3. Check the accessory drive belt for pilling. The condition of the accessory drive belt should be compared against the illustration.
1. Small scattered pills. Not considered a concern. No action required.
2. Small scattered pills. Not considered a concern. No action required.
3. Longer pills up to 50% of the rib height. Possible noise concern. INSTALL a new accessory drive belt if noise is apparent. REFER to: Accessory Drive Belt (303-05C Accessory Drive - 5.0L 32V Ti-VCT/5.0L Ti-VCT V8 (308kW/418PS), Removal and Installation).
4. Longer pills up to 50% of the rib height. Possible noise concern. INSTALL a new accessory drive belt if noise is apparent. REFER to: Accessory Drive Belt (303-05C Accessory Drive - 5.0L 32V Ti-VCT/5.0L Ti-VCT V8 (308kW/418PS), Removal and Installation).
5. Heavy deposits in the grooves. Possible noise and stability concern. INSTALL a new accessory drive belt. REFER to: Accessory Drive Belt (303-05C Accessory Drive - 5.0L 32V Ti-VCT/5.0L Ti-VCT V8 (308kW/418PS), Removal and Installation).
6. Heavy deposits in the grooves. Possible noise and stability concern. INSTALL a new accessory drive belt. REFER to: Accessory Drive Belt (303-05C Accessory Drive - 5.0L 32V Ti-VCT/5.0L Ti-VCT V8 (308kW/418PS), Removal and Installation).
Incorrect fitment
Accessory drive belt noise can be generated by the accessory drive belt being incorrectly fitted on the pulley as shown in the following illustration. Make sure that all the V grooves on the accessory drive belt contact correctly
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.