Page 307 of 4592
AUTOMATIC TRANSAXLEDESCRIPTION ±
AX±1
DESCRIPTION
GENERAL SPECIFICATIONS
Type of TransaxleA541E
Type of Engine1MZ±FE
Torque Converter Clutch Stall Torque Ratio1.8 : 1
Torque Converter Clutch Lock±up MechanismEquipped
Gear Ratio 1st Gear
2nd Gear
3rd Gear
O/D Gear
Reverse Gear2.810
1.549
1.000
0.735
2.296
Transaxle Number of Discs and Plates
O/D Direct Clutch (C
0)
Forward Clutch (C
1)
Direct Clutch (C
2)
2nd Brake (B
2)
First and Reverse Brake (B
3)
O/D Brake (B
0)
2 / 2
5 / 5
3 / 3
3 / 3
6 / 6
3 / 3
B1 Band Width mm (in.)25 (0.98)
ATF TypeATF D±@@@@@: [g 2] or DEXRON®@@@@@: [g
3](DEXRON®@@@@@: [g 2])
Capacity liter (US qts, Imp.qts) A/T
D/F6.75(7.1, 5.9)
0.85 (0.9, 0.7)
AX0CH±05
Page 310 of 4592
AUTOMATIC TRANSAXLEOPERATION ±
AX±4
Power from the engine transmitted to the input shaft via the torque converter clutch is then transmitted
to the planetary gears by the operation of the clutch.
By operation of the brake and one±way clutch, either the planetary carrier or the planetary sun gear
are immobilized, altering the speed of revolution of the planetary gear unit.
Shift change is carried out by altering the combination of clutch and brake operation.
Each clutch and brake operates by hydraulic pressure; gear position is decided according to the throttle
opening angle and vehicle speed, and shift change automatically occurs.
The conditions of operation for each gear position are shown on the following illustrations:
Page 311 of 4592
AUTOMATIC TRANSAXLEOPERATION ±
AX±5
3. HYDRAULIC CONTROL SYSTEM
The hydraulic control system is composed of the oil pump, the valve body, the solenoid valves, the accu-
mulators, the clutches and brakes as well as the fluid passages which connect all of these components.
Based on the hydraulic pressure created by the oil pump, the hydraulic control system governs the hy-
draulic pressure acting on the torque converter clutch, clutches and brakes in accordance with the ve-
hicle driving conditions.
There are three solenoid valves on the valve body.
The No.1 and No.2 solenoid vales are turned on and off by signals from the ECM to operate the shift
valves and change the gear shift position.
The SL solenoid valve is operated by signals from the ECM to engage or disengage the lock±up clutch
of the torque converter clutch.
The SLN solenoid valve is operated by signals from the ECM to control the engagement speed and
reduce gear shift shock.
AX01A±0B
Page 314 of 4592
AUTOMATIC TRANSAXLEPREPARATION ±
AX±8
EQUIPMENT
Feeler gaugeCheck major clearance.
Vernier calipersCheck length of second coast
brake piston rod.
Dial indicator with magnetic baseCheck piston stroke and end play
of the output shaft.
Dial indicatorCheck inside diameter of
major bushing.
Straight edgeCheck side clearance of oil pump.
Torque wrench
LUBRICANT
ItemCapacityClassification
Automatic transaxle fluid:
Dry fill
Drain and refill
6.75 liters (7.10 US qts, 5.94 Imp.qts)
2.5 liters (2.6 US qts, 2.2 Imp.qts)
ATF D±@@@@@: [g 2] or
DEXRON®@@@@@: [g
3](DEXRON®@@@@@: [g 2])
Differential oil0.85 liters (0.89 US qts, 0.75 Imp.qts)
ATF D±@@@@@: [g 2] or
DEXRON®@@@@@: [g
3](DEXRON®@@@@@: [g 2])
SSM (SPECIAL SERVICE MATERIALS)
08826±00090Seal Packing 1281,
THREE BOND 1281 or equivalent
(FIPG)Differential LH bearing retainer
Differential RH retainer
08833±00070Adhesive 1324,
THREE BOND 1324 or equivalentDifferential RH retainer set bolt
AX02N±02
AX01V±08
AX02P±02
Page 323 of 4592
AUTOMATIC TRANSAXLECOMPONENT PARTS REMOVAL ±
AX±17
17. REMOVE SOLENOID WIRING
Remove the bolt and the solenoid wiring.
18. REMOVE SECOND BRAKE APPLY GASKET
19. REMOVE ACCUMULATOR PISTONS AND SPRINGS
(a) Loosen the 4 bolts one turn at a time until the spring ten-
sion is released.
(b) Remove the cover and gasket.
(c) Remove the C
1 accumulator piston and spring.
(d) Remove the 2 O±rings from the piston.
(e) Pop out pistons for C
2 and B2 into a rag, using low±pres-
sure compressed air (98 kPa, 1 kgf/cm
2, 14 psi).
(f) Remove the O±rings from the pistons.
Page 324 of 4592
AUTOMATIC TRANSAXLECOMPONENT PARTS REMOVAL ±
AX±18
20. MEASURE PISTON STROKE SECOND COAST
BRAKE
(a) Apply a small amount of paint to the piston rod at the point
it meets the case.
(b) Using SST, measure the piston stroke while applying and
releasing compressed air (392±785 kPa, 4±8 kgf/cm
2,
57±114 psi).
SST 09240±00020
Maximum thrust clearance:
2.0±3.5 mm (0.079±0.138 in.)
If the piston stroke exceeds the limit, inspect the second
coast brake band.
21. REMOVE SECOND COAST BRAKE PISTON
(a) Using SST, remove the snap ring.
SST 09350±32014
(b) Applying compressed air to the oil hole, remove the se-
cond coast brake cover, piston assembly and spring.
(c) Remove the 2 O±rings from the cover.
Page 325 of 4592
AUTOMATIC TRANSAXLECOMPONENT PARTS REMOVAL ±
AX±19
22. STAND TRANSAXLE ENGINE SIDE UPWARD
23. REMOVE OIL PUMP
NOTICE: Before removing the oil pump, remove the se-
cond coast brake piston.
(a) Remove the 7 bolts.
(b) Using SST, pull out the oil pump from the transaxle case.
SST 09350±32014
24. REMOVE O±RING FROM OIL PUMP
25. REMOVE DIRECT CLUTCH AND FORWARD CLUTCH
26. SEPARATE DIRECT CLUTCH AND FORWARD
CLUTCH
(a) Separate the direct clutch and forward clutch.
(b) Remove the thrust washer from direct clutch.
Page 326 of 4592
AUTOMATIC TRANSAXLECOMPONENT PARTS REMOVAL ±
AX±20
27. REMOVE BEARING FROM FORWARD CLUTCH
28. REMOVE SECOND COAST BRAKE BAND
(a) Push the pin with a small screwdriver and remove it from
the bolt hole of the oil pump mounting.
(b) Remove the brake band.
29. REMOVE FRONT PLANETARY RING GEAR
30. REMOVE FRONT PLANETARY GEAR
(a) Remove the front planetary gear.
(b) Remove the 2 bearings from the planetary gear.