Step-by-Step Guide: How to Use a Mini 2-Jaw Gear Puller Safely 1. Preparation & Tool Inspection Before using the puller, inspect the jaws, the center screw, and all parts for wear, cracks, or damage as recommended by safety experts. Lubricate the central screw and jaw pivots with a light oil to ensure smooth operation and reduce friction. Secure your workpiece on a stable surface—...

What Is an Armature Bearing Puller & Why It’s Needed An armature bearing puller is a specialist tool used to remove bearings or gears fitted onto the shaft of an armature (rotor) in electric motors, automotive alternators, power tools, and other electrical devices. Unlike general-purpose pullers, it’s made for tight clearances and the delicate structure of motor armatures. At DNT To...

How to Use a Bearing Separator Safely & Effectively Removing tightly-fitted bearings, gears or pulleys can be a tricky job — one wrong move can damage the shaft, housing, or even injure the operator. That’s why knowing how to use a bearing separator safely and effectively is crucial. In this article we’ll walk you through step-by-step how to select the right tool, prepare your workspace,...

Applications of Parallel Pullers: From Small Workshop to Heavy IndustryIntroductionWhen it comes to removing press-fitted components such as bearings, gears, pulleys or sleeves, the type of puller you select has a direct impact on efficiency, safety and cost. Among the many tool types, parallel pullers (also known as parallel-jaw pullers) are increasingly favoured across many sectors for their enh...

Parallel Puller vs Standard Jaw Puller: Key Differences & Advantages When selecting a puller tool for removing press-fitted components such as bearings, gears, sleeves or pulleys, the right choice can make the difference between a smooth job and a costly mistake. Two widely-used styles are the standard jaw puller (commonly 2-jaw or 3-jaw) and the more specialist parallel puller ...

Maintenance, Troubleshooting & Service Tips for Hydraulic Pullers Hydraulic pullers are powerful tools for removing press-fitted components like bearings, gears, and sleeves. But to keep them working reliably, proper maintenance and troubleshooting are essential. Below are best practices, fault diagnosis workflows, and service tips — along with how DNT Tools supports users. 1....

Types of Hydraulic Pullers & Their Applications: 2-Jaw, 3-Jaw, Internal, External Hydraulic pullers are essential tools for removing press-fitted or tightly mounted parts like bearings, gears, sleeves, or pulleys. Because they can exert high controlled force with precision, they often outperform purely mechanical pullers in heavy or delicate applications. At DNT Tools (宁波东宁工具厂 /...

Step-By-Step: How to Use a Three Leg Oil Filter Wrench Safely By DNT Tools · Ningbo Dongning — we focus on quality tools that are reliable and safe. Using a three-leg (claw / 3-jaw) oil filter wrench correctly ensures you remove filters without damage. About Us Understanding the Three Leg / Claw Type Wrench According to Wikipedia’s oil-filter wrench page, t...

Types of Oil Wrenches For Automobiles By DNT Tools · Ningbo Dongning — as a precision tool manufacturer, we understand the need for the right oil filter wrench in different scenarios. Learn more: About Us. Why You Need Specialized Oil Wrenches Oil filters are smooth, oily, and often hard to reach. Using a proper wrench helps grip, torque, and remove them reliably—avoiding slip or dama...

Adjustable Torque Wrench: What It Is & Why It’s Essential By DNT Tools · Ningbo Dongning — specialists in precision hand tools including torque wrenches, sockets, hydraulic pullers, etc. Over years of OEM/ODM experience, we ensure accuracy, durability, and reliability. Learn more: About Us. What Is An Adjustable Torque Wrench? An adjustable torque wrench lets you set a spec...

Why You Should Invest in High-Quality Snap Ring Pliers By DNT Tools · Ningbo Dongning — specialists in precision hand tools including snap ring pliers, sockets, hydraulic pullers, etc. Learn more about us: About Us. What Defines a “High-Quality” Snap Ring Plier Top tools use durable materials like hardened carbon steel or alloy steel. These resist wear and retain shape unde...

Injector Nozzle Socket Compatibility Chart: Engines, Sizes, and Socket Fit By DNT Tools · Ningbo Dongning — professional automotive tool manufacturer, specializing in high precision injector nozzle sockets and related tools. Learn more: About Us. What This Guide Covers Common engine models and their corresponding injector socket sizes. Drive types, depth requirements, and inte...

