07/11/02 08:46:28 61TA0000_140_0038
Automatic Transmission
System Description (cont'd)
Power Flow (cont'd)
R Position
• Hydraulic pressure is applied to the servo valve to engage the reverse selector with the countershaft reverse gear
and the reverse selector hub while the shift lever is in R.
• Hydraulic pressure is also applied to the 4th clutch, then the 4th clutch engages the mainshaft reverse gear with the
mainshaft.
• The mainshaft reverse gear drives the countershaft reverse gear via the reverse idler gear.
• The rotation direction of the countershaft reverse gear is changed by the reverse idler gear.
• The countershaft reverse gear drives the countershaft via the reverse selector, which drives the reverse selector hub.
• Power is transmitted to the final drive gear, which in turn drives the final driven gear.
*08
MAINSHAFT
14-36
MAINSHAFT
REVERSE
REVERSE GEAR
IDLER GEAR
COUNTERSHAFT
REVERSE GEAR
REVERSE SELECTOR HUB
4TH CLUTCH
REVERSE SELECTOR
TORQUE
CONVERTER
FINAL DRIVE
GEAR
COUNTERSHAFT
SECONDARY
SHAFT
FINAL DRIVEN GEAR