ENGINE MAINTENANCE - Maintenance Schedule Engine Maintenance Schedule 2 Y53-1166-1G1 (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 72 - Dry Cleaning Strategy • Diesel Particulate Filter (DPF) Wet Cleaning on page 73 - Wet Cleaning Strategy • Diesel Exhaust Fluid (DEF) Filter on page 73 • Air System & Compressor Air Compressor on page 75 • Air Cleaner on page 75 • Charge Air System Charge Air Piping on page 75 • Charge Air Cooler on page 75 • Charging / Cranking System Electrical Harness / Cables on page 78 • Batteries, Cables, and Connections on page 78 •