Hydraulic Repair Guides

specifying INDUSTRIAL HYDRAULIC power units

11/3/2025

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What to consider in specifying INDUSTRIAL HYDRAULIC power units:

SAFETY concerns
Functions of actuators (for valves mounted on power units)
Duty cycle on machine
Desired cycle times each actuator
Replacing existing HPU or new machine
Noise specifications
Space limitations
Hydraulic fluids to be used
Electric motor specifications and control power specifications
Indicators for over pressure, heat, and dirty filter electrical or visual
Operational life of system
Filter specifications or component specifications
Cooling requirements
Custom or standard reservoir layout
Customer suggestions or preferences

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31 Expert Hydraulic Repair & Diagnostic Fixes

10/31/2025

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The Certified Specialist’s Quick Guide to Troubleshooting Common System Failures.

Don't let hydraulic failure cost you valuable time. Our Certified Fluid Power Specialists have compiled a comprehensive guide to quickly diagnose and address the most common problems from mysterious pump noise to excessive heating. Stop guessing and start fixing with this step-by-step repair guide.

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THE PPC EXPERT GUIDE TO: FLUID POWER PRINCIPLES

10/16/2025

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Essential Formulas, Definitions, and Troubleshooting for Hydraulic Systems

Part I: Fluid Power Fundamentals

Presented by Progressive Power & Control, Indiana's trusted fluid power specialists.

A. Defining Hydraulics

Hydraulics is a means of transmitting power. It may be used to multiply force or modify motions.
Pascal's Law: Pressure exerted on a confined fluid is transmitted undiminished in all directions, and acts with equal force on all equal areas and at right angles to them.
Pressure Drop: There must be a pressure difference across an orifice (restriction) to cause fluid flow through it. If there is no flow, there is no pressure drop

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