1991 LEXUS SC400 Service Repair Manual

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Page 361 of 4087

$LEXUS SC400 1991 Service Repair Manual SERVICE SPECIFICATIONS SERVICE DATA AT0GH±02 Line pressure (wheel locked)\ \ $

SERVICE SPECIFICATIONS
SERVICE DATA
AT0GH±02 Line pressure (wheel locked)\
\

\
\
382±441 kPa 3.9±4.5 kgf/cm255±64 psi
Engine idling D position\
\

\
\
637±716 kPa 6.5±7.3 kgf/cm292±104 psi
R position\
\

\
1,265±1,402 kPa 12.9±14.3 kgf/cm2183±203 psi AT stall (Throttle valve opened) D position\
\

\
\
1,726±2,060 kPa 17.6±21.0 kgf/cm2250±298 psi R position\
\

ECM SLN termina lNot ground\
\
177±255 kpa 1.8±2.6 kgf/cm226±37 psi
Ground\
\
0
Engine stall revolution\
\
2,200+150 RPM
Time lag N position " D position\
\
Less than 1.2 seconds
N position " R position\
\
Less than 1.5 seconds
Engine idle speed (Cooling fan and A/C OFF
)N position\
\
650 RPM
\
\
Boot end face and inner cable stopper Throttle cable adjustment (Throttle valve fully closed)\
\

\
\
0±1 mm 0±0.04 in.
Torque converter clutch installing (Correct distance)\
\
17.1mm 0.673 in.
Drive plate runout Limit\
\
0.20 mm 0.0079 in.
SHIFT POINT (Kick±down foot switch activated)
Shift position Shifting point Vehicle speed km/h (mph)2
Throttle valve fully opened 1"2 67±71 (42±44)
2" 3 118±124 (73±77)
3" O/D (NORM) 170±177 (106±110)
3" O/D (PWR) 179±186 (111±116)
D position (NORM or PWR) O/D "3 164±170 (102±106)
3" 2 105±111 (65±69) 2" 1 53±57 (33±35)

2 iti

Throttle valve fully opened 1
"2

67±71 (42±44)
2 position
(NORM or PWR) 3
" 2 106±112 (66±70)

(NORM or PWR)
2" 1 53±57 (33±35)
L position Throttle valve fully opened 3 "2 104±109 (65±68)

L osition
(NORM or PWR) 2" 1 57±63 (35±39)
±
A340E (1UZ±FE) AUTOMATIC TRANSMISSION SERVICE SPECIFICATIONSAT±121
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Page 362 of 4087

LEXUS SC400 1991 Service Repair Manual
SHIFT POINT (Kick±down foot switch deactivated)
Shift position Shifting point Vehicle speed km/h (mph)

SHIFT POINT (Kick±down foot switch deactivated)
Shift position Shifting point Vehicle speed km/h (mph)

Throttle valve fully opened 1
"2

67±71 (42±44)
2
" 3 118±124 (73±77)
3" O/D 155±161 (96±100)
D position O/D "3 128±134 (79±83)

D osition
(NORM) 3" 2 71±75 (44±47)
2" 1 10±13 (6±8)
Throttle valve fully closed 3 "O/D 32±35 (20±22) O/D "3 23±26 (14±16)

Throttle valve fully opened 1
"2

67±71 (42±44)
2
" 3 118±124 (73±77)
3" O/D 179±186 (111±116)
D position O/D "3 149±155 (93±96)

D osition
(PWR) 3" 2 95±100 (59±62)
2" 1 22±26 (14±16)
Throttle valve fully closed 3 "O/D 32±35 (20±22) O/D "3 23±26 (14±16)

2 iti

Throttle valve fully opened 1
"2

67±71 (42±44)
2 position
(NORM or PWR) 3
" 2 106±112 (66±70)

(NORM or PWR)
2" 1 10±13 (6±8)
L position Throttle valve fully opened 3 "2 104±109 (65±68)

L osition
(NORM or PWR) 2" 1 57±63 (35±39)
LOCK±UP POINT

D position km/h (mph)
Throttle valve opening 5%

Lock±up ON

Lock±up OFF
3rd Gear (O/D switch OFF) 83±88 (52±55) 77±82 (48±51)
O/D Gear 56±60 (35±37)1 53±57 (33±35)
AT±122±
A340E (1UZ±FE) AUTOMATIC TRANSMISSION SERVICE SPECIFICATIONS
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Page 363 of 4087

