Accessory Drive — Accessory Drive Belt Concerns — Accessory Drive - 2.3L EcoBoost (231kW & 314PS) · Reference 4523

Accessory Drive — original illustration 1, reference 4523Original colors & callouts · Select to enlarge

2. Check the accessory drive belt for damage. If any chunks are found to be missing, install a new accessory drive belt. REFER to: Accessory Drive Belt .

Pilling

Pilling is dust that forms in between the ribs of the accessory drive belt from rubber that is worn off the accessory drive belt when it is new. There may also be loose particles left on the accessory drive belt during the manufacturing process. These are worn off and form into small balls of rubber that then get trapped in the grooves of the accessory drive belt. This condition will usually clear itself within 4800 km - 8000 km (3000 miles - 5000 miles) of normal driving.

Accessory Drive — original illustration 2, reference 4523Original colors & callouts · Select to enlarge

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.

Ford_Mustang_all_2015-2017.pdf · source reference 4523

Original technical text and illustrations, formatted as HTML. Follow the engine, transmission, equipment, model and year specified in the source. Import and layout checks do not establish applicability to every 2015–2017 Mustang. About this collection.