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Portable Diesel Air Compressors | Air Compressor Guide
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Portable Diesel Air Compressors

  • Title: Portable Diesel Air Compressors
  • Applicable to: Diesel-driven / Portable / Tow-begin air compressors (Oil-injected rotary screw)
  • Format: Book (digital PDF)
  • level: Beginner to Intermediate

A practical guide to Portable Diesel Air Compressors: maintenance, troubleshooting, operations, buying and options, everything.

If you work with portable diesel air compressors, in any way, this book is for you.

What is this book about?

  • How portable diesel compressors work: oil-injected rotary screw compressors, air system, oil system, control system
  • Capacity control methods of portable diesel screw compressors
  • Diesel engine basics
  • Operations: Planning for compressor deployment, hot weather operations, high altitude operations, setting-up, pre-start checklists, daily operations, shutting down
  • Maintenance of diesel engine and compressor, checks, test-runs
  • Troubleshooting advice for both compressor and diesel engine
  • Overview and identification of sensors and safety switches
  • Much, much more..

This book contains 180 pages of to-the-point and easy to understand information about portable diesel air compressors with more than 160 images and diagrams – everything you need to know about portable diesel compressors is explained in detail.

You will get a direct download digital version of the book (PDF).

You will also have lifetime access to updates. When a new version of the book becomes available, you can download it from the members area.

Plus, you get access to me. You can ask me questions – about the book, or about your specific machine or problems that you might have.

See other tab for a full content overview by chapter.

Rotary Screw Compressor

  • The screw element

  • Oil-free vs oil-injected screw compressors

  • Compression ratio

  • High pressure two-stage machines

  • High capacity twin-screw machines

  • Stationary vs portable diesel compressors

  • Controlling outlet pressure

  • Controlling compressor capacity

How portable diesel screw compressors work

  • The air system – inlet air filters, inlet valve, screw element, check valve, oil-separator, minimum pressure valve

  • The oil system – screw element, oil separator tank, oil separator filter, scavenge line and pipe, thermostatic valve, oil cooler, oil filters, oil stop valve

  • Compressor control systems – electrical start, stop and safety systems

  • Compressor control systems – pneumatic control system


  • General troubleshooting advice

  • Troubleshooting engine startup and shutdown problems

  • Specific troubleshooting advice (overheating of compressor, overheating of diesel engine, low pressure, safety valve blows, oil in compressed air, oil out of inlet filter, water in compressed air)

  • Sensors and safety devices on portable diesel compressors

Diesel engines

  • Diesel basics

  • Cooling system

  • Engine oil system

  • Air system (inlet and exhaust)

  • Fuel system

  • Engine control system – electronic and mechanical speed control and fuel injection systems.


  • Standard maintenance intervals

  • Maintenance procedures and information

  • Compressor oil

  • Engine oil

  • Engine and compressor inlet filters

  • Compressor and engine oil filters

  • Oil separator element

  • Coolers

  • Fuel filters

  • Engine valve clearance

  • Checks to perform after maintenance (test-run)

Buying and options

  • Compressor size: pressure vs capacity

  • Pressure and capacity

  • What pressure and capacity do you need?

  • Problems when buying the wrong compressor (too high/low pressure, too high/low capacity, etc)

  • Options and extras (aftercoolers, condensate traps, re-heaters, air dryers, spark arrestors, intake air shutoff valves, tool lubricators, external fuel tanks, towbar types, air outlets, built-in generators, cold start / cold climate options)


  • Setting up on a new site

  • Before starting the compressor

  • Starting the diesel engine

  • Starting compression (loading)

  • Normal operation

  • Stopping the compressor

  • Adjusting pressure

  • Opening and closing valves

  • Connecting and disconnecting hoses


  • Hot weather operation

  • Cold weather operation

  • Ambient air quality: dust, chemicals, flammable gases

  • High altitude operation

  • Location and access

If you work with portable diesel air compressors, in any way, this book is for you.

  • Compressor operators

  • On-site maintenance technicians

  • Compressor technicians

  • Compressor service companies

  • Planners and buyers

Diesel compressors are used at all sorts of locations – construction sites, mining sites, oil-and gas fields, and many more place. These machines are often used in remote places, so if something is wrong with the machine – you are responsible to fix it. But you need to get your job done – not spend time fixing this machine.

If you work with, maintain, or repair diesel compressors, this book is for you!

It contains everything you need to know – how they work, what each part does, troubleshooting help – everything.