1991 LEXUS SC400 width

wAlways tie down the steering wheel pad with the pad
side facing upward. It is very dangerous if the steer-
ing wheel pad is tied down with the metal surface
facing upward as the wire harness will be cut by the
shock of the airbag deploying and the steering
wheel pad will be thrown into the air.
HINT:
w The disc wheel will be marked by airbag deployment, so
use a redundant disc wheel.
4. CONFIRM FUNCTIONING OF SST (SEE PAGE AB±94)
SST 09082±0700
5. INSTALL SST CAUTION: Place the disc wheel on level ground.
(a) Connect the SST connector to the steering wheel pad
connector.
SST 09082±00700
NOTICE: To avoid damaging the SST connector and wire
harness, do not lock the secondary lock of the twin lock.
Also, provide some slack for the SST wire harness inside
the disc wheel.
(b) Move the SST to at least 10 m (33 ft) away from the steering wheel pad tied down on the disc wheel.
6. COVER STEERING WHEEL PAD WITH CARDBOARD BOX OR TIRES
(Covering Method Using Cardboard Box)
Cover the steering wheel pad with the cardboard box and
weigh the cardboard box down in four places with a at least
20 kg (44 lb, 196 N).
Size of cardboard box: Must exceed the following dimen-
sions ±x = 460 mm (18.11 in.)
When dimension y of the cardboard box exceeds
the diameter of the disc wheel with tire the steering
wheel pad is tied to±
x = 460 mm (18.11 in.) + width of tire
y = 650 mm (25.59 in.)
NOTICE: If a cardboard box smaller than the size speci-
fied is used, the cardboard box will be broken by the
shock of the airbag deployment.
±
SRS AIRBAG Disposal of Steering Wheel Pad (with Aribag)AB±95
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(Covering Method Using Tires)
Place at least three tires without disc wheel on top of the disc
wheel with tire to which the steering wheel pad is tied.
Tire size: Must exceed the following dimensions ±Width 185 mm (7.28 in.)
Inner diam 360 mm (14.17 in.)
CAUTION: Do not use tires with disc wheels.
NOTICE: The tires may be marked by the airbag deploy-
ment, so use redundent tires.
7. AIRBAG DEPLOYMENT (a) Connect the SST red clip to the battery positive (+)terminal and the black clip to the battery negative (±)
terminal.
(b) Confirm that no±one is within 10 m (33 ft) of the disc wheel the steering wheel pad is tied to.
(c) Press the SST activation switch and deploy the airbag.
HINT: The airbag deploys simultaneously as the LED of the
SST activation switch lights up.
8. DISPOSAL OF STEERING WHEEL PAD (WITH AIRBAG) CAUTION:
w The steering wheel pad is very hot when the airbag is
deployed, so leave it alone for at least 30 minutes after de-
ployment.
w Use gloves and safety glasses when handling a steering
wheel pad with deployed airbag.
w Do not apply water, etc. to a steering wheel pad with
deployed airbag.
w Always wash your hands with water after completing the
operation.
(a) Remove the steering wheel pad from the disc wheel.
(b) Place the steering wheel pad in a vinyl bag, tie the end
tightly and dispose of it the same way as other general
parts.
AB±96
±
SRS AIRBAG Disposal of Steering Wheel Pad (with Aribag)
WhereEverybodyKnowsYourName

3. PROTECT JOINED SECTIONWrap silicon tape around the joins to protect them from water.
HINT:
wBefore starting the operation, thoroughly wipe dirt and
grease off the sections to be joined.
wIf the adhesive surfaces of two tapes come in contact
they will stick together and will not come apart, so do not
remove the backing film except when using the tape.
wDo not let oil and dust, etc. get on the tape surface.
(a) Ready about 100 mm (3.94 in.) of silicon tape (Part No.
08231±00045) and peel off the film.
(b) Stretch the silicon tape until its width is reduced by half.
(c) About 10 mm (0.39 in.) from the end of the pressure±contact sleeve, wrap the silicon tape around
the sleeve three or more times while stretching the tape.
(d) Wrap the remaining part of sleeve with half of the tape overlapping at each turn.
(e) Firmly wrap the tape two times or more about 10 mm (0.39 in.) from the other end of the pressure±contact
sleeve, then wrap the tape back towards the start again
and firmly finish winding the tape around the center of
the sleeve.
(f) Fix the corrugated tube to the cabtire cable using silicon tape.
(g) After applying the silicon tape, apply vinyl tape on the corrugated tube of repair wire side over to the
corrugated tube of vehicle wire harness side.
AB±22
SRS AIRBAG
± Replacement of Repair Wire for Front Airbag Sensor
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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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Compression at 250 rpm STD 1,226 kPa (12.5 kgf/cm2, 178 psi) or
more
 pressureLimit 981 kPa (10.0 kgf/cm2, 142 psi)  Difference of pressure between each cylinder  98 kPa (1.0 kgf/cm2, 14 psi) or less 

