transmission oil LEXUS SC400 1991 Service Owner's Manual

EG115±06
IDLE SPEED INSPECTION
1. INITIAL CONDITIONS
(a) Engine at normal operating temperature
(b) Air cleaner installed
(c) All pipes and hoses of air induction system connected
(d) All accessories switched OFF
(e) All vacuum lines properly connectedHINT: All vacuum hoses for EGR system, etc. should be prop-
erly connected.
(f) MFI system wiring connectors fully plugged
(g) Ignition timing set correctly
(h) Transmission in neutral position
2. CONNECT TACHOMETER Connect the tester probe of a tachometer to terminal IG
of
the DLC1.
HINT: Set the tachometer to the 4±cylinder range.
NOTICE:
w Never allow the tachometer terminal to touch ground as
it could result in damage to the igniter and/or ignition
coil.
w As some tachometers are not compatible with this
ignition system, we recommend that you confirm the
compatibility of your unit before use.
3. INSPECT IDLE SPEED
(a) Race the engine speed at 2,500 rpm for approx. 90 seconds.
(b) Check the idle speed.
Idle speed:
700 + 50 rpm
If the idle speed is not as specified, check the IAC valve.
4. DISCONNECT TACHOMETER
EG±34
±
1UZ±FE ENGINE ENGINE MECHANICAL
WhereEverybodyKnowsYourName

(c) Disconnect the following hoses:(1) 2 oil cooler hoses (for cooling fan) from pipes
(2) 2 radiator hoses
(3) 2 oil cooler hoses (for transmission) from radiator
HINT: Plug the hose ends.
(4) Suction hose from hydraulic pump
(5) Pressure hose from hydraulic pump
(d) Remove the 2 bolts, screw and upper radiator support. Remove the 2 upper radiator supports.
±
1UZ±FE ENGINE ENGINE MECHANICALEG±47
WhereEverybodyKnowsYourName

20. REMOVE DISTRIBUTOR CAPSLoosen the 3 bolts, and remove the distributor cap.
Remove the 2 distributor caps.
HINT: Arrange the distributor caps (RH side and LH side).
21. REMOVE DISTRIBUTOR ROTORS Loosen the 2 bolts, and remove the distributor rotor.
Remove the 2 distributor rotors.
HINT: Arrange the distributor rotors (RH side and LH side).
22. REMOVE DISTRIBUTOR HOUSINGS
(a) RH Distributor Housing: Disconnect the camshaft position sensor connector.
(b) Remove the 3 bolts and distributor housing. Remove the 2 distributor housings.
23. REMOVE GENERATOR
(a) Disconnect the generator connector.
(b) Remove the cap and nut, and disconnect the generator wire.
(c) Remove the bolt, and disconnect the transmission oil cooler pipe bracket from the generator.
(d) Remove the nut and generator.
24. REMOVE DRIVE BELT TENSIONER Remove the bolt, 2 nuts and belt tensioner.
EG±52
±
1UZ±FE ENGINE ENGINE MECHANICAL
WhereEverybodyKnowsYourName

19. INSTALL DRIVE BELT TENSIONERInstall the belt tensioner with the bolt and 2 nuts.
Torque: 16 N Vm (160 kgf Vcm, 12 ft Vlbf)
HINT: Use bolt 106 mm (4.18 in.) in length.
20. INSTALL GENERATOR
(a) Install the generator and transmission oil cooler pipe bracket with the bolt and nut.
Torque: 37 N Vm (380 kgf Vcm, 27 ft Vlbf)
(b) Connect the generator connector.
(c) Connect the generator wire with the nut and cap.
21. INSTALL RH DISTRIBUTOR HOUSING
Install the distributor housing with the 3 bolts.
Torque: 18 N Vm (185 kgf Vcm, 13 ft Vlbf)
HINT:
w The RH distributor housing is marked with ªRº.
w Each bolt length is indicated in the illustration.
Bolt length:
38 mm (1.50 in.) for A
96 mm (3.78 in.) for B
22. INSTALL LH DISTRIBUTOR HOUSING Install the distributor housing with the 3 bolts.
Torque: 18 N Vm (185 kgf Vcm, 13 ft Vlbf)
HINT:
w The LH distributor housing is marked with ªLº.
w Each bolt length is indicated in the illustration.
Bolt length:
38 mm (1.50 in.) for A
80 mm (3.15 in.) for B
23. INSTALL DISTRIBUTOR ROTORS
(a) Align the protrusion of the distributor rotor with the groove the
camshaft timing pulley.
(b) Install the distributor rotor with the 2 bolts. Install the 2 distributor rotors.
Torque: 3.8 N Vm (39 kgf Vcm, 34 in. Vlbf)
±
1UZ±FE ENGINE ENGINE MECHANICALEG±65
WhereEverybodyKnowsYourName

(e) Connect the following hoses:(1) 2 oil cooler hoses (for cooling fan) to pipes
(2) 2 radiator hoses
(3) 2 oil cooler hoses (for transmission) to radiator
(4) Suction hose to hydraulic pump
(5) Pressure hose to hydraulic pump
(f) Connect the ECT sensor connector (for cooling fan).
(g) Install the ECT sensor wire clamp to the radiator fan shroud.
±
1UZ±FE ENGINE ENGINE MECHANICALEG±71
WhereEverybodyKnowsYourName

