ENGINE MAINTENANCE - Maintenance Schedule Engine Maintenance Schedule 2 Y53-1181-1K1 (08/2018) 35 Component 2 Maintenance Task Recommended Preventative Maintenance Interval A B C D E F G H J Aftertreatment System Diesel Particulate Filter (DPF) Dry Cleaning on page 71 - Dry Cleaning Strategy • Diesel Particulate Filter (DPF) Wet Cleaning on page 72 - Wet Cleaning Strategy • Diesel Exhaust Fluid (DEF) Filter on page 72 • Air System & Compressor Air Compressor on page 74 • Air Cleaner on page 74 • Charge Air System Charge Air Piping on page 74 • Charge Air Cooler on page 74 • Charging / Cranking System Electrical Harness / Cables on page 77 • Batteries, Cables, and Connections on page 77 •