This listing is for the Detroit Allison Diesel 53 Series built by the Detroit Diesel Allison Division of General Motors. It has complete instructions on operation, adjustment (tune-up), preventative maintenance, lubrication and repair (including complete overhaul). Basic maintenance and overhaul procedures are common to all Series 53 engines and therefore apply to all engine models. This manual is 739 pages and is loaded with schematics, photos, drawings and written instructions to help you repair or restore your Detroit Series 53 Diesel Engine.