Engine Parts/Oil Pumps and Lubrication

Products & Range Coverage
A&S MACHINERY CO., LTD. delivers an extensive inventory of specialized oil pumps and lubrication components within our engine parts catalog to support diverse heavy-duty equipment:
• Machine & Engine Series Compatibility: Engineered for a broad range of Komatsu heavy-duty engines, our parts ensure exact gear clearances, flange layouts, and pressure thresholds for a 100% perfect match and factory-grade lubrication performance.
• Complete Oil Pumps & Lubrication Range: 1. Heavy-Duty Oil Pump Assemblies: High-strength wear-resistant cast iron pump bodies featuring precision gear or rotor designs to deliver stable oil flow and pressure under high cold-start viscosity and low hot-idle conditions; 2. Engine Oil Coolers & Cores: Units featuring exceptional heat exchange efficiency and high-pressure pulse resistance to effectively control oil operating temperatures and prevent thermal breakdown; 3. Relief & Bypass Valves: Precision valves and regulating springs designed to ensure main oil gallery supply continuity during lubrication circuit resistance changes; 4. Piston Cooling Nozzles & Oil Lines: Precision-aligned nozzles and high-pressure lines targeting internal piston cooling galleries for efficient thermal reduction and load balancing.
• OEM & Heavy-Duty Aftermarket: We offer certified original equipment manufacturer Komatsu lubrication components alongside rigorous bench-tested aftermarket parts, delivering exceptional reliability and extended service lifespan at a cost-effective price point for global clients.

Supply Chain & Logistics
We maintain a robust operational infrastructure designed to support global oil pump and lubrication system component procurement through direct supply channels, delivering reliable stock availability and rapid dispatch to build trust with international equipment owners and repair facilities.
• Massive Inventory and Part Number Cross-Reference: We maintain large-volume stock of hundreds of differing specifications of Komatsu mainstream heavy-duty excavator and bulldozer oil pumps, coolers, and pressure relief valves. Backed by barcode-enabled intelligent warehousing and Komatsu parts databases, we guarantee precise matching and immediate dispatch upon order confirmation to minimize jobsite downtime caused by lubrication system warning alarms.
• Flange Protection and Crated Packaging: We implement specialized industrial packaging standards for oil pumps and oil coolers featuring precision-machined cast aluminum or cast iron flanges and internal cooling fins vulnerable to flange distortion, interface cracking, or internal particulate trapping during rough handling, utilizing customized high-hardness plastic protective covers, fully sealed vapor corrosion inhibitor anti-rust vacuum plastic wrapping, high-density molded foam slot fixation, and specialized fumigated solid wood export heavy-duty crates to ensure components do not suffer interface deformation, collision damage, or rust during transcontinental ocean or air transit.
• Consolidated Sourcing: We support overseas clients by consolidating oil pumps or coolers alongside matching engine oil filters, overhaul gasket kits, lubrication line cleaning agents, and oil cooler mounting seals into precise bundled shipments, maximizing container space utilization and significantly reducing international freight costs for overseas machine maintenance facilities.

Engineering Solutions & Technical Support
Our technical framework focuses on resolving field-level operational challenges to eliminate equipment downtime, moving beyond simple parts distribution to deliver comprehensive engineering and service capabilities for power unit lubrication assets.
• Application-Specific Durability Solutions: We address common field issues in extreme jobsite environments, such as open-pit quarries involving continuous high-intensity overload operations and high-heat dusty mines where factory oil coolers frequently crack and mix fluids due to thermal fatigue stress and oil pump gear faces wear rapidly. We also provide professional engineering upgrades, including thickened high-pressure pulse resistant cooler cores and wear-resistant reinforced high-flow oil pumps.
• Troubleshooting and Maintenance Guidelines: We address common user concerns regarding Komatsu excavator hot-engine oil pressure alarms, unexplained black oil contamination in cooling water, or failure of new oil pumps to build initial pressure by providing professional diagnostic and replacement guidance. This includes emphasizing the mandatory execution of a system flush protocol to perform high-pressure circulating cleans on main engine oil galleries and eliminate residual metal particles from previous bearing failures before installing new components to prevent secondary damage, alongside instructing technicians to fill pump chambers with clean engine oil and manually rotate the crankshaft during installation to prevent dry-start scoring and loss of priming.
• Expert Technical Support and Safety Guidelines: We provide technical documentation covering Komatsu oil pressure standard value reference tables, relief valve adjustment shim specifications, and lubrication line bolt tightening torques, assisting overseas technical personnel in maintaining standardized installations.

Call to Action & User Experience
Optimize your machinery lubrication reliability and pressure stability today by utilizing our interactive tools placed across strategic positions on our platform.
• Multi-Dimensional Intelligent Search and Specification Filtering: Benefit from advanced search functions supporting fast product filtering by Komatsu machine model (such as PC200-8, PC360-7, WA380, or D85), engine platforms (such as 6D102, SAA6D107, or SAA6D125), component categories (such as oil pumps, oil coolers, relief valves, or lubrication lines), or original equipment manufacturer part numbers to lock onto target products instantly.
• RFQ and Lubrication System Quotation: Access our fast-response interactive channels providing one-click bill of materials uploads for fleet Komatsu machinery lubrication system spare replacement lists to receive bundled assembly quotations and international logistics freight estimates, fulfilling workshop emergency repairs and engine overhaul lubrication upgrade procurement requirements.
• Consultation and Support: Utilize our around-the-clock professional technical support channels staffed by senior Komatsu machinery engine lubrication and fluid transmission experts to assist overseas clients in verifying compatibility for legacy non-standard lubrication lines, cooler modifications, or aftermarket replacement selections, ensuring cross-border procurement runs error-free.