R-1234yf Safety Procedure Checklist
Remember that R-1234yf is only mildly flammable. To become flammable, the mixture of air and refrigerant in a closed area like a vehicle cabin would need to be between 6.5% and 12.3% of the chemical vapor. This mixture must then experience a significant amount of energy to ignite it. In some lab tests, a spark
Refrigerant Revolution: What R-1234yf Means for Service, Equipment, Safety
The new R-1234yf refrigerant is more than just a new jumble of numbers and letters on a label. For your shop, R-1234yf means several new procedures, a certification and new equipment in order to properly handle these new systems. Why the difference in handling and servicing R-1234yf systems versus R-134a? The reason is flammability. Don’t
Case Study: 1996 GMC 1500 with no temperature control
• No A/C, no vent control, no temperature control • A/C and recirculation buttons will not light up • All new components, including compressor and control head Cars with a little age on them can be temperamental when diagnosing what might seem at first to be an easy problem. This 1996 GMC had already gone
A/C Oil Service: Avoid Compressor Failure With Proper Maintenance
HVAC systems often fail because the air conditioning compressor fails. Not following the proper service procedures or compressor oil recommendations could be factors that contribute to premature compressor failure. Refrigerant Since the mid-‘90s, all vehicles have been using R-134a refrigerant, but soon, vehicles will arrive at your shop equipped with R-1234yf refrigerant. This is the
Saturn HVAC Performance Issue: Noise Concern
Condition Some customers may comment that the vehicle’s A/C is not cooling or is not cold enough and/or the A/C compressor is noisy. Correction Do not replace the A/C compressor. For concerns of A/C system noisy during slow parking lot maneuvers, replace the HVAC hose with suction line (P/N 20757021 or aftermarket equivalent). For concerns of A/C
Tech Tip: How to Properly Install an Orifice Tube
This Tech Tip is presented by our friends at the Mobile Air Conditioning Society. Installing an Orifice Tube properly is an important part of general A/C maintenance. Steve Schaeber explains how to install the Orifice Tube in relation to refrigerant flow, the reason for its design and the tool needed for removal. [computer] Please enable
HVAC Sensors: More Than Just Temperature
When a driver sets a temperature in the control head of an HVAC system, what does it mean to the vehicle? Seventy-two degrees could mean many different settings depending on the outside temperature, humidity and even the position of the sun. When a passenger decides that 70 degrees is a better temperature for their zone,
Hybrid Fluid Service 101
Does the phrase ”hybrid fluid maintenance” scare you? It shouldn’t. With more than 3 million hybrids on the road, and many of your customers considering purchasing one, servicing hybrid vehicles is in your future. Some special procedures must be followed when working on a hybrid.
10 Toughest Cabin Air Filter Jobs
Cabin air filters prevent leaves, dirt, bugs and other debris from entering the HVAC system. This prevents the fan and control doors from jamming with debris that could cause fan noise or affect the operation of the heater, air conditioner and defroster. Keeping the HVAC system clean also helps reduce the growth of odor-causing mold
Air Conditioning System Advances Change Service Opportunities
The attention-grabbing headline in the world of air conditioning is usually the switching of refrigerants as the industry and regulators continue to search for the next level of environmental friendliness. But the underrated A/C story that’s slowly developed during the same time period is the overall improvement of A/C systems.
10 Toughest Cabin Air Filter Jobs
There are still many late model vehicles that are not easy to service, and they require a significant amount of disassembly to gain access to the filter. For your shop, this is billable labor. Here are the 10 toughest jobs according to the editors of Underhood Service.
New Digital Steering Catalog And Prop Shaft ID Guide From CARDONE
CARDONE’s new Steering Catalog features hundreds of new SKUs and covers import and domestic, reman and new: Power Steering Pumps, Rack & Pinions, Steering Gears, Pittman Arms and Magna-Pure Power Steering Pumps & Filters.
