Delphi Harrison V5 Compressor (Operation & Failure Examination)

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Tim Iezzi V5 Compressor

One of the most common questions we get at MACS is how mobile A/C compressors work, how they can be properly diagnosed, and what steps can be taken to help successfully replace compressors.

Tim Iezzi is co-owner and lead technician at Iezzi's Auto Service in Reading, PA. He's also a regular contributor to MACS publications, conducts training classes for MACS and Carquest Technical Institute, and was recently elected to serve as a member of MACS board of directors.

In this video, Tim Iezzi explores the operation, disassembly, reassembly and examines the failure modes of this particular Delphi Harrison V5 variable displacement 5-cylinder mobile air conditioning A/C compressor. He removes the clutch driven plate, clutch pulley, drive plate, clutch coil, and splits open the case housing to inspect the internal components, drive shaft, pistons, swash plate, reed valves, seals, o-rings, pressure control valve, bolts, etc. Learn about what made this compressor fail, how it was dropped (which damaged the drive plate and bent the input shaft), how to look for this problem, and the presence of flush solvent inside the compressor which caused rusting and a seized bearing.

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MACS Worldwide is the Mobile Air Conditioning Society (MACS) Worldwide, headquartered in Lansdale, Pennsylvania. We are the premiere non-profit membership association for the mobile air conditioning industry and largest provider of US EPA Section 609 Certification and technician training programs for Mobile A/C Service "Best Practices" repair methods and diagnostic procedures. MACS gives back to our membership, our industry and the community by participating in industry forums such as SAE (Society of Automotive Engineers) and TMC (Technology and Maintenance Council of the ATA American Trucking Association). We also volunteer with local groups, organizations and food banks to support our community and those in need throughout the year.

If you'd like to learn more about MACS, our members (manufacturers, distributors and service shops), our staff and our board of directors, please visit our website www.macsw.org or call us at (215) 631-7020. We also publish ACtion Magazine, the industry's leading trade journal for mobile air conditioning and heat transfer, along with a monthly 8-page newsletter packed with technician focused service content related to mobile HVAC.