LEXUS SC400 1991 Service Repair Manual

3. INSTALL DIPSTICK GUIDE FOR TRANSMISSION(a) Install a new O±ring to the dipstick guide.
(b) Apply soapy water to the O±ring.
(c) Connect the dipstick guide end to the tube of the oil pan,
and install the dipstick guide with the bolt.
(d) Install the dipstick.
4. CONNECT ENGINE WIRE TO TRANSMISSION (a) Connect the following connectors:(1) O/D direct clutch speed sensor connector
(2) No.1 speed sensor connector
(3) No.2 speed sensor connector
(4) Neutral start switch connector
(b) Install the five wire clamps to the brackets on the transmission.
EM±166±
ENGINE MECHANICAL Cylinder Block
WhereEverybodyKnowsYourName

INSTALLATION OF ENGINE
(See Components on pages EM±116 to 118)
1. INSTALL ENGINE AND TRANSMISSION ASSEMBLY IN VEHICLE
(a) Attach the engine hoist chain to the engine hangers.
(b) Lower the engine and transmission assembly into the
engine compartment.
CAUTION: Be careful not to hit the PS gear housing or
neutral start switch.
(c) Insert the stud bolts of the front engine m ounting
brackets into the stud bolt holes of the front suspension
crossmember.
(d) Keep the engine level.
(e) Install the rear engine mounting member with the four
bolts and four nuts with the front mark facing forward.
Install the ground strap.
Torque: Nut 13 N Vm (135 kgf Vcm, 10 ft Vlbf)
Bolt 25 N Vm (260 kgf Vcm, 19 ft Vlbf)
(f) In sta ll th e two nu ts ho ld in g th e en g in e m ounting
brackets to the front suspension crossmember.
Torque: 59 N Vm (600 kgf Vcm, 43 ft Vlbf)
3. CONNECT TRANSMISSION CONTROL ROD
Connect the control rod to the shift lever with the nut.
±
ENGINE MECHANICAL Cylinder BlockEM±167
WhereEverybodyKnowsYourName

4. INSTALL PROPELLER SHAFT(See PR section)
5. INSTALL CENTER FLOOR BRACE Install the brace with the four nuts.
Torque: 13 N Vm (130 kgf Vcm, 9 ft Vlbf)
6. INSTALL EXHAUST PIPE HEAT INSULATOR
Install the heat insulator with the four nuts.
7. INSTALL CENTER EXHAUST PIPE Install the two hooks of the exhaust pipe to the rings on the
exhaust pipe brackets.
8. INSTALL TAILPIPE (a) Install the tailpipe hook to the ring on the tailpipebrackets.
(b) Install a new gasket and the tailpipe to the center exhaust pipe with the two bolts. Install the two tailpipe.
Torque: 19 N Vm (195 kgf Vcm, 14 ft Vlbf)
EM±168±
ENGINE MECHANICAL Cylinder Block
WhereEverybodyKnowsYourName

9. INSTALL CATALYTIC CONVERTERS (MAIN)Install a new gasket and the catalytic converter with three
new nuts. Install the two catalytic converters.
Torque: 62 N Vm (630 kgf Vcm, 46 ft Vlbf)
10. INSTALL FRONT EXHAUST PIPE
(a) Temporarily install the pipe support stay with the fourbolts.
(b) Install three new gaskets, the exhaust pipe and pipe support stay with the six bolts and nuts.
Torque: 43 N Vm (440 kgf Vcm, 32 ft Vlbf)
(c) Tighten the four bolts holding the pipe support bracket
to the transmission.
Torque: 43 N Vm (440 kgf Vcm, 32 ft Vlbf)
(d) Install the two sub±oxygen sensors to the exhaust pipe.
Torque: 44 N Vm (450 kgf Vcm, 33 ft Vlbf)
HINT:
w Before installing the s ub±oxygen sensor, twist the
sensor wire counterclockwise 3 1/2 turns.
w After installing the sub±oxygen sensor, check that the
sensor wire is not twisted. If it is twisted, remove the
sub±oxygen sensor and reinstall it.
(e) Install the wire grommets to the floor.
11. CONNECT ENGINE WIRE TO CABIN (a) Push in the engine wire through the cowl panel.
(b) Install the engine wire clamp with the three bolts.
±
ENGINE MECHANICAL Cylinder BlockEM±169
WhereEverybodyKnowsYourName

