Reassembly [11/2021 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.

INSTALL NO. 2 STRAIGHT SCREW PLUG

Using a 14 mm hexagon socket wrench, install 2 new screw plug gaskets and the 2 No. 2 straight screw plugs.

Torque: 80 N.m (816 kgf/cm, 59 ft.lbf)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	for Bank 1
*b	for Bank 2

INSTALL NO. 1 STRAIGHT SCREW PLUG

Apply adhesive to the No. 1 straight screw plug.

Adhesive

Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent

NOTE:

Install the No. 1 straight screw plug within 3 minutes of applying adhesive.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	for Bank 1
*b	for Bank 2

Using a 10 mm hexagon socket wrench, install 6 new screw plug gaskets and the 6 No. 1 straight screw plugs.
Torque: 44 N.m (449 kgf/cm, 32 ft.lbf)

NOTE:
Do not add engine oil for at least 1 hour after installation.

INSTALL VALVE SPRING SEAT
1. Install the valve spring seats to the cylinder head.

INSTALL INTAKE VALVE STEM OIL SEAL

Apply a light coat of engine oil to new intake valve stem oil seals.

NOTE:

Pay attention when installing the intake valve stem oil seals.

Installing the intake valve stem oil seals to the wrong valve guide bush may cause installation problems later.

HINT:

The intake valve stem oil seals are gray and the exhaust valve stem oil seals are black.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Gray
*b	Black
*c	Intake Side
*d	Exhaust Side

Using SST, push in the intake valve stem oil seals.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Intake Valve Stem Oil Seal
*a	Correct
*b	Incorrect

SST: 09201-41020

NOTE:

Failure to use SST will cause the intake valve stem oil seal to be damaged or improperly seated.

INSTALL EXHAUST VALVE STEM OIL SEAL
HINT:

Use the same procedure as for the intake side.

INSTALL INTAKE VALVE

Sufficiently apply engine oil to the tip of the intake valve shown in the illustration.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	40 mm (1.57 in.) or more

Install the intake valve, inner compression spring and valve spring retainer to the cylinder head.
NOTE:
Install the same parts in the same combination to their original locations.

Using SST, compress the inner compression spring and install the valve spring retainer lock.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

SST: 09202-70020
1. 09202-00010
2. 09202-01010
3. 09202-01020

Using a plastic hammer, lightly tap the valve stem tip to ensure a proper fit.

NOTE:

Be careful not to damage the valve spring retainer.

INSTALL EXHAUST VALVE

Sufficiently apply engine oil to the tip of the exhaust valve shown in the illustration.

*a	40 mm (1.57 in.) or more

Install the exhaust valve, inner compression spring and valve spring retainer to the cylinder head.
NOTE:
Install the same parts in the same combination to their original locations.

Using SST, compress the inner compression spring and install the valve spring retainer lock.

SST: 09202-70020
1. 09202-00010
2. 09202-01010
3. 09202-01020

Using a plastic hammer, lightly tap the valve stem tip to ensure a proper fit.

NOTE:

Be careful not to damage the valve spring retainer.

INSTALL VALVE ADJUSTING SHIM

Apply a light coat of engine oil to the valve adjusting shims.

Install the valve adjusting shims to the cylinder head.