Toyota 4A-FE Repair Manual page 55

I
ENGINE MECHANICAL - Cylinder Head (4A-FE) EM-71
Both intake and exhaust
Bushing bore diameter mm (in.I Bushing size
--
11 000 - 1 1-02 7
Used STD
(0.4331 - 0 .4341}
11 .050 - 11.077
Used O/ S 0.06
(0.4350 - 0.4361}
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EM4193 EM7S05
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EM4194 EM7808
(c) Using a caliper gauge, measure the bushing bore
diameter of the cylinder head.
Standard valve guide bore (cold):
11.000 - 11.027 mm (0.4331 - 0.4341 in.)
(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 in.L machine the bushing bore
to the following dimensions:
Rebored cylinder head bushing bore dimesion
11.050 - 11 .077 mm (0.4350 - 0.4361 in.)
If the bushing bore diameter of the cylinder head is greater
than 11 .077 mm (0.4361 in.), replace the cylinder head.
(e) Gradually heat the cylinder head to 80 - 100°C (176
- 212°F)
(f) Using SST and
a
hammer,
tap
in
a
new guide bushing
to where 12. 7 - 13.1 mm (0 .500 - 0.516 in.)
protruding from the cylinder head .
SST 09201-70010
(g)
Using a sharp 6 mm reamer, ream the guide bushing
to obtain the standard specified clearance (See page
EM- 70) between the guide bushing and valve stem.