Hydraulics & Pneumatics Blog | RestoPower

Hydraulic Pump Leaking From the Shaft? Read This First
A shaft seal almost never fails on its own. Something pushed it, worked it, or wore the surface it runs on. Find that first, because a new seal fitted over the real fault leaks again in weeks. Read more...
Hydraulic Pump Making Noise: Whine, Growl or Knock?
The sound tells you the fault. A rising whine, a gravelly growl and a sharp knock are three different problems with three different fixes. Here is how to tell them apart before you pull the pump. Read more...
Hydraulic Pump Not Building Pressure? Work Through It in This Order
A pump makes flow, not pressure. If pressure will not build, flow is escaping somewhere. Here is the isolation test that finds where, and the seven causes ranked by how often they are actually to blame. Read more...
Why Is My Hydraulic Pump Overheating? Causes and Fixes
Heat in a hydraulic system is wasted energy with nowhere to go. Here are the six real causes of an overheating pump, the order to test them in, and the parts that actually fix each one. Read more...
Poclain Hydraulic Motor Guide: MS Series & Seal Kits Explained
Poclain Hydraulic Motor Guide: MS Series & Seal Kits Explained
Understand Poclain hydraulic wheel motors - MS02, MS05, MS08, MS11, MS18 and MSE series - so you can identify your motor and find the right seal kit or parts. Read more...
Racine Hydraulic Pump Guide: PVQ, PVB, PVS & PVF Series Explained
Racine Hydraulic Pump Guide: PVQ, PVB, PVS & PVF Series Explained
Understand Racine hydraulic pumps - PVQ, PVB, PVS, PVF and C-series models - so you can identify your unit and find the right seal kit or parts. Read more...
Bosch Rexroth Pump Guide: A10VSO, A4VG & A11VO Series Explained
Bosch Rexroth Pump Guide: A10VSO, A4VG & A11VO Series Explained
Understand Bosch Rexroth piston pumps - A10VSO, A4VG, A11VO and A7VO series - so you can decode your model and find the right seal kit or replacement part. Read more...
Sundstrand Hydraulic Pump & Motor Guide: Series 20, 90 & Seal Kits
Sundstrand Hydraulic Pump & Motor Guide: Series 20, 90 & Seal Kits
Understand Sundstrand hydraulic pumps and motors - Series 15, 18, 20, 22, 24, 30, 40, 45 and 90 - so you can identify your unit and find the right seal... Read more...
Oilgear Pump Parts Guide: PVG, PVWH & PVWJ Series (Hard-to-Find Specialist)
Oilgear Pump Parts Guide: PVG, PVWH & PVWJ Series (Hard-to-Find Specialist)
A guide to Oilgear piston pump series - PVG, PVV, PVWJ, PVWH, PVM, PVK and more - so you can identify hard-to-find models and source the right parts and seal... Read more...
Denison Hydraulic Pump Guide: Gold Cup, T6 & T7 Series Explained
Denison Hydraulic Pump Guide: Gold Cup, T6 & T7 Series Explained
Understand Denison hydraulic pumps - Gold Cup piston pumps (P6-P30, PV series) and T6/T7 vane pumps - so you can identify your model and find the right parts and seal... Read more...
How to Read a Parker Hannifin Pump Model Number (Series Guide & Parts Finder)
How to Read a Parker Hannifin Pump Model Number (Series Guide & Parts Finder)
A plain-English guide to decoding Parker Hannifin pump model numbers - P1, PD, PVP, PAVC, PVplus and F-series - so you can identify your pump and find the right parts... Read more...
Vickers V10 vs V20: Which One Do You Have? Specs, Flow & Parts
Vickers V10 vs V20: Which One Do You Have? Specs, Flow & Parts
Vickers V10 and V20 vane pumps compared with real flow and pressure figures, how to tell which frame you are holding, and where to get the exact parts and seal... Read more...
How to Identify the Right Char-Lynn Seal Kit for Your Hydraulic Motor
How to Identify the Right Char-Lynn Seal Kit for Your Hydraulic Motor
Read the 10 digit Char-Lynn part number, decode the product line and design code, and match the correct seal kit the first time. Includes the full Char-Lynn and Eaton product... Read more...
Char-Lynn & Eaton Orbital Motor Cross-Reference Guide (Find Your Replacement)
Char-Lynn & Eaton Orbital Motor Cross-Reference Guide (Find Your Replacement)
Char-Lynn (now part of Eaton and Danfoss) builds some of the most widely used orbital hydraulic motors in the world, and when one wears out, finding the correct replacement or... Read more...
