7B-4 AUTOMATIC TRANSMISSION (4 A/T)
Specifications
Item Specifications
Torque
converter
Type
Stall torque ratio
3-element, 1-step, 2-phase type
1.65 – 1.85
Oil pump
Ty p e
Drive system
Internal gear type oil pump
Engine driven
Gear
change
device
Type Forward 4-step, reverse 1-step planetary gear type
Shift position
“P” range Gear in neutral, output shaft fixed, engine start
“R” range Reverse
“N” range Gear in neutral, engine start
“D” range
(O/D ON)
Forward 1st ↔ 2nd ↔ 3rd ↔ 4th (O/D)
automatic gear change
“D” range
(O/D OFF)
Forward 1st ↔ 2nd ↔ 3rd ← 4th
automatic gear change
“2” range Forward 1st ↔ 2nd ← 3rd automatic gear change
“L” range Forward 1st ← 2nd reduction, and fixed at 1st gear
Gear
ratio
1st 2.962
2nd 1.515 Number of teeth Front sun gear : 34
Rear sun gear : 21
Front pinion gear : 16
Rear pinion gear : 19
Front internal gear : 66
Rear internal gear : 59
3rd 1.000
4th
(overdrive gear)
0.737
Reverse
(reverse gear
2.809
Control elements
Wet type multi-disc clutch ... 3 sets
One-way clutch ... 1 set
Wet type multi-disc brake ... 3 sets
Reduction gear ratio 1.209
Final gear ratio
(Differential)
3.578
Lubrication Lubrication system Force feed system by oil pump
Cooling Cooling system Water-cooled
Fluid used
Equivalent of DEXRON
-III
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