horn LEXUS SC400 1991 Service User Guide

20. INSPECT VALVE CLEARANCE
(a) Check only the valves indicated.wUsing a feeler gauge, measure the clearance between
the valve lifter and camshaft
w Record the out±of±specification valve clearance
measurements. They will be used later to determine the
required replacement adjusting shim.
Valve clearance (Cold):
Intake0.15 ± 0.25 mm (0.006 ± 0.010 in.)
Exhaust 0.25 ± 0.35 mm (0.010 ± 0.014 in.)
(b) Turn the crankshaft 1 revolution (360
) and align the mark as
above. (See procedure in step 8)
(c) Check only the valves indicated as shown. Measure the valve
clearance. (See procedure in step (a))
21. REMOVE THEFT DETERRENT HORN
(a) Disconnect the connector.
(b) Remove the bolt and theft deterrent horn. HINT: Remove the deterrent horn when the valve clearance
is adjusted for the front portion of the exhaust camshaft on
the LH cylinder head.
EG±20
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23. REINSTALL THEFT DETERRENT HORN
(a) Install the theft deterrent horn with the bolt.
(b) Connect the connector.
24. REINSTALL RH CYLINDER HEAD COVER
(a) Remove any old packing (FIPG) material.
(b) Apply seal packing to the cylinder head as shown in theillustration.
Seal packing:Part No. 08826±00080 or equivalent
(c) Install the gasket to the cylinder head cover.
(d) Install the seal washer to the bolt.
(e) Install the cylinder head cover with the 8 bolts.
Torque: 5.9 N Vm (60 kgf Vcm, 52 in. Vlbf)
(f) Connect the 4 high±tension cords to the spark plugs.
(g) Connect the front high±tension cord clamp to the lower
high±tension cord cover.
(h) P l a c e t h e f r o n t h i gh±tension cord clamp to the rear
high±tension cord clamp.
(i) Install the 2 bolts holding the high±tension cord clamps to the
cylinder head cover.
(j) Connect the 5 high±tension cords to the front side of the front
high±tension cord clamp.
(k) Connect the No. 2 high±tension cord to the cord clamp on the
front high±tension cord clamp.
EG±26
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15. DISCONNECT ENGINE WIRE CONNECTORS
16. DISCONNECT THEFT DETERRENT HORN CONNECTOR
17. DISCONNECT GROUND CABLE FROM BODY
18. DIS CO NNE CT PO WE R STE E RING (P S ) SO LE NO IDVALVE CONNECTOR
19. DISCONNECT WIRE CLAMP (FOR GENERATOR) FROM VSV (FOR EVAP)
(a) Remove the 2 bolts, and disconnect the VSV from the RH
cylinder head.
(b) Disconnect the wire clamp from the VSV bracket.
20. 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.
21. DISCONNECT POWER STEERING (PS) TUBES FROM SUSPENSION CROSSMEMBER
Remove the clamp bolt, and disconnect the PS tubes.
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20. INSTALL POWER STEERING (PS) SOLENOID VALVECONNECTOR
21. CONNECT ENGINE WIRE CONNECTORS
22. CONNECT THEFT DETERRENT HORN CONNECTOR
23. INSTALL GROUND CABLE TO BODY
24. CONNECT IGNITER CONNECTORS
(a) Connect the 2 igniter connectors HINT: Connect the yellow taped connector to the igniter on
the rear side.
(b) Install the wire clamp.
25. INSTALL RADIATOR ASSEMBLY
(a) Install the 2 lower radiator supports to the radiator.
(b) Place the radiator assembly on the body bracket.
(c) Slightly lift the radiator, and connect the 2 oil cooler hoses (for
cooling fan) to the hose clamp on the radiator fan shroud.
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15. DISCONNECT ENGINE WIRE CONNECTORS
16. DISCONNECT THEFT DETERRENT HORN CONNECTOR
17. DISCONNECT GROUND CABLE FROM BODY
18. DISCONNECT PS SOLENOID VALVE CONNECTOR
19. DISCONNECT WIRE CLAMP (FOR ALTERNATOR) FROMVSV (FOR EVAP SYSTEM)
(a) Remove the two bolts, and disconnect the VSV from the
RH cylinder head.
(b) Disconnect the wire clamp from the VSV bracket.
20. REMOVE ALTERNATOR (a) Disconnect the alternator connector.
(b) Remove the cap and nut, and disconnect the alternatorwire.
(c) Remove the mounting bolt and nut.
