LEXUS LS430 2003 Factory Repair Manual

Fig. 452: Pressing Out Bush Using SST
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
14.INSPECT CONNECTING ROD BOLT
a. Using a vernier caliper, measure the tension portion of the connecting rod bolt.
Standard diameter:
7.200 to 7.300 mm (0.2835 to 0.2874 in.)
Minimum diameter: 7.00 mm (0.2756 in.)
If the diameter is less than the minimum, replace the bolt.

Fig. 453: Measuring Tension Portion Of Connecting Rod Bolt Using Vernier Caliper
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
15.INSPECT CRANKSHAFT BEARING CAP BOLT
a. Using a vernier caliper, measure the tension portion diameter of the main bearing cap bolt.
Standard diameter:
7.500 to 7.600 mm (0.2953 to 0.2992 in.)
Minimum diameter: 7.20 mm (0.2835 in.)
If the diameter is less than the minimum, replace the cap bolt.

Fig. 454: Measuring Tension Portion Diameter Of Main Bearing Cap Bolt Using Vernier Caliper
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
16.INSPECT CRANKSHAFT
a. Inspect for circle runout.
1. Place the crankshaft on V-blocks.
2. Using a dial indicator, measure the circle runout at the center journal.
Maximum circle runout: 0.08 mm (0.0031 in.)
If the circle runout is
greater than the maximum, replace the crankshaft.

Fig. 455: Measuring Circle Runout At Center Journal Using Dial Indicator
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Inspect the main journals and crank pins.
1. Using a micrometer, measure the diameter of each main journal and crank pin.
Main journal diameter:
66.988 to 67.000 mm (2.6373 to 2.6378 in.)
Crank pin diameter:
51.982 to 52.000 mm (2.0465 to 2.0472 in.)
If the diameter is not as specified, check the oil clearance (see steps 3 and 7). If necessary, replace
the crankshaft.
2. Check each main journal and crank pin for taper and out-of-round as shown in the illustration.
Maximum taper and out-of-round:
0.02 mm (0.0008 in.)

If the taper and out-of-round is greater than the maximum, replace the crankshaft.

Fig. 456: Measuring Diameter Of Each Main Journal And Crank Pin Using Micrometer
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
17.INSTALL STUD BOLT
Fig. 457: Identifying Stud Bolt Dimension

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
18.INSTALL STRAIGHT PIN
Fig. 458: Identifying Straight Pin Dimension

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
19.INSTALL RING PIN

Fig. 459: Identifying Ring Pin Dimension
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
20.INSTALL CONNECTING ROD SMALL END BUSH
a. Align the oil holes of a new bush and the connecting rod.

Fig. 460: Aligning Oil Holes Of Bush And Connecting Rod
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Using SST and a press, press in the bush.
SST 09222-30010

Fig. 461: Pressing Bush Using SST
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
c. Using a pin hole grinder, hone the bush to obtain the standard specified clearance (see step 13)
between the bush and piston pin.

Fig. 462: Using Pin Hole Grinder
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
d. Check the piston pin fits at normal room temperature.
1. Coat the piston pin with en
gine oil, and push it into the connecting rod with your thumb.