TM-9-2520-234-35 Technical Manual for M109 Transmission XTG-411-2A Download
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Figure 20 PAR 43-44 TORQUE PATHS CHAP 2, SEC V mitted hydraulically from the converter pump to the converter turbine. When the lockup clutch is engaged, the pump and turbine are locked together and torque is transmitted me- chanically. b. When transmitted hydraulically, the torque maybe multiplied as much as 3.3 times (at turbine stall). When transmitted mechani- cally, torque leaving the converter is equal to that entering it. The lockup clutch engages and releases automatically. c. At lower speeds, when high torque is required, the lockup clutch is released. At higher speeds, when less torque is required, the lockup clutch is engaged. Lockup engage- ment can occur in every gear range and in neutral. In figures 22 through 34 the converter output is indicated by yellow when the lockup clutch is released; by red when engaged. 44. TORQUE PATH - OUTPUT TRANSFER GEARING (fig. 20) a. Two gears makeup the output transfer gearing. The drive gear is splined to the low- range carrier shaft which is the range gearing output for the power train regardless of which gear is engaged. The drive gear meshes with the driven gear and imparts opposite rotation. b. The driven gear transmits torque, through a splined shaft, to the steer planetary ring gears on either side of the driven gear. The speed reduction, and corresponding torque increase, is 1.30 to 1.00. 47