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UNDERHOOD FEAD (Front End Accessory Drive)

UNDERHOOD FEAD (Front End Accessory Drive). Compressor. Bracket. Tensioner. Idlers. Serpentine Belt. Crank Pulley. Compressor does not run. Problem Diagnostics/Troubleshooting. Oil temperature too high Oil level too low No power to clutch Drive belt broken Bad clutch ground

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UNDERHOOD FEAD (Front End Accessory Drive)

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  1. UNDERHOOD FEAD (Front End Accessory Drive) Compressor Bracket Tensioner Idlers Serpentine Belt Crank Pulley

  2. Compressor does not run Problem Diagnostics/Troubleshooting • Oil temperature too high • Oil level too low • No power to clutch • Drive belt broken • Bad clutch ground • Open clutch stator windings • Park brake not engaged

  3. Problem Diagnostics/Troubleshooting Commpressor shuts down on over-temperature • Excessive high ambient air temperature • Engine cooling system malfunction • Restriction in the compressor oil hoses • Low oil level or incorrect oil • Oil temperature probe failure • Control box failure Oil Temperature Probe

  4. Clutch Replacement

  5. Clutch Replacement

  6. Problem Diagnostics/Troubleshooting System over pressurizing Pressure control line plugged or frozen Inlet valve not closing or faulty seat Pressure relief valve is defective Regulator or passage plugged

  7. Problem Diagnostics/Troubleshooting System over pressurizing Pressure regulator setting too high Regulator or passage clogged

  8. Problem Diagnostics/Troubleshooting System is still under pressure Blow-down valve not working or exhaust muffler plugged Improper belt tension Belt is glazed Clutch or Compressor siezed Belt squeals when system is activated Belt Tensioner

  9. Problem Diagnostics/Troubleshooting Excessive oil in the air Scavenge oil return connection • Failed or clogged coalescing separator element • Blocked scavenge line screen or tube. • Excessive oil level (overfilled) • Compressor turned off while running at high speed with air being discharged • Reversed discharge lines System pressure connection Clean air discharge Air/oil mist enters here from separator tank Scavenge Tube Scavenge Screen

  10. Problem Diagnostics/Troubleshooting Excessive oil in the air • High oil level • Vehicle not within requirements of 15 ͦ level • Clogged scavenged line screen

  11. Problem Diagnostics/Troubleshooting Oil discharge out the air filter Inlet valve sticking O-ring seat • Shutting engine off while running at high speed • Inlet valve sticking • Inlet valve O-ring seat leaking Inlet Valve

  12. Problem Diagnostics /Troubleshooting Inlet Control Valve checking for faults • Regulator failure • Oil leakages • Inlet valve worn out • Pressure sensors failure Valve Seat with Orifice Pressure Bleed Hole Pressure Adjustment Screw Spring Regulator Diaphragm

  13. Service Intervals • 500 hour interval or 6months - Service kit part number A700205 • Includes air filter, oil filter, 4 ltr jug oil & 1ltr bottle oil, decal (next service) • 1000 hour interval or 12 months – Service kit part number A700206 • Includes air filter, oil filter, 4 ltr jug oil & 1ltr bottle oil, decal (next service) Coalescing filter

  14. Contact Information Technical Support: 1-888-241-2289 tech@vmacair.com Mon-Fri 6am-4:30pm Pacific Parts 1-800-738-8622 Mon-Fri 6am-4:30pm Pacific Email: oem@vmacair.com

  15. Support Online Knowledge Base http://kb.vmacair.com/ Clutch Diagnostics and Replacement http://kb.vmacair.com/help/clutch-diagnostics-and-replacement Owner’s Manual http://vmacair.com/wp-content/uploads//Manuals/Specialty/sp_owner_1930065_c.pdf Oil MSDS http://vmacair.com/wp-content/uploads//files/vmac_oil_sds_sheet.pdf

  16. THANK YOU! If you have any questions please contact OEM@vmacair.com 1-800-738-8622 - ask for the OEM Group

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