4 Runner 2WD L4-2693cc 2.7L DOHC MFI (1997)
Valve Guide Seal: Service and Repair
1. If necessary, replace valve guide bushings.
(a)
Gradually heat the cylinder head to 80° - 100° C (176° - 212° F).
(b) Using Special Service Tool (SST) Valve Guide Bushing Remover & Replacer Set # 09201-10000 (Valve Guide Bushing Remover &
Replacer 6 # 09201- 01060), Handle Set # 09950-70010 (Handle 100 # 09951-07100) or equivalents and a hammer, tap out the guide
bushing.
(c)
Using a caliper gauge, measure the bushing bore diameter of the cylinder head.
(d) Select a new guide bushing (STD size or O/S 0.05).
If the bushing bore diameter of the cylinder head is greater than 11.027 mm (0.4341 inch), machine the bushing bore to the following
dimension: 11.050 - 11.077 mm (0.4350 - 0.4361 inch).
If the bushing bore diameter of the cylinder head is greater than 11.077 mm (0.4361 inch), replace the cylinder head.
(e)
Gradually heat the cylinder head to 80° - 100° C (176° - 212° F).
(f)
Using SST Valve Guide Bushing Remover & Replacer Set # 09201-10000 (Valve Guide Bushing Remover & Replacer 6 # 09201- 01060),
Handle Set # 09950-70010 (Handle 150 # 09951-07150) or equivalents and a hammer, tap in a new guide bushing to where there is 8.2 - 8.6
mm (0.323 - 0.339 inch) protruding from the cylinder head.