How to Read a Vickers & Eaton Pump Model Number (Complete 2026 Decoder Guide)
How to Read a Vickers & Eaton Pump Model Number (Complete 2026 Decoder Guide)
A field-by-field guide to decoding Vickers and Eaton pump model numbers so you can identify your pump and order the exact seal kit or replacement part. Read more...
RestoPower hydraulic systems guide – how do hydraulics work, complete 2026 guide
How Do Hydraulics Work? The Complete 2026 Guide to Hydraulic Systems
Last Updated: January 2026 | Reading Time: 12 minutes Hydraulic systems power everything from massive construction equipment to the brakes in your car. Understanding how hydraulics work reveals one of... Read more...
RestoPower guide to troubleshooting and setting hydraulic relief valves
Troubleshooting and Setting Relief Valves in Hydraulic Systems: A Complete Guide
Discover expert tips on setting and troubleshooting relief valves in hydraulic systems. Step-by-step guide to safe adjustment, common issues, and maintenance for optimal performance and overpressure protection. Read more...
RestoPower complete guide to hydraulic and pneumatic repair tools
The Complete Guide to Hydraulic and Pneumatic Repair Tools
The Complete Guide to Hydraulic and Pneumatic Repair ToolsHaving the right tools is crucial for maintaining and repairing hydraulic and pneumatic systems efficiently. Using proper tools ensures safety, accuracy, and... Read more...
RestoPower guide to maintaining your hydraulic pump for longer life
How to Maintain Your Hydraulic Pump for Longer Life
How to Maintain Your Hydraulic Pump for Longer LifeProper hydraulic pump maintenance prevents costly repairs and downtime. Following a regular maintenance schedule ensures reliable operation. Routine Inspection ChecklistCheck fluid levels,... Read more...
RestoPower guide comparing hydraulic vs pneumatic systems
Hydraulic vs Pneumatic Systems – Which One Do You Need?
Hydraulic vs Pneumatic Systems – Which One Do You Need?Hydraulic and pneumatic systems are used in a wide range of industries. Understanding their differences can help you choose the right... Read more...
RestoPower guide to 5 common hydraulic pump failure symptoms in construction equipment
5 Common Symptoms of Hydraulic Pump Problems in Construction Machinery
Hydraulic pumps are the heart of heavy construction equipment excavators, loaders, bulldozers, and cranes all depend on them to power lifting, digging, and moving massive loads. When a pump starts... Read more...
RestoPower guide to choosing the right hydraulic seal kit for your pump
How to Choose the Right Hydraulic Seal Kit
How to Choose the Right Hydraulic Seal KitSelecting the right hydraulic seal kit is critical for keeping your pumps leak-free and operating efficiently. Whether you’re maintaining a Vickers pump, Parker... Read more...
RestoPower guide on whether to repair hydraulic parts or buy new replacements
Repair your hydraulic parts or buy new?
Deciding whether to repair or buy new hydraulic parts depends on several factors, including the extent of damage or wear, cost considerations, availability of replacement parts, and the overall condition... Read more...
RestoPower guide explaining how a hydraulic cylinder works
How do hydraulic cylinders work?
How do hydraulic cylinders work? Our complete guide explains pistons, pressure, seals, and fluid mechanics for industrial applications. Learn from the experts. Read more...
RestoPower guide to the parts inside a hydraulic directional control valve
What Parts Are Inside a Hydraulic Valve? A Complete Guide for Technicians
A hydraulic directional control valve is one of the most critical components in any hydraulic circuit. It controls where pressurized fluid goes, to extend a cylinder, drive a motor, or... Read more...
How do hydraulic valves work??
How do hydraulic valves work??
Hydraulic valves are essential components in hydraulic systems and are used to control the flow, pressure, and direction of hydraulic fluid. There are many different types of hydraulic valves, but... Read more...
What is a hydraulic piston pump, and how does it work??
What is a hydraulic piston pump, and how does it work??
A hydraulic piston pump is a type of hydraulic pump that uses a reciprocating piston to generate fluid flow and pressure within a hydraulic system. This pump consists of a... Read more...
What is a hydraulic pump??
What is a hydraulic pump??
Hydraulic pumps are mechanical devices that are used to generate fluid flow and pressure within a hydraulic system. These pumps are designed to convert mechanical energy into hydraulic energy, and... Read more...
What is Vickers and what do they make?
What is Vickers and what do they make?
Vickers Hydraulics is a brand name that was once used by the Eaton Corporation, a global technology leader in power management solutions. Vickers Hydraulics was a leading manufacturer of hydraulic... Read more...