Common Mistakes When Using Injector Nozzle Sockets & How to Avoid Them As a professional automotive tool manufacturer with over 20 years of experience, DNT Tools is committed to producing high-quality, precise, and durable tools—including injector nozzle sockets designed to meet strict industry standards. Below are common errors mechanics make with injector nozzle sockets, and how to avoid ...

Safety Features & Operational Specs You Need to Check When choosing a cylinder liner puller, safety-meets-performance is key. Here's what top models offer—and how DNT Tools exceeds the standard. VEVOR – Automatic Force Adjustment & Ergonomics The VEVOR liner puller includes an automatic force adjustment system: sensors monitor resistance in real time a...

Selecting the Right Cylinder Liner Puller — Specification Checklist Choosing the proper puller ensures efficient, damage-free liner removal. Here’s a spec-based guide drawing on top tools in the field. Bore Diameter Compatibility The OTC Universal Puller covers **3-7/8″ to 6-1/4″** bores—ideal for heavy-duty liners. The VEVOR kit supports **75–138 mm** line...

Definition & Purpose What Is a Cylinder Liner Puller & Why You Need One A cylinder liner puller is a specialized tool for safely extracting cylinder liners from engine blocks, preserving block integrity and simplifying maintenance. Purpose & Benefits Safe extraction: Removes liners without damaging the engine block, v...

Quick, Repeatable, Leak-Free Quick Installation Workflow Using an Oil Seal Install Tool Speed doesn’t have to sacrifice reliability. The workflow below distills best practices from leading seal guides into a fast, repeatable process you can apply in the shop or field—minimizing lip damage, cocking, and costly rework. Phas...

Ultimate Guide: What Is an Oil Seal Install Tool & Why You Need One Discover the essential role of an oil seal install tool—what it is, why it matters, and how to use it correctly to avoid costly leaks and downtime. Plus, learn how DNT Tools brings precision solutions to your workshop. What Is an Oil Seal Install Tool? An oil seal install tool...

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Complete Guide to Ball Joint Extractor Tools Ball joint extractors provide clean, controlled removal of worn joints without risking damage to adjacent suspension parts. This comprehensive guide walks you through tool types, methods, and key tips for safe, efficient suspension repair. Types of Extractor Tools Press Kits—Hydraulic or sc...

Essential Tools for Gearbox Disassembly & Assembly Whether you’re a professional transmission tech or a hands-on DIYer, having the right tools prevents damage and speeds up gearbox work. Below are the core tools and workshop practices gathered from industry guides and rebuild specialists. Core Hand Tools Socket & ratchet sets (metric...

Cam Chain Breaker & Riveting Tools Explained: Types, Uses & Benefits Discover professional-grade cam chain breaker & riveting tools, their types, uses, and how DNT Tools delivers unmatched quality and customization for mechanics worldwide. 1. Tool Types & Core Components Compact Cam–Specific Kit (Lossa Engineering): Lightweight alloy tool set includes body, handle, push pins, and manual...

Ultimate Guide to Choosing the Right Oil Filter Wrench for Your Vehicle At DNT Tools, we specialize in premium tools designed for professional and heavy‑duty applications. Your oil change routine begins with choosing the right oil filter wrench—this guide walks you through selecting the perfect tool for your vehicle, while showcasing how DNT Tools delivers durability, precision, and global s...

Buying Guide: What to Look for in a Quality Bearing Puller Choosing the right bearing puller is essential for efficient, safe, and damage-free removal of bearings. Whether you're a DIY mechanic or a heavy-duty truck repair professional, understanding what makes a bearing puller reliable will ensure better performance and durability. 1. Material & Build Quality ...

Mechanical vs Hydraulic Bearing Pullers: Pros & Cons Bearing pullers are essential tools in automotive and heavy-duty truck maintenance, allowing for the safe and efficient removal of bearings. When it comes to choosing the right type, mechanical and hydraulic pullers offer distinct advantages. This guide explores their differences to help you make an informed d...

Ultimate Guide to Bearing Pullers: Types & Applications Bearing pullers are essential tools in automotive, heavy machinery, and industrial maintenance. They allow technicians to remove gears, pulleys, and bearings safely and efficiently, without causing damage to the shaft or surrounding components. Whether you're a seasoned mechanic or a fleet service provider, having the right bearing ...

How to Choose the Right Bearing Puller for Your Job Whether you're a fleet mechanic or a DIY repair specialist, the right bearing puller can make your job faster, safer, and more precise. In this guide, we’ll walk through the main types of bearing pullers, how to choose the best one, and why NBDN Tools is the trusted name in heavy-duty maintenance tools. Types of Bea...

