Toyota T100 1996 Service Manual page 764

Both intake and exhaust
Bushing bore diameter
mm (in.)
11.000 − 11.027
(0.4331 − 0.4341)
11.050 − 11.077
(0.4350 − 0.4361)
Z11079
Z10934
Margin Thickness
1996 TOYOTA T100 (RM449U)
ENGINE MECHANICAL (3RZ−FE)
(d)
If the bushing bore diameter of the cylinder head is greater than
11.027 mm (0.4341 in.), machine the bushing bore to these di-
Bushing size
mension:
Use STD
If the bushing bore diameter of the cylinder head is greater than
11.077 mm (0.4361 in.), replace the cylinder head.
Use O/S 0.05
(e)
(f)
A03794
(g)
A03795
11.
(a)
(b)
44.5°
Z00054
(c)
If the margin thickness is less than minimum, replace the valve.
EM0181
− CYLINDER HEAD
Select a new guide bushing (STD size or O/S 0.05).
11.050 − 11.077 mm (0.4350 − 0.4361 in.)
Gradually heat the cylinder head to 80 − 100°C (176 −
212°F).
Using SST and a hammer, tap in a new guide bushing to
where there 8.2 − 8.6 mm (0.323 − 0.339 in.) protruding
from the cylinder head.
SST 09201−10000 (09201−01060),
09550−10012 (09252−10010)
Using a sharp 6 mm reamer, ream the guide bushing to
obtain the standard specified clearance (See step 9
above) between the guide bushing and valve stem.
INSPECT AND GRIND VALVES
Grind the valve enough to remove pits and carbon.
Check that the valve is ground to the correct valve face
angle.
Valve face angle:
44.5°
Check the valve head margin thickness.
Standard margin thickness:
1.0 mm (0.039 in.)
Minimum margin thickness:
0.5 mm (0.020 in.)
EM−41