(c) Connect the following connectors:(1) Two connectors to engine & ECT ECU
(2) Connectors to ABS & TRAC ECU
(3) Two connectors to TRAC ECU
(4) Four connectors to connector cassette
(5) Connector to A/C control assembly
(d) Install the engine & ECT ECU with the nut.
(e) Install the ECU protector with the two nuts.
(f) Install the floor carpet.
EM±170
±
ENGINE MECHANICAL Cylinder Block
WhereEverybodyKnowsYourName

(g) Install the scuff plate.
(h) Connect the connectors.
(i) Install the lower instrument panel finish panel and glovecompartment door assembly with the four screws.
(j) Install the instrument panel under cover with the two clips.
12. INSTALL CHARCOAL CANISTER (a) Install the charcoal canister.
(b) Connect the vacuum hose and air hose to the charcoalcanister.
13. CONNECT HOSES Connect the following hose and ground strap:(1) Heater water hose to water by±pass pipe
(2) Heater water hose to heater water valve
(3) Vacuum hose to brake booster union on air intake
chamber
(4) Vacuum hose (from VSV for heater water valve) to
air intake chamber
(5) Ground strap to bracket on body
±
ENGINE MECHANICAL Cylinder BlockEM±171
WhereEverybodyKnowsYourName

(6) Two fuel hoses to fuel tubes
14. INSTALL A/C COMPRESSOR (a) In sta ll th e A/C co mp re sso r, co mp re sso r sta y an dground cable with the nut and three bolts.
Torque: Bolt 49 N Vm (500 kgf Vcm, 36 ft Vlbf)
Nut 29 N Vm (300 kgf Vcm, 22 ft Vlbf)
(b) Connect the A/C compressor connector.
15. INSTALL PS PUMP Install the PS pump with the three bolts and nut. Alternately
tighten the bolts and nut.
Torque: Bolt 39 N Vm (400 kgf Vcm, 29 ft Vlbf)
Nut 43 N Vm (440 kgf Vcm, 32 ft Vlbf)
16. INSTALL PS RESERVOIR TANK AND BRACKET
Install the reservoir tank and bracket assembly with the three
bolts.
EM±172
±
ENGINE MECHANICAL Cylinder Block
WhereEverybodyKnowsYourName

17. INSTALL PS TUBESInstall the PS tube clamp with the bolt.
18. INSTALL ALTERNATOR (a) Install the alternator and A/T oil cooler pipe bracket withthe bolt and nut.
Torque: 37 N Vm (380 kgf Vcm, 27 ft Vlbf)
(b) Connect the alternator connector.
(c) Connect the alternator wire with the nut and cap.
19. INSTALL WIRE CLAMP (FOR ALTERNATOR) AND VSV (FOR EVAP SYSTEM)
(a) Install the wire clamp to the VSV bracket.
(b) Install the VSV with the two bolts.
20. CONNECT PS SOLENOID VALVE CONNECTOR
21. CONNECT ENGINE WIRE CONNECTORS
22. CONNECT THEFT DETERRENT HORN CONNECTOR
23. INSTALL GROUND CABLE TO BODY
±
ENGINE MECHANICAL Cylinder BlockEM±173
WhereEverybodyKnowsYourName

24. CONNECT IGNITER CONNECTOR(a) Connect the two igniter connectors.
(b) Install the wire clamp.
25. INSTALL RADIATOR (a) Install the two lower radiator supports to the radiator.
(b) Place the radiator on the body bracket.
(c) Slightly lift the radiator, and connect the two cooler hose(for cooling fan) to the hose clamp on the radiator fan
shrould.
(d) Install the upper radiator support with the two bolts and screw. Install the two upper radiator supports.
(e) Connect the following hoses: (1) Pressure hose to hydraulic pump
(2) Suction hose to hydraulic pump
EM±174
±
ENGINE MECHANICAL Cylinder Block
WhereEverybodyKnowsYourName

(3) Two oil cooler hoses (for A/T) to radiator
(4) Two radiator hoses
(5) Two oil cooler hoses (for cooling fan) to pipes
(f) Connect the water temperature sensor connector.
(g) Install the wire clamp (for water temperature sensor) to the radiator fan shrould.
26. INSTALL RADIATOR RESERVOIR TANK (a) Install the reservoir tank to the reservoir tank bracket.
(b) Install the reservoir tank bracket with the two bolts.
±
ENGINE MECHANICAL Cylinder BlockEM±175
WhereEverybodyKnowsYourName