Ask the Expert: What are the annual maintenance requirements for an A/C machine?

March 16, 2015

Aside from the filter, other maintenance items include an annual calibration and that the vacuum pump oil is changed at regular intervals.

Eric Shultz, engineering manager, MAHLE Service Solutions

Q: What are the annual maintenance requirements for an A/C machine?

A: SAE certified machines require the desiccant filter to be changed after recycling 150 lbs of refrigerant. It is recommended to change in-line filters at this time as well. Aside from the filter, other maintenance items include an annual calibration and that the vacuum pump oil is changed at regular intervals. The service hoses and couplers should also be inspected regularly for wear, and for vacuum leaks not visible to the naked eye.

Information provided by: MAHLE Service Solutions

About the Author

Eric Shultz | Engineering Manager, MAHLE Service Solutions

Eric Shultz serves as the engineering manager for MAHLE Service Solutions and is based at the company’s location in York, Pennsylvania.

Continue Reading

Stones Fool YAW Sensor

Tool Review: Cal Van Tools Amp Hound 2

Sponsored Recommendations

Tesla service, repair, and diagnostics

Keep update-to-date on how to maintain your customer's Tesla vehicles.

Tool Review: Ascot Supply 3/4" Drive 600 ft-lbs Split Beam Torque Wrench, No. 168-00600

Reviewed by Eric Moore, manager at DeMary Truck in Columbus, Ohio.

Diagnosing an engine misfire

Recognizing a misfire is the easy part; the challenge is determining its cause.

The ‘Iron Giant’

This technician spent two and half years putting together his ‘giant’ of a toolbox setup.

Voice Your Opinion!

To join the conversation, and become an exclusive member of Vehicle Service Pros, create an account today!