DAF - Truck, Tractor & Forklift Manual PDF, DTC Some DAF Trucks Service Manuals & Wiring Diagram PDF are above the page. DAF Trucks NV is a Dutch truck manufacturer, a division of PACCAR headquarters and the main factory are in Eindhoven. Cabs and chassis are manufactured in Westerlo in Belgium. Some models of trucks sold under the DAF brand are developed by Leyland Trucks in factories in the UK. Leyland Diesel Engine Manuals - MARINE DIESEL BASICS Manuals for Leyland Diesel Engines (including LDV and Leyland Daf) Owner and Workshop Manuals are important documents that should be part of every vessel’s library. They contain the detailed information necessary for safe operation, maintenance and correct servicing. The manuals on this page are provided for public information and education and can be downloaded for free.