2020+ Ford Super Duty 7.3L with Dual OEM Alternators UNDERHOOD 70 & 150 cfm System Compatibility

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Technical Support Subject 2020+ Ford Super Duty 7.3L With Dual OEM Alternators UNDERHOODTM 70 &150 cfm System Compatibility Issue Document Version Department Revision Details Revised by Tech Engineering Implemented EXT-UH-002 A Tech Document Release BDJ N/A BG 26May2020 26 May 2020 Knowledge Base Email: tech@vmacair.com : kb.vmacair.com Page 1 of 1 Web: www.vmacair.com Technical Support: 1(888)241-2289 Toll Free:1(800)738-8622 Fax: 1(877)740-3201 System or Parts affected • V910031 UNDERHOOD 150 Air Compressor for F250~550 7.3L Gas 2020+ • V900131 UNDERHOOD 70 Air Compressor for F250~550 7.3L Gas 2020+ Overview • As outlined in the VMAC Application List the VMAC V900131 and V910031 systems are not compatible with 2020+ Model Year Ford F250~550 7.3L gasoline powered trucks that are equipped with Dual OEM alternators. • If the installer determines that a single alternator will fulfill the truck’s operational charging system requirements, conversion to single alternator is an option to accommodate the installation of the above UNDERHOOD systems. It is the responsibility of the installer of the VMAC UNDERHOOD system to verify that a single alternator will meet or exceed the operational charging demands of the truck and its equipment. Poor battery charging and any problems resulting from charging system alterations including the removal of the OEM secondary alternator during upfitter modifications are non-warrantable by both Ford and VMAC. The conversion to single alternator will necessitate a change to one of the following belts: VMAC: 1610101, Gates: K060802, or Ford: JK6-805/LC3Z-8620-C All other required parts are included in the UNDERHOOD kit. Before you order • Ensure your customer’s truck was not ordered with Option Code 67B: 397-Amp Dual Alternators (240A primary alternator and 157A secondary alternator). • Read Ford SVE Bulletin Q-266R2 carefully at https://madocumentupload.marketingassociates.com/api/Document/GetFile?v1=5329024&v2=032 420095954&v3=60&v4=e18e933bd00f373a2b7237085cf1f92e5dc3ebe7d16046ae796d3dd5&v5= False or scan the following QR code to view: If you have any questions or concerns regarding this document, please contact VMAC Technical Support at 1-888-241-2289 or tech@vmacair.com .