Replace Valve Guide Bushings - Toyota 7M-GE Repair Manual

EM-48 ENGINE MECHANICAL h Cylinder Head
Both intake and exhaust
Bushing bore mm (in.)
11.000 - 11.027
(0.433 1 - 0.4341 I
Bushing size
Use STD
Over 11.027
(0.434 1)
Use O/S 0.05
10. IF NECESSARY, REPLACE VALVE GUIDE BUSHINGS
(a) insert an old valve wrapped with tape into the valve
guide bushing and break off the.valve guide bushing
by hitting it with a hammer.
CAUTION: Be careful.not to damage the lifter hole.
(b) Gradu
.
ally heat the cylinder head to approx.
194OF).
(c) Using SST and hammer, drive out valve guide bush-
ing.
SST 09201-70010
(d) Using a caliper gauge, measure the valve guide bore
of the cylinder head.
(e) Select a new valve guide bushing.
If the valve guide bushing bore of the cylinder head is
more than 11.027 mm (0.4341 in.), machine the bore to
the following dimensions.
Rebored valve guide bushing bore dimension:
11.050 - 11.077 mm (0.4350 - 0.4381 in.1