2003 LEXUS LS430 check oil

1.REMOVE TIMING BELT (See REPLACEMENT )
2.REMOVE CRANKSHAFT TIMING PULLEY
a. Using SST, remove the timing pulley.
Fig. 301: Removing Timing Pulley Using SST

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
SST 09950-50013 (09951-05010, 09952-05010, 09953-05010, 09953-05020, 09954-05021)
3.REMOVE OIL PUMP SEAL
a. Using a knife, cut the oil seal lip.
b. Using a screwdriver with its tip taped, pry out the oil seal.
c. After the removal, check if the crankshaft is not damaged.

Fig. 305: Removing Drive Plate And Ring Gear And The Front Spacer
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Remove the 8 mounting bolts, the rear spacer, the drive plate and ring gear and the front spacer.
3.REMOVE ENGINE REAR OIL SEAL
a. Using a knife, cut the oil seal lip.
b. Using a screwdriver with its tip taped, pry out the oil seal.
c. After the removal, check if the crankshaft is not damaged.

Bush)
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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 mm (0.2169 to 0.2177 in.)
If the journal diameter is not as specified, check the oil clearance.
b. Subtract the valve stem diameter measurement (see step 6) from the guide bush inside diameter
measurement.
Standard oil clearance:
0.025 to 0.060 mm (0.0010 to 0.0024 in.)
Maximum oil clearance: 0.08 mm (0.0031 in.)
If the clearance is greater than the maximum, replace the valve and guide bush (see steps 11 and 12).

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 gauge, measure the inside diameter of the guide bush.
Bush inside diameter:
5.510 to 5.530 mm (0.2169 to 0.2177 in.)
If the journal diameter is not as specified, check the oil clearance.
b. Subtract the valve stem diameter measurement (see step 7) from the guide bush inside diameter
measurement.

Fig. 360: Cleaning Valve And Valve Seat
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
17.INSPECT VALVE LIFTER
a. Using a micrometer, measure the lifter diameter at the 12.5 +/- 2.0 mm (0.492 +/- 0.079 in.) from
the top surface.
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If the lifter diameter is not as specified, check the oil clearance.

Fig. 361: Measuring Lifter Diameter Using Micrometer
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Using a caliper gauge, measure the lifter bore diameter of the cylinder head.
Lifter bore diameter: 31.000 to 31.016 mm (1.2205 to 1.2211 in.)
If the lifter diameter is not as specified, check the oil clearance.
c. Subtract the lifter diameter measurement from the lifter bore diameter measurement.
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Maximum oil clearance: 0.07 mm (0.0028 in.)
If the oil clearance is
greater than the maximum, replace the lifter. If necessary, replace the cylinder head.

Fig. 364: Measuring Cam Lobe Height Using Micrometer
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
c. Inspect the journal diameter of the camshaft.
1. Using a micrometer, measure the journal diameter of the camshaft for the camshaft bearing.
Journal diameter: 26.954 to 26.970 mm (1.0612 to 1.0618 in.)
If the
journal diameter is not as specified, check the oil clearance.

Fig. 365: Measuring Journal Diameter Of Camshaft Using Micrometer
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. Using a micrometer, measure the journal diameter for the camshaft timing tube.
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If the
journal diameter is not as specified, check the oil clearance.