2003 LEXUS LS430 Identifying ac

Fig. 436: Identifying Cylinder Bore Diameter
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
1. Using a cylinder gauge, measure the cylinder bore diameter at positions A and B in the thrust
and axial directions.
STANDARD DIAMETER:
CYLINDER BORE DIAMETER
Maximum diameter: 91.149 mm (3.5885 in.)
If the avera
ge of the diameter is greater than the maximum, replace the cylinder block.
Mark 191.000 to 91.008 mm (3.5827 to 3.5830 in.)
Mark 291.008 to 91.021 mm (3.5830 to 3.5835 in.)
Mark 391.021 to 91.029 mm (3.5835 to 3.5838 in.)

Fig. 443: Identifying Cylinder Block Diameter
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c. Inspect the piston pin fit.

Fig. 456: Measuring Diameter Of Each Main Journal And Crank Pin Using Micrometer
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17.INSTALL STUD BOLT
Fig. 457: Identifying Stud Bolt Dimension

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18.INSTALL STRAIGHT PIN
Fig. 458: Identifying Straight Pin Dimension

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19.INSTALL RING PIN

Fig. 459: Identifying Ring Pin Dimension
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20.INSTALL CONNECTING ROD SMALL END BUSH
a. Align the oil holes of a new bush and the connecting rod.

Fig. 470: Identifying Piston Rings Position

Fig. 472: Identifying Upper Bearings And Lower Bearings Oil Groove
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a. Align the bearing claw with the claw groove of the cylinder block, and push in the 5 upper
bearings.

Fig. 474: Identifying Bearing Cap Installation Position
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24.INSTALL CRANKSHAFT THRUST WASHER SET
a. Install the 2 thrust washers under the No. 3 journal position of the cylinder block with the oil
grooves facing outward.

Fig. 476: Identifying No. 3 Bearing Cap With The Grooves
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25.INSTALL CRANKSHAFT
a. Place the crankshaft on the cylinder block.
b. Install the 5 crankshaft bearing caps in their proper locations.