Engine cooling fans-enough time?
October 16, 2017
Please be aware after January 1, 2018 a Section 609 certification card will be required to purchase R-12, R-134a, or R-1234yf cylinders of 2 pounds or more. Distributors will be...Read Article >
A technician’s approach to HVAC diagnosis and testing
August 31, 2017
Twenty years ago, we could break down all areas of HVAC diagnostics into three categories when you really think about it. It was and still is called Heating, Ventilation, and...Read Article >
MACS ACTION magazine honored with 7 IAMC awards
August 2, 2017
MACS ACTION™ magazine has been honored with seven medals for editorial excellence by the International Automotive Media Competition. The IAMC program recognizes and encourages excellence in all forms of automotive...Read Article >
Keeping pace with change
July 10, 2017
We have been hearing about the evolving and expanding roles of air conditioning and cooling as technology continues to develop. A couple examples will appear in the 2018 Dodge Challenger...Read Article >
HD and OTR vehicle service: Keep it clean
June 30, 2017
July/August 2017 MACS ACTION Magazine It’s been said that cleanliness is next to godliness. This can also be considered gospel when servicing heavy duty (HD) and over-the-road (OTR) refrigeration. These...Read Article >
Cool runnings
June 21, 2017
By Steve Schaeber, MACS Technical Editor The main purpose of a thermostat is to help the cooling system regulate engine operating temperatures to within the manufacturer’s specification. This is normally...Read Article >
Thermocycle leaks
June 19, 2017
Radiator leaks are nothing new, and some technicians may initially blame a faulty part, poor construction or shoddy workmanship during installation when a leaker shows up in their bay, particularly...Read Article >
Do you have the right tools to repair mobile A/C systems?
May 1, 2017
Global Service Horizons 2017 MACS Worldwide Trade Show puts the future in plain sight May I share something with you? Of all the automotive industry events I cover each...Read Article >
What you don’t know can hurt your diesel engine
April 4, 2017
By Lauren Lewis An introduction to heavy-duty coolant technology and best practices Coolant has a few basic jobs in a vehicle’s engine, not the least of which is to absorb...Read Article >
Truck heater control valves
March 20, 2017
By Chris Tyson, MACS heavy duty contributor We have several Class 8 trucks in our fleet and when temperatures begin to drop outside many of their owners visit our shop...Read Article >
New EPA rule allows R-1234yf in certain trucks
October 7, 2016
By Steve Schaeber, MACS Technical Editor If you’ve been waiting to see R-1234yf in something larger than a ½ ton pickup truck, you might not have to wait too much...Read Article >
More in common with an IT specialist
September 23, 2016
“…more than 30 hours of information, education and training…"Read Article >