Second Gear-Straight Travel

TM 9-2520-249-34&P

b. Second Gear-Straight Travel (fig. 2-16 ).

Figure 2-16. Second gear, straight travel operation-torque path

(1) In second gear, the torque path from

applied. The cross shaft, which is attached to the steer

the engine to the cross shaft is the same as that

planetary ring gears, drives the locked planetaries and

described for first gear (a (1), above). In the left and

output shafts at a 1 to 1 ratio.

(2) The output shafts are splined to the

right-output sections, the output clutches are engaged

transfer drive gears.

The total mechanical speed

which lock the clutch hubs to the steer sun gears. The

reduction ratio from the engine through the transmission

output clutch hubs and steer planetary carriers are

outputs is 13.418 to 1. At output stall, the total torque

attached to the output shafts. Thus, two members of the

ratio available (output-to-engine) is (2.6 x 13.418)

steer planetary are locked together, causing the entire

34.887 to 1.

steer planetary to rotate as a unit when torque is

2-32