2003 LEXUS LS430 Factory Repair Manual

Page 3569 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 285: Installing Upper And Lower Intake Manifolds Assembly 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
b. Install the upper and lower intake manifolds assembly with the 6 bolts and 4 nuts. 
Tor

Page 3570 of 4500

LEXUS LS430 2003  Factory Repair Manual REPLACEMENT 
1.WORK FOR PREVENTING GASOLINE FROM SPILLING OUT (See PRECAUTION
 )  
2.REMOVE NO.3 CAMSHAFT SUB-ASSY (See REPLACEMENT
 )  
3.REMOVE THROTTLE BODY ASSY (See REPLACEMENT
 )  
4.REMOVE V-BA

Page 3571 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 286: Removing Upper And Lower Intake Manifold Assembly
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
10.REMOVE INTAKE MANIFOLD ASSY 
a. Remove the 6 bolts, 4 nuts, upper and lower intake manifold

Page 3572 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 288: Removing Water By-Pass Joint FR 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
14.REMOVE W/CATALYST CONVERTER ASSY

Page 3573 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 289: Removing Cylinder Head LH 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
15.REMOVE CYLINDER HEAD LH 
a. Disconnect the wire clamp from the wire bracket on the cylinder head cover.  
b. Remov

Page 3574 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 290: Identifying Cylinder Head Bolts 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
d. Uniformly loosen and remove the 10 cylinder head bolts and plate washers in the sequence shown 
in the illus

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LEXUS LS430 2003  Factory Repair Manual Fig. 291: Removing Cylinder Head Gasket No.2 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
17.INSTALL CYLINDER HEAD GASKET NO.2 
a. Place a new cylinder head gasket in position on the cylinder block.

Page 3576 of 4500

LEXUS LS430 2003  Factory Repair Manual Fig. 292: Identifying Cylinder Head LH 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.