2003 LEXUS LS430 Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Standard overall length:  
94.85 to 95.35 mm (3.7342 to 3.7539 in.)  
Minimum overall length: 94.60 mm (3.7244 in.)  
If the overall length is less than the minimum, replace the valve. 
Fig. 333: Chec

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LEXUS LS430 2003  Factory Repair Manual Fig. 334: Measuring Deviation Of Spring Using Steel Squares 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
8.INSPECT INNER COMPRESSION SPRING 
a. Using steel squares, measure the deviation of the spri

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LEXUS LS430 2003  Factory Repair Manual Fig. 335: Measuring Free Length Of Spring Using Vernier Caliper 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
b. Using a vernier caliper, measure the free length of the spring. 
Free length: 54.05 to

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LEXUS LS430 2003  Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Fig. 336: Measuring Tension Of Valve Spring Using Spring Tester 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
c. Using a spring tester, measure the tension of the valve spring at the specified instal

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LEXUS LS430 2003  Factory Repair Manual Bush) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
9.INSPECT INTAKE VALVE GUIDE BUSH 
a. Using a caliper gauge, measure the inside diameter of the guide bush. 
Bush inside diameter:  
5.510 to 5.530

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LEXUS LS430 2003  Factory Repair Manual Fig. 338: Measuring Inside Diameter Of Guide Bush Using Caliper Gauge (Exhaust Valve Guide 
Bush) 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
10.INSPECT EXHAUST VALVE GUIDE BUSH 
a. Using a caliper

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LEXUS LS430 2003  Factory Repair Manual Standard oil clearance:  
0.030 to 0.065 mm (0.0012 to 0.0026 in.)  
Maximum oil clearance: 0.10 mm (0.0039 in.)  
If the clearance is greater than the maximum, replace the valve and guide bush (see s