APPLY COMPONENTS [LA4AX-EL (CD4E)]
BUE051700000N24
Intermediate and Overdrive Band
• The intermediate and overdrive band component holds the reverse clutch drum component to the transaxle case in 2nd gear and 4th gear. This action causes the reverse/overdrive sun gear and shell component to be held stationary in 2nd gear and 4th gear.
Intermediate and Overdrive Servo
• The intermediate and overdrive servo is the hydraulic actuator which applies the intermediate and overdrive band component.
• Line pressure is applied through the servo apply circuit where it works on one side of the servo piston. This forces the piston to move up the servo bore in the transaxle case, which moves the servo apply rod against one end of the intermediate and overdrive band component.
• Because the other end of the intermediate and overdrive band component is anchored to the transaxle case, the ends of the intermediate and overdrive band component are squeezed around the reverse clutch drum component, holding the reverse clutch drum component stationary.
Forward Clutch
• The forward clutch connects the turbine shaft to the outer race of the forward one-way clutch, which in turn drives the low/intermediate sun gear in all forward gear ranges. However, in 4th gear, the forward clutch transmits no power because the forward one-way clutch is overrunning.
• The forward clutch is a multi-disc clutch and is contained in the forward/coast/direct clutch cylinder component.
Direct Clutch
• The direct clutch connects the turbine shaft to the low/intermediate ring gear component when the vehicle is in 3rd gear and 4th gear.
• It is a multi-disc clutch and is contained in the forward/coast/direct clutch cylinder component.
Reverse Clutch
• The reverse clutch connects the turbine shaft to the reverse/overdrive sun gear and shell component when it is in reverse gear.
• It is a multi-disc clutch, and is contained in the reverse clutch drum component.
Coast Clutch
• The coast clutch is a multi-disc clutch located beneath the forward clutch in the forward/coast/direct clutch cylinder component.
• It connects the low/intermediate sun gear component to the turbine shaft component when the O/D OFF switch is ON with the selector lever in D range or when any manual gear is selected.
Low/Reverse Clutch
• The low/reverse clutch holds the reverse/overdrive carrier component to the transaxle case when the selector lever is shifted into the R position or 1 range.
• The low/reverse clutch is splined to the transaxle case and is a multi-disc clutch.
Forward One-Way Clutch
• The forward one-way clutch is a sprag type, one-way clutch.
• The forward one-way clutch combines with the forward clutch to connect the turbine shaft component to the low/intermediate sun gear component in 1st gear, 2nd gear, and 3rd gear.
• The forward one-way clutch overruns during all coasting operations and is always overrunning in 4th gear.
Low One-Way Clutch
• The low one-way clutch is a roller type one-way clutch which allows the transaxle case to hold the reverse/overdrive carrier stationary when the transaxle is in 1st gear.
• The low one-way clutch will only hold the reverse/overdrive carrier component during acceleration. When coasting, the low one-way clutch will overrun, disconnecting the final drive from the compound planetary gear set.
Clutch/Band Application Chart (reference)
|
Gear
|
2/4 Intermediate/overdrive Band
|
Reverse Clutch
|
Direct Clutch
|
Forward Clutch
|
Forward One-way Clutch Drive
|
Forward One-way Clutch Coast
|
Coast Clutch
|
Low/Reverse Clutch
|
Low One-way Clutch Drive
|
Low One-way Clutch Coast
|
|
REV
|
|
X
|
|
|
|
|
|
X
|
|
|
|
1GR
|
|
|
|
X
|
X
|
OR
|
|
|
X
|
OR
|
|
2GR
|
X
|
|
|
X
|
X
|
OR
|
|
|
OR
|
OR
|
|
3GR
|
|
|
X
|
X
|
X
|
OR
|
|
|
OR
|
OR
|
|
4GR
|
X
|
|
X
|
X
|
OR
|
OR
|
|
|
OR
|
OR
|
|
M-3GR
|
|
|
X
|
X
|
X
|
|
X
|
|
OR
|
OR
|
|
M-2GR
|
X
|
|
|
X
|
X
|
|
X
|
|
OR
|
OR
|
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M-1GR
|
|
|
|
X
|
X
|
|
X
|
X
|
X
|
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-
X :
Transmits torque
-
OR :
Overrunning