Engine 01 1 1 3 2 2 4 04/05/2001 f011984 1. V-Groove 2. Pointer 04/30/2001 f011976 1. Fan Clutch 2. Air Conditioning Compressor 3. Alternator 4. Spring-Loaded Tensioner Fig. 6, Detroit Diesel Self-Tensioner 3 1 Fig. 8, Caterpillar C10 and C12 2 1 2 4 3 04/30/2001 f011975 1. Fan Clutch 2. Air Conditioning Compressor 3. Alternator 4. Spring-Loaded Tensioner 04/30/2001 f011977 Fig. 7, Caterpillar 3126B 1. Fan Clutch 2. Air Conditioning Compressor 3. Alternator Fig. 9, Caterpillar C15 and C16 Western Star Maintenance Manual, September 2015 01/5