Toyota 3VZ–FE Troubleshooting Manual page 63

ENGINE TROUBLESHOOTING
(b) Using a micrometer, measure the diameter of the valve stem.
Valve stem diameter:
Intake
Exhaust
(c) Subtract the valve stem diameter measurement from the
guide bushing inside diameter measurement.
Standard oil clearance:
Intake
Exhaust
Maximum oil clearance:
Intake
Exhaust
If the clearance is greater than maximum, replace the valve
and guide bushing.
10. IF NECESSARY, REPLACE VALVE GUIDE BUSHINGS
(a) Insert an oil valve wrapped with tape into the valve guide
bushing, and break off the valve guide bushing by hitting it
with a hammer. Remove the snap ring.
HINT: Wrap the tape approx. 8 mm (0.31 in.) from the valve
stem end.
NOTICE: Be careful not to damage the valve lifter hole.
(b) Gradually heat the cylinder head to 80–100
C (176–212
F).
– ENGINE MECHANICAL
5.970–5.985 mm (0.2350–0.2356 in.)
5.965–5.980 mm (0.2348–0.2354 in.)
0.025–0.060 mm (0.0010–0.0024 in.)
0.030–0.065 mm (0.0012–0.0026 in.)
0.08 mm (0.0031 in.)
0.10 mm (0.0039 in.)
EG–63