$LEXUS SC400 1991 Service Repair Manual TORQUE SPECIFICATION AT07F±04\ \ Part tightened NVm kgf Vcm ft Vlbf\ \ $

TORQUE SPECIFICATION
AT07F±04\
\
Part tightened NVm kgf Vcm ft Vlbf\

\

\
Engine x Transmission

64

650

47
\
\
Rear mounting x Body 25 260 19
\
\
Rear mounting x Extension housing 25 250 18
\
\
Transmission housing x Transmission case 14 mm (0.55 in.) 34 345 25
\
\
17 mm (0.67 in.) 57 580 42
\
\
Extension housing x Transmission case 34 345 25
\
\
Valve body x Transmission case 10 100 7
\
\
Oil strainer 10 100 7
\
\
Oil pan 7.4 75 65 in.
Vlbf\
\
No.1 vehicle speed sensor 16 160 12\

\

\
No.2 vehicle speed sensor

5.4

55

48 in.
Vlbf
\
\
Solenoid wiring stopper plate 5.4 55 48 in. Vlbf
\
\
O/D direct clutch speed sensor 5.4 55 48 in. Vlbf
\
\
Transmission output flange 123 1,250 90
\
\
Throttle cable x Transmission case 5.4 55 48 in. Vlbf
\
\
Union 29 300 22
\
\
Cooler pipe union nut 34 350 25
\
\
Drive plate x Crankshaft 99 1,000 72
\
\
Torque converter clutch x Drive plate 33 340 25\
\
Park/Neutral position switch Bolt 13 130 9\
\
Nut 6.9 70 61 in. Vlbf\

\

\
Control shaft lever

16

160

12
±
A340E (1UZ±FE) AUTOMATIC TRANSMISSION SERVICE SPECIFICATIONSAT±123
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Page 364 of 4087

LEXUS SC400 1991 Service Repair Manual
A340E (1UZ±FE)
AUTOMATIC TRANSMISSION
AT±1
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Page 365 of 4087

$LEXUS SC400 1991 Service Repair Manual DESCRIPTION GENERAL DESCRIPTION AT0GE±02 The A340E automatic transmission is a 4±speed Electronically Controlled \ Transmission with an intelligent control like the A341E automatic transmission use$

Page 366 of 4087

$LEXUS SC400 1991 Service Repair Manual Type of Transmission A340E \ \ Type of Engine61UZ±FE $

Type of Transmission A340E
\
\
Type of Engine61UZ±FE
\

\

\
Torque Converter Clutch Stall Torque Ratio1.900 :1
\
\
Torque Converter Clutch Lock±up MechanismEquipped
Gear Ratio 1st Gear 2.804
2nd Gear 1.531

3rd Gear

1.000
O/D Gear 0.705
Reverse Gear 2.393

Number of Discs/Plates
O/D Direct Clutch (C0)
2 / 2

Forward Clutch (C1)

6 / 6
Direct Clutch (C2) 4 / 4
2nd Brake (B0) 5 / 5

1st & Reverse Brake (B2)

7 / 7
O/D Brake (B0) 5 / 4
2nd Coast Brake (B) Band Width mm (in.) 40 (1.57)
ATF TypeATF Type T±II or equivalent

Capacity liter (US qts, lmp. qts)

Total

8.2 (8.7, 7.2)
Drain & Refill 1.9 (2.0, 1.7)
±
A304E (1UZ±FE) AUTOMATIC TRANSMISSION DESCRIPTIONAT±3
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Page 367 of 4087

LEXUS SC400 1991 Service Repair Manual
OPERATION
AT06S±04
AT±4±
A304E (1UZ±FE) AUTOMATIC TRANSMISSION OPERATION
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Page 368 of 4087

$LEXUS SC400 1991 Service Repair Manual *: Down±shift only 2nd gear in the L position and 3rd gear in the 2 position no up±\ shift : Operating ± A304E (1UZ±FE) AUTOMATIC TRANSMISSION OPERATIONAT±5 WhereEverybodyKnowsYourName$

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