Precision Valve Service Tools for Weichai Engines Maintaining optimal performance in a Weichai diesel engine depends on the quality of tools used during valve servicing. From valve lock clamps and seat press tools to precision guide installation kits, the right tools ensure engine longevity and reduce costly downtime. At NBDN Tools, we specialize in heavy-duty truck and diesel engine service too...

When it comes to semi-truck maintenance, having the right tools is not a luxury—it’s a necessity. Whether you manage a fleet or run your own repair shop, these ten heavy-duty tools are the backbone of safe, efficient, and accurate truck service. This list, based on top industry sources and expert insights, also showcases how NBDN Tools is helping truck professionals worldwide with high-quality r...

Top ZF 16S Transmission Tool Kits Compared: OEM vs Aftermarket The ZF 16S transmission is widely used in commercial trucks for its durability and efficiency. However, maintaining or overhauling this gearbox requires specialized tools to ensure precision and safety. Whether you’re an independent workshop or a fleet service provider, choosing the right tool kit—OEM or aftermarket—can make a ma...

Introduction: Why the Right Axle Tool Matters Whether you're a professional mechanic or a passionate DIYer, choosing the right axle tool can mean the difference between a smooth repair and a costly mistake. Axle components—whether in CV joints, hub assemblies, or bicycle axles—require precision tools designed to handle specific torque, force, and fitment challenges. At DN Tools, we’ve spen...

Being a professional truck driver in 2025 means more than just hitting the road — it’s about being prepared for anything. At NBDN Tools, we’re committed to providing reliable, innovative truck tools for heavy-duty applications. Here's our curated list of the Top 10 Must-Have Tools for truckers today. 1. Heavy-Duty Multi-Tool Set Every trucker should carry a mult...

How ZF Gearbox Repair Works: Step-by-Step Guide ZF gearboxes are widely used in commercial trucks, heavy-duty vehicles, marine equipment, and construction machinery due to their reliability and advanced mechatronic systems. However, like all mechanical systems, they require periodic repair or overhaul to ensure continued performance and safety. In this blog, we’ll walk you through a deta...

Why You Need Special Tools for the ZF 16S Gearbox The ZF 16S gearbox features complex internal components, including a heavy planetary gear set, tapered roller bearings, and precision-aligned shafts. Using improper tools during disassembly or reinstallation may cause misalignment, component damage, or even unsafe operation post-repair. That's why using specialized tools — such as shaft extr...

Why You Need the Right Tools for ZF Transmission Repairs ZF transmissions require high-precision tools to ensure safe and efficient repairs. From passenger cars to heavy-duty trucks, using the correct tools preserves the integrity and performance of the gearbox. What Makes ZF Transmissions Unique ZF 8HP automatic (BMW, Jeep, Audi) ZF 6HP automatic ZF 16S & 8S Ecosplit for t...

With more and more truck models, engines are becoming more and more "sophisticated", which requires truck drivers to strengthen daily maintenance, extend the life of the engine, and reduce use failures. This issue of DNT editor brings you the precautions for the maintenance of Sinotruk D10B diesel engines.Operation precautions:For the safety and comfort ...

Carbon steel is often used as the material for large vehicle maintenance tools, mainly because it has many advantages in terms of performance, cost, and processability, and is particularly suitable for heavy-duty maintenance scenarios that bear large loads and large torques. The following are the specific reasons:1. High str...

Nowadays, the weather is cold and windy in winter. If people don't take good care of their bodies, they will have problems. Not to mention the car outside in the wind, sun and cold weather, oil leakage is also very common. The following editor will share with you the reasons for the crankshaft rear oil seal leakage. Let's take a look~① The crankshaft oil seal did not use non-petroleum-based lubric...

Operate and use the transmission correctly and reasonably, and perform regular maintenance. DNT editor has extracted some maintenance methods from the Fast transmission repair tool manual for your reference:1. Check the oil level position. The oil level should be flush with the lower edge of the oil level observation hole and should not be 5mm lower than the lower edge of the oil level observation...

How to install the crankshaft oil sealEngine oil leakage is a common automobile fault. Generally, when it comes to oil leakage, car owners will think that there is a problem with the seal, mostly the oil seal is broken. Here is how to install the crankshaft oil seal①First, use 3 M14*1.5*90mm hexagon socket bolts to fix the guide shaft to the front section of the engine crankshaft, and tighten it w...