2003 LEXUS LS430 cylinder head

Fig. 106: Identifying Cylinder Head Bolt Into Portion A
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Lift the cylinder head from the dowels on the cylinder block, and place the cylinder head on
wooden blocks on a bench.
HINT:
If the cylinder head cannot be removed, pry between the cylinder head and cylinder block with a
screwdriver.

Fig. 107: Lifting Cylinder Head From Dowels
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
32.REMOVE CYLINDER HEAD LH
a. Uniformly loosen the 10 cylinder head bolts on one side of each cylinder head in several passes in
the sequence shown in the illustration.

Fig. 108: Identifying Cylinder Head LH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 109: Identifying Cylinder Head Bolt Into Portion A
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Lift the cylinder head from the dowels on the cylinder block, and place the cylinder head on
wooden blocks on a bench.
HINT:
If the cylinder head cannot be removed, pry between the cylinder head and cylinder block with a
screwdriver.

Fig. 110: Lifting Cylinder Head From Dowels
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
33.REMOVE WATER PUMP ASSY
a. Remove the 5 bolts, 2 stud bolts and nut, water pump and gasket.
34.REMOVE OIL PAN SUB-ASSY NO.2 (See REPLACEMENT
)
35.REMOVE OIL PAN BAFFLE PLATE
a. Remove the 3 bolts, 2 nuts and baffle plate.
36.REMOVE OIL PAN SUB-ASSY (See REPLACEMENT
)
37.REMOVE OIL STRAINER SUB-ASSY
a. Remove the bolt, 2 nuts, oil strainer and gasket.
38.REMOVE OIL PUMP ASSY (See REPLACEMENT
)
39.REMOVE ENGINE REAR OIL SEAL RETAINER
a. Remove the 7 bolts.
b. Using a screwdriver, remove the oil seal retainer by prying the portions between the oil seal
retainer and crankshaft bearing cap.
c. Remove the O-ring.

Fig. 111: Removing Engine Rear Oil Seal Retainer Using Screwdriver
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
40.REMOVE SPARK PLUG TUBE GASKET
a. Bend the 4 ventilation case claws installed on the cylinder head cover to an angle of 90° or more.
b. Using a screwdriver, pry out the gasket.
HINT:
Tape the screwdriver tip before use.

Fig. 112: Prying Out Gasket Using Screwdriver
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
41.INSTALL SPARK PLUG TUBE GASKET
a. Using SST and a hammer, tap in a new gasket until its surface is flush with the upper edge of the
cylinder head cover.
SST 09950-60010, 09950-70010 (09951-00240, 09951-00440, 09951-07100, 09952-06010)
b. Apply a light coat of MP grease to the gasket lip.
c. Return the 4 ventilation case claws to its ori
ginal position.

Fig. 136: Identifying Water Pump Assy Bolts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
60.INSTALL CYLINDER HEAD SUB-ASSY
a. Place a new cylinder head gasket on the cylinder block.
HINT:
The rear side of the cylinder head gasket has marks so that the RH and LH banks can be
distinguished. A "3R" mark is on the RH bank's gasket.
b. Place the cylinder head on the cylinder head gasket.