Product Description: 130 pages- Caterpillar D8 Crawler (1H1-1H9999, 2U1-2U23537, (8R1-8R9999, 13A1-13A3703, 14A1 and Up , 15A1 and Up, 18A1 and Up, 19A1 and Up) #44 Hyd Control Attch (6W5001 and Up) Parts Manual (PTS) 130 pages- Caterpillar D4 Crawler (2T1-2T9999, 4G1-4G9999, 5T1-5T7411, 6U1 and Up, 7U1 and Up, 7J1 -7J9999, 8U1 and Up) #44 Hyd Control Attch (6W5001 and Up) Parts Manual (PTS) 130 pages- Caterpillar D7 Crawler (3T1-3T28058, 4T1-4T9999, 6T1-6T1054, 7M1-7M9999, 17A1 and Up) # 44 Hyd Control Attch (6W5001 and Up) Parts Manual (PTS) 130 pages- Caterpillar Hyd Ctls Attch #44 (6W5001 and Up) Used on D4,D6,D7,D8,D9 Parts Manual(PTS)