2003 LEXUS LS430 Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual 3. Subtract the piston diameter measurement from the cylinder bore diameter measurement.  
Standard oil clearance:  
0.060 to 0.104 mm (0.0023 to 0.0041 in.)  
Maximum oil clearance: 0.124 mm (0.0049

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LEXUS LS430 2003  Factory Repair Manual Fig. 442: Measuring Piston Diameter At Right Angles Using Micrometer 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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LEXUS LS430 2003  Factory Repair Manual HINT: 
Use a new cylinder block: 
Use a piston with the same number mark as the cylinder diameter marked on the cylinder 
block.  
The shape of the piston varies for the LH and RH banks. The LH piston

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LEXUS LS430 2003  Factory Repair Manual Fig. 443: Identifying Cylinder Block Diameter 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
c. Inspect the piston pin fit.

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LEXUS LS430 2003  Factory Repair Manual 1. At 60°C (140°F), check that the piston pin can be pushed into the piston pin hole with your 
thumb.  
Fig. 444: Checking Piston Pin
 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
d. Using a micr

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LEXUS LS430 2003  Factory Repair Manual Fig. 445: Measuring Piston Pin Diameter Using Micrometer 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
10.INSPECT PISTON RING SET 
a. Inspect the piston ring groove clearance. 
1. Using a feeler gaug

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LEXUS LS430 2003  Factory Repair Manual Fig. 446: Measuring Clearance Between Piston Ring Using Feeler Gauge 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
b. Inspect the piston ring end gap.  
1. Insert the piston ring into the cylinder bo

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LEXUS LS430 2003  Factory Repair Manual Fig. 447: Inserting Piston Ring Into Cylinder Bore 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
3. Using a feeler gauge, measure the end gap.  
STANDARD END GAP:  
END GAP SPECIFICATIONS