Timing belt
tensionerProtrusion from housing end10.5±11.5 mm (0.413±0.453 in.)
 Cylinder head Warpage Limit 0.10 mm (0.039 in.)
  Valve seat  
  Refacing angle  30
5, 45 5, 75 5
  Contacting angle  455
  Contacting width  1.0±1.4 mm (0.039±0.055 in.)
  Cylinder head bolt thread inside diameter STD 9.770±9.960 mm (0.3846±0.3921 in.)
   Limit 9.60 mm (0.3780 in.)
 Valve guideInside diameter6.010±6.030 mm (0.2366±0.2374 in.)
 bushing Outside diameter (for repair part) STD 11.048±11.059 mm (0.4350±0.4354
in.)
 O/S 0.05 11.098±11.109 mm (0.4369±0.4374 in.) ValveValve overall lengthSTD (Intake)94.95 mm (3.7382 in.)   (Exhaust) 96.90 mm (3.8150 in.)   Limit (Intake) 94.45 mm (3.7185 in.)   (Exhaust) 96.40 mm (3.7953 in.)
  Vale face angle  44.55
  Stem diameter Intake 5.970±5.985 mm (0.2350±0.2356 in.)
   Exhaust 5.965±5.980 mm (0.2348±0.2354 in.)
  Stem oil clearance STD (Intake) 0.025±0.060 mm (0.0010±0.0024 in.)
   (Exhaust) 0.030±0.065 mm (0.0012±0.0026 in.)
   Limit (Intake) 0.08 mm (0.0031 in.)
   (Exhaust) 0.10 mm (0.0039 in.)
  Margin thickness STD 1.0 mm (0.039 in.)
   Limit 0.5 mm (0.020 in.)
 Valve spring Squareness Limit 2.0 mm (0.079 in.)
  Free length  43.6 mm (1.717 in.)
  Installed tension at 32.9 mm (1.295 in.)  186±206 N (19.0±21.0 kgf, 41.9±46.3
lbf)
 

Valve lifter 

Lifter diameter 


 

30.966±30.976 mm (1.2191±2.2195
in.)
 


 


Lifter bore diameter 


 


31.000±31.016 mm (1.2205±1.2211
in.)
  Oil clearance STD 0.024±0.050 mm (0.0009±0.0020 in.)
   Limit 0.07 mm (0.0028 in.)
EG±206±
1UZ ± FE ENGINE ENGINE MECHANICAL
WhereEverybodyKnowsYourName

(d) Check the valve overall length.
Standard overall length:Intake94.95 mm (3.7382 in.)
Exhaust 96.90 mm (3.8150 in.)
Minimum overall length:
Intake94.45 mm (3.7185 in.)
Exhaust 96.40 mm (3.7953 in.)
If the overall length is less than minimum, replace the valve.
(e) Check the surface of the valve stem tip for wear. If the valve stem tip is worn, resurface the tip with a grinder
or replace the valve.
NOTICE: Do not grind off more than minimum.
8. INSPECT AND CLEAN VALVE SEATS
(a) Using a 45
carbide cutter, resurface the valve seats.
Remove only enough metal to clean the seats.
(b) Check the valve seating position. Apply a light coat of prussian blue (or white lead) to the valve
face. Lightly press the valve against the seat. Do not rotate
valve.
(c) Check the valve face and seat for the following: wIf blue appears 360
around the face, the valve is
concentric. If not, replace the valve.
w If blue appears 360
around the valve seat, the guide
and face are concentric. If not, resurface the seat.
w Check that the seat contact is in the middle of the valve
face with the following width:
1.0 ± 1.4 mm (0.039 ± 0.055 in.)
If not, correct the valve seats as follows:
(1) If the seating is too high on the valve face, use 30 5 and 45 5
cutters to correct the seat.
EG±100
±
1UZ±FE ENGINE ENGINE MECHANICAL
WhereEverybodyKnowsYourName

CYLINDER BLOCK ASSEMBLY
EG1KW±01
(See Components for Cylinder block Disassembly and As-sembly)
HINT:
wThoroughly clean all parts to be assembled.
w Before installing the parts, apply new engine oil to all
sliding and and rotating surfaces.
w Replace all gaskets. O±rings and oil seals with new
parts.
1. INSTALL MAIN BEARINGS HINT:
wMain bearings come in widths of 19.5 mm (0.768 in.) and
22.5 mm (0.886 in.). Install the 22.5 mm (0.886 in.)
bearings in the No.1 and No.5 cylinder block journal
positions with the main bearing cap. Install the 19.5 mm
(0.768 in.) bearings in the other positions.
w Upper bearings have an oil groove and oil holes lower
bearings do not.
(a) Align the bearing law with the claw groove of the cylinder block, and push in the 5 upper bearings.
(b) Align the bearing claw with the claw groove of the main bearing cap, and push in the 5 lower bearings.
HINT: A number is marked on each main bearing cap to indi-
cate the installation position.
2. INSTALL UPPER THRUST WASHERS Install the 2 thrust washers under the No.3 journal position of
the cylinder block with the oil grooves facing outward.
±
1UZ±FE ENGINE ENGINE MECHANICALEG±179
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ASSEMBLY OF CYLINDER BLOCK
(See Components on page EM±131)
HINT:
w Thoroughly clean all parts to be assembled.
w Before installing the parts, apply new engine oil to all
sliding and rotating surfaces.
w Replace all gaskets, O±rings and oil seals with new
parts.
1. INSTALL MAIN BEARINGS HINT:
wMain bearings come in widths of 19.5 mm (0.768 in.) and
22.5 mm (0.886 in.). Install the 22.5 mm (0.886 in.)
bearings in the No.1 and No.5 cylinder block journal
positions with the main bearing caps. Install the 19.5
mm (0.768 in.) bearings in the other positions.
w Upper bearings have an oil groove and oil holes; lower
bearings do not.
(a) Align the bearing claw with the claw groove of the cylinder block, and push in the five upper bearings.
(b) Align the bearing claw with the claw groove of the main bearing cap, and push in the five lower bearings.
HINT: A number is marked on each main bearing cap indicat-
ing the installation position.
2. INSTALL UPPER THRUST WASHERS Install the two thrust washers under the No.3 journal position
of the block with the oil grooves facing outward.
EM±156
±
ENGINE MECHANICAL Cylinder Block
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