Disassembly [10/2018 - ]: Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus UX 250h, 2023 Lexus UX 250h, 2022 Lexus UX 250h, 2021 Lexus UX 250h, and 2020 Lexus UX 250h. However, it is still accessible from the selected car via links, so may be relevant.
- REMOVE INTAKE VALVE
- Using SST, compress each compression spring and remove the 8 valve spring retainer locks.
- SST: 09202-70020
- 09202-01010
- 09202-01020
- SST: 09202-00021
HINT:
Arrange the removed parts in such a way that they can be reinstalled to their original locations.
- SST: 09202-70020
- Remove the 8 valve spring retainers, 8 compression springs and 8 intake valves from the cylinder head sub-assembly.
HINT:
Arrange the removed parts in such a way that they can be reinstalled to their original locations.
- Using SST, compress each compression spring and remove the 8 valve spring retainer locks.
- REMOVE EXHAUST VALVE
- Using SST, compress each compression spring and remove the 8 valve spring retainer locks.
- SST: 09202-70020
- 09202-01010
- 09202-01020
- SST: 09202-00021
HINT:
Arrange the removed parts in such a way that they can be reinstalled to their original locations.
- SST: 09202-70020
- Remove the 8 valve spring retainers, 8 compression springs and 8 exhaust valves from the cylinder head sub-assembly.
HINT:
Arrange the removed parts in such a way that they can be reinstalled to their original locations.
- Using SST, compress each compression spring and remove the 8 valve spring retainer locks.
- REMOVE VALVE STEM OIL SEAL
- REMOVE VALVE SPRING SEAT
- REMOVE NO. 1 STRAIGHT SCREW PLUG NOTE:
If coolant leaks from a No. 1 straight screw plug or a plug is corroded, replace it.
- Using a 6 mm straight hexagon wrench, remove the 4 No. 1 straight screw plugs from the cylinder head sub-assembly.
- REMOVE STUD BOLT NOTE:
If a stud bolt is deformed or its threads are damaged, replace it.