TM-9-2350-261-20-1 Unit Maintenance Manual Volume 1 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
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TM 9-2350-261-20-1 THEORY OF OPERATION — Continued 0003 00 DIFFERENTIAL COMPONENTS The differential consists of three major assemblies. These are the right angle gearbox (1), steering unit with brake shoes (2), and two output shafts (3). Power flow is from the transmission to the right angle gearbox (1) to the steering unit (2). When driving straight forward, the steering unit (2) delivers equal power to both output shafts (3). Pressure on either steering lever slows or stops the right or left brake drum, inside the center steering unit (2), and reduces the speed of the right or left output shaft (3). By slowing down one side you increase the speed of the other, and the carrier will turn in the direction of the applied brake. Equal pressure on both steering levers applies both brakes and slows or stops the carrier. The differential overheat switch (4) is connected to a warning light in driver’s compartment. When warning light comes on, it means oil temperature is too high. 0003 00-7