(b) Remove the nut and 3 bolts, and disconnect the PS pumpfrom the engine.
5. REMOVE TWC (FRONT)
(a) Remove the 4 bolts holding the pipe support bracket to the transmission.
(b) Remove the 4 bolts and nuts holding the front exhaust pipe to the TWC, and remove the pipe support bracket.
(c) Disconnect the front exhaust pipe from the TWC, and remove
the 2 gaskets.
(d) Using a 14 mm deep socket wrench, remove the 3 nuts, TWC
and gasket. Remove the 2 TWC.
6. REMOVE THROTTLE BODY COVER
(a) Disconnect the EVAP hose from the hose clamp.
(b) Remove the cap nut.
(c) Loosen the 2 bolts, and remove the hose clamp and throttle body cover.
7. DISCONNECT CONTROL CABLES FROM THROTTLE BODY
Disconnect the following cables:
(1) Accelerator cable
(2) Transmission throttle control cable
(3) Cruise control actuator cable
8. REMOVE RH IGNITION COIL
(a) Disconnect the ignition coil connector.
(b) Remove the 2 bolts and ignition coil.
EG±76
±
1UZ±FE ENGINE ENGINE MECHANICAL
WhereEverybodyKnowsYourName

30. REMOVE OIL DIPSTICK AND GUIDE FORTRANSMISSION
(a) Remove the bolt holding the oil dipstick to the LH cylinder head.
(b) Pull out the dipstick guide together with the dipstick from the oil pan.
(c) Remove the O±ring from the dipstick guide.
31. REMOVE OIL DIPSTICK AND GUIDE FOR ENGINE
32. REMOVE EGR PIPE
(a) Remove the 2 bolts holding the EGR pipe to the RH exhaust pipe.
(b) Remove the EGR pipe and gasket.
33. DISCONNECT ENGINE WIRE FROM CYLINDER HEADS
(a) Remove the 2 bolts, and disconnect the engine wire protector
from the RH cylinder head.
(b) Remove the bolt, and disconnect the ground strap from the RH cylinder head.
(c) Remove the 5 bolts, and disconnect the engine wire protector
from the LH cylinder head.
34. REMOVE ENGINE HANGERS Remove the 2 bolts and engine hanger. Remove the 2 engine
hangers.
±
1UZ±FE ENGINE ENGINE MECHANICALEG±85
WhereEverybodyKnowsYourName

(c) Install the engine wire protector to the LH cylinder head withthe 5 bolts.
14. INSTALL EGR PIPE Install a new gasket and EGR pipe to the RH exhaust man-
ifold with 2 new nuts.
Torque: 18 N Vm (185 kgf Vcm, 13 ft Vlbf)
15. INSTALL OIL DIPSTICK AND GUIDE FOR ENGINE
(a) Install a new O±ring to the dipstick guide.
(b) Apply soapy water to the O±ring.
(c) Push in the dipstick guide end into the guide hole of the No.1
oil pan.
(d) Install the dipstick guide with the bolt.
(e) Install the dipstick.
16. I N S TA L L O I L D I P S T I C K A N D G U I D E F O R TRANSMISSION
17. INSTALL REAR WATER BYPASS JOINT
(a) Install 2 new gaskets and the water bypass joint with the 4 nuts. Alternately tighten the nuts.
Torque: 18 N Vm (185 kgf Vcm, 13 ft Vlbf)
(b) Install the water bypass pipe to the LH rear engine hanger
with the bolt.
18. INSTALL FRONT WATER BYPASS JOINT
(a) Install 2 new gaskets and the water bypass joint with the 4 nuts. Alternately tighten the nuts.
Torque: 18 N Vm (185 kgf Vcm, 13 ft Vlbf)
±
1UZ±FE ENGINE ENGINE MECHANICALEG±123
WhereEverybodyKnowsYourName

(g) Connect the water bypass hose to the IAC valve.
38. INSTALL RH IGNITION COIL
(a) Install the ignition coil with the 2 bolts.
(b) Connect the ignition coil connector.
39. CONNECT CONTROL CABLES TO THROTTLE BODYConnect the following cables:
(1) Accelerator cable
(2) Transmission throttle control cable
(3) Cruise control actuator cable
40. INSTALL THROTTLE BODY COVER
(a) Install the thro ttle body cover and hose clamp with the cap nut
and 2 bolts.
(b) Install the EVAP hose to the hose clamp.
41. INSTALL POWER STEERING (PS) PUMP
(a) Install the PS pump with the nut and 3 bolts. Alternately tighten the bolts and nut.
Torque:
39 NVm (400 kgf Vcm, 29 ft Vlbf) for bolt
43 N Vm (440 kgf Vcm, 32 ft Vlbf) for nut
EG±134±
1UZ±FE ENGINE ENGINE MECHANICAL
WhereEverybodyKnowsYourName

(3) 2 oil cooler hoses (for transmission) from radiator
HINT: Plug the hose ends.
(4) Suction hose from hydraulic pump
(5) Pressure hose from hydraulic pump
(d) Remove the 2 bolts, screw and upper radiator support. Remove the 2 upper radiator supports.
(e) Slightly lift the radiator, and disconnect the 2 oil cooler hoses (for cooling fan) from the hose clamp on the radiator fan
shroud.
(f) Remove the radiator assembly.
(g) Remove the 2 lower radiator supports from the radiator.
14. DISCONNECT IGNITER CONNECTORS
(a) Disconnect the 2 igniter connectors.
(b) Disconnect the wire clamp from the body.
EG±142
±
1UZ±FE ENGINE ENGINE MECHANICAL
WhereEverybodyKnowsYourName