy Installation: As a genuine CAT part, the 2P3425 guarantees a precise fit, simplifying the installation process and reducing downtime.
Improved Machine Efficiency: A properly functioning pinion-secondary reduction contributes to the optimal operation and fuel efficiency of your CAT equipment.
Product Uses and Applicable Machine Models
The 2P3425 PINION-SECONDARY REDUCTION is a vital part of the final drive system in several Caterpillar machines. Its primary function is to further reduce the rotational speed and increase the torque output from the transmission before it reaches the tracks or wheels.
This component is commonly found in the following CAT models:
Caterpillar D6 Series Track-Type Tractors: Including models like the D6R and D6T. These bulldozers are widely used in construction, mining, and forestry for tasks such as earthmoving, land clearing, and grading. For instance, a Caterpillar D6R bulldozer might be used on a construction site to level ground before building.
Caterpillar D7 Series Track-Type Tractors: Such as the D7R and D7E. These larger bulldozers are employed in heavy construction and mining operations for moving large volumes of material. An example would be a Caterpillar D7E working in a quarry to push overburden.
Caterpillar 953 Series Track Loaders: Including models like the 953C and 953D. These versatile machines combine the digging power of a loader with the mobility of a track-type tractor, often used for material handling and excavation in confined spaces. A Caterpillar 953D could be used at a landscaping project to load and move soil and gravel.
Guangxi Huayang: Your Partner for Quality Construction Machinery Parts
At Guangxi Huayang Engineering Machinery Equipment Co., Ltd., we specialize in providing a comprehensive range of spare parts for Komatsu and Caterpillar construction equipment. Our main products include undercarriage parts (such as track rollers, carrier rollers, sprockets, idler groups, and track shoes), hydraulic system components (including hydraulic pumps, hydraulic motors, control valves, and hydraulic cylinders like bucket cylinders and boom cylinders), transmission and power components (like transmissions, gears, and engine assemblies, including Cummins engine parts), and various wear parts (such as bucket teeth, track chains, pins and bushings, and high-strength bolts).
We are committed to offering high-quality products and excellent customer service to ensure your machinery operates at peak performance.
Frequently Asked Questions (FAQ)
Q: How can I determine if the 2P3425 Pinion-Secondary Reduction is the correct part for my machine?A: The best way to ensure correct fitment is to check your machine's parts manual for the specific part number. You can also contact our knowledgeable sales team with your machine's model and serial number, and we will be happy to assist you.
Q: What are the common signs of a failing pinion-secondary reduction?A: Common signs include unusual noises (such as grinding or clicking) coming from the final drive area, loss of power or speed, and excessive heat buildup in the final drive housing. If you notice any of these symptoms, it's crucial to inspect the component promptly.
Q: What maintenance should be performed on the final drive system?A: Regular maintenance includes checking and maintaining the correct oil level in the final drive housing, inspecting for leaks, and ensuring that all seals are in good condition. Following the manufacturer's recommended service intervals is essential for prolonging the life of these critical components.
Troubleshooting, Maintenance Advice, and Maintenance Tips
Troubleshooting: If you suspect an issue with the pinion-secondary reduction, carefully listen for unusual noises while the machine is operating. Check for any signs of oil leakage around the final drive. If possible, inspect the gear teeth for wear or damage after draining the oil.
Maintenance Advice: Always use the recommended type and grade of oil for your machine's final drive. Ensure that the oil level is correct as per the manufacturer's specifications. Regular oil changes are crucial to remove contaminants and prevent premature wear.
Maintenance Tips: Conduct daily visual inspections of the final drive area for any signs of damage or leaks. Pay attention to any changes in the machine's performance or unusual sounds. Promptly address any minor issues to prevent them from escalating into major problems.
Multilingual Glossary of Spare Parts
| English | Chinese | Russian | Installation Location | Example Keyword |
|---|
| Track Roller | 支重轮 (Zhīzhòng lún) | Опорный каток (Opornyy katok) | Undercarriage | 卡特彼勒CAT 320D 支重轮 |
| Hydraulic Pump | 液压泵 (Yèyā bèng) | Гидравлический насос (Gidravlicheskiy nasos) | Hydraulic System | 小松Komatsu PC200-8 液压泵 |
| Idler | 引导轮 (Yǐndǎo lún) | Направляющее колесо (Napravlyayushcheye koleso) | Undercarriage | 卡特彼勒CAT 336D 引导轮 |
| Control Valve | 分配阀 (Fēnpèi fá) | Распределительный клапан (Raspredelitel'nyy klapan) | Hydraulic System | 小松Komatsu PC300-7 分配阀 |
| Sprocket | 驱动轮 (Qūdòng lún) | Ведущая звездочка (Vedushchaya zvezdochka) | Undercarriage | 卡特彼勒CAT D8R 驱动轮 |
| Hydraulic Cylinder | 液压油缸 (Yèyā yóugāng) | Гидравлический цилиндр (Gidravlicheskiy tsilindr) | Hydraulic System | 小松Komatsu PC400-8 液压油缸 |
| Carrier Roller | 托链轮 (Tuō liàn lún) | Поддерживающий каток (Podderzhivayushchiy katok) | Undercarriage | 卡特彼勒CAT 323D 托链轮 |
| Engine Assembly | 发动机组件 (Fādòngjī zǔjiàn) | Сборка двигателя (Sborka dvigatelya) | Engine Compartment | 小松Komatsu D85EX-15 发动机组件 |
| Track Shoe | 履带板 (Lǚdài bǎn) | Гусеничная пластина (Gusenichnaya plastina) | Undercarriage | 卡特彼勒CAT 349E 履带板 |
| Bucket Tooth | 斗齿 (Dǒu chǐ) | Зуб ковша (Zub kovsha) | Bucket | 小松Komatsu PC220-8 斗齿 |