(d) Disconnect the A/T oil cooler pipe bracket.
(e) Remove the alternator.
21. D I S C O N N E C T P S T U B E S F R O M S U SPENSION
CROSSMEMBER
Remove the clamp bolt, and disconnect the PS tubes.
EM±122
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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
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21. REMOVE THEFT DETERRENT HORN(a) Disconnect the connector.
(b) Remove the bolt and theft deterrent horn.
HINT: Remove the deterrent horn when the valve clearance
is adjusted for the front portion of the exhaust camshaft on
the LH cylinder head.
22. ADJUST VALVE CLEARANCE (a) Remove the adjusting shim.w Turn the crankshaft, and position the cam lobe of
the camshaft on the adjusting valve upward.
w Position the hole of the adjusting shim toward the
spark plug side.
w Press down the valve lifter with SST (A), and place
SST (B) between the camshaft and valve lifter
flange. Remove SST (A).
SST 09248±55011 (09248±05011 (A), 09248±05021 (B))
NOTICE: The valve lifter is made of aluminum, which is
easily scratched. So when setting SST (B), take care not
to scratch the face of the valve lifter.
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ENGINE MECHANICAL Engine Tune±UpEM±17
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23. REINSTALL THEFT DETERRENT HORN(a) Install the theft deterrent horn with the bolt.
(b) Connect the connector.
24. REINSTALL RH CYLINDER HEAD COVER (a) Remove any oil packing (FIPG) material.
(b) Apply seal packing to the cylinder head as shown in theillustration.
Seal packing: Part No. 08826±00080 or equivalent
(c) Install the gasket to the cylinder head cover.
(d) Install the seal washer to the mounting bolt.
(e) Install the cylinder head cover with the eight bolts.
Torque: 5.9 N Vm (60 kgf Vcm, 52 in. Vlbf)
(g) Connect the four high±tension cords to the spark plugs.
(h) Install the rear and front high±tension cord clamps with
the two bolts.
HINT: Place the front and rear ends of the front high±tension
cord clamp on the rear high±tension cord clamp and lower
high±tension cord cover.
(i) Fit the high±tension cords to the high±tension cord clamps. (See page IG±16)
25. REINSTALL LH CYLINDER HEAD COVER (a) Remove any oil packing (FIPG) material.
(b) Apply seal packing to the cylinder head as shown in theillustration.
Seal packing: Part No. 08826±00080 or equivalent
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(c) Disconnect the following connectors:(1) Two connectors from engine room main wire
(2) Igniter connector
(3) Theft deterrent horn connector
(d) Disconnect the wire harness from the two wire clamps.
(e) Using a 6 mm hexagon wrench, remove the bolt and connector bracket.
(f) Disc onnect the wire clamp and PS solenoid valve
connector.
(g) Disconnect the ground strap from the cylinder block.
(h) Disconnect the PS pressure switch connector.
(i) Disconnect the following connectors: (1) Ignition coil connector
(2) Noise filter connector
(j) Remove the cap and nut, and disconnect the generator wire.
(k) Disconnect the wire harness from the two wire clamps.
(l) Disconnect the following hoses: (1) Vacuum hose (from VSV for heater vale) from check valve.
(2) Heater water hose from heater water valve.
(3) Heater water hose from water by±pass pipe
(m) Disconnect the VSV connector.
(n) Disconnect the ground strap from the bracket on the body.
(o) Remove the bolt holding the engine wire protector from
the body.
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(c) Install the bolt holding the engine wire protector on thebody.
(d) Install the ground strap to the bracket on the body.
(e) Connect the VSV connector.
(f) Connect the following hose: (1) Heater water hose to water by±pass pipe
(2) Heater water hose to heater water valve
(3) Vacuum hose (from VSV for heater water valve) to
check valve.
(g) Install the generator wire with the nut and cap.
(h) Connect the following connector: (1) Ignition coil connector
(2) Noise filter connector
(i) Install the wire harness with the two wire clamps.
(j) Connect the PS pressure switch connector.
(k) Install the ground strap on the cylinder block.
(l) Connect the PS solenoid valve connector and wire
clamp.
(m) Using a 6 mm hexagon wrench, install the connector bracket with the bolt.
(n) Connect the following connectors: (1) Two connectors to engine room main wire
(2) Igniter connector
(3) Theft deterrent horn connector
(o) Install the wire harness with the two wire clamps.
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ENGINE MECHANICAL Cylinder BlockEM±109
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