2003 LEXUS LS430 Identifying ac

Fig. 48: Identifying Knock Sensor Connectors
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
64.REMOVE ENGINE HANGER NO.1
65.REMOVE ENGINE HANGER NO.2
66.REMOVE IGNITION COIL ASSY
67.REMOVE OIL FILTER BRACKET SUB-ASSY
a. Disconnect the oil pressure switch connector.
b. Remove the stud bolt, 2 nuts and oil filter bracket with gasket.
68.REMOVE CRANKSHAFT POSITION SENSOR
69.REMOVE ENGINE OIL LEVEL SENSOR
70.REMOVE EXHAUST MANIFOLD HEAT INSULATOR NO.1
71.REMOVE EXHAUST MANIFOLD SUB-ASSY RH
a. Remove the 8 nuts, exhaust manifold and
gasket.

Fig. 49: Identifying Exhaust Manifold Sub-Assy RH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
72.INSPECT EXHAUST MANIFOLD SUB-ASSY RH
a. Using a precision straight edge and feeler gauge, measure the surface contacting the cylinder head
for warpage.
Maximum warpage: 0.50 mm (0.0197 in.)
If the warpa
ge is greater than the maximum, replace the manifold.

Fig. 55: Identifying White Mark
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Install the exhaust manifold with 8 new nuts. Uniformly tighten the nuts in several passes.
Torque: 44 N.m (449 kgf.cm, 32 ft.lbf)

Fig. 57: Identifying White Mark
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Install the exhaust manifold with 8 new nuts. Uniformly tighten the nuts in several passes.
Torque: 44 N.m (449 kgf.cm, 32 ft.lbf)

Fig. 59: Identifying Knock Sensor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
93.INSTALL VVT SENSOR
94.INSTALL CAMSHAFT POSITION SENSOR
Torque: 7.5 N.m (77 kgf.cm, 66 in.lbf)
95.INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSY (See REPLACEMENT
- RH
and REPLACEMENT
- LH )
96.INSTALL OIL LEVEL GAGE GUIDE
Torque: 7.5 N.m (77 kgf.cm, 66 in.lbf)
97.INSTALL WATER BYPASS PIPE SUB-ASSY
a. Install a new O-rin
g to the water bypass pipe.

Fig. 62: Identifying Seal Packing
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
101.INSTALL GENERATOR ASSY (See REPLACEMENT
)
102.INSTALL STARTER ASSY (See REPLACEMENT
)
103.INSTALL INTAKE MANIFOLD ASSY
a. Place 2 new gaskets on the cylinder heads with the white mark facing outward.

n. Connect the VSV connector for EVAP.
Fig. 67: Identifying VSV Connector For EVAP

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
104.INSTALL THROTTLE BODY ASSY (See REPLACEMENT
)
105.REMOVE ENGINE STAND
106.INSTALL DRIVE PLATE & RING GEAR SUB-ASSY
HINT:
The mounting bolts are tightened in 2 progressive steps (step (c) and (e)).
If any one of the mounting bolts is broken or deformed, replace it.
a. Apply adhesive to 2 or 3 threads of the mounting bolt end.
Adhesive:
Part No. 08833-00070, THREE BOND 1324 or equivalent

Fig. 69: Identifying Drive Plate Bolts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
d. Mark the mounting bolt with paint.
e. Retighten the mounting bolt by 90° in the numerical order shown.
f. Check that the painted mark is now at a 90° an
gle to step (e).