YH4
GRAND
VITARA
AUTOMATIC TRANSMISSION (4 A/T) 7B1-5
1. Overdrive clutch
2. Overdrive brake
3. Forward clutch
4. Direct clutch
5. Second coast brake
6. Second brake
7. Reverse brake
8. One-way clutch No.2
9. One-way clutch No.1
10. Overdrive one-way clutch
11. Overdrive input shaft
12. Forward clutch input shaft
13. Intermediate shaft
CLUTCH/BRAKE FUNCTIONS
Part Name Function
Overdrive clutch Meshes overdrive carrier and overdrive sun gear.
Overdrive brake Fixes overdrive sun gear.
Overdrive one-way clutch Meshes overdrive carrier and overdrive sun gear only when driven
by engine.
Forward clutch Meshes input shaft and intermediate shaft.
Direct clutch Meshes input shaft with front sun gear and rear sun gear.
Second coast brake Fixes front sun gear and rear sun gear.
Second brake Fixes outer race of one-way clutch No.1, to prevent front sun gear
and rear sun gear from turning counterclockwise (reverse direction
of engine input rotation direction).
Reverse brake Fixes front planetary carrier.
One-way clutch No.1 Prevents front sun gear and rear sun gear from turning counterclockwise
only when second brake is at work.
One-way clutch No.2 Prevents front planetary carrier from turning counterclockwise.
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