Toyota T100 1996 Service Manual page 766

Deviation
1996 TOYOTA T100 (RM449U)
ENGINE MECHANICAL (3RZ−FE)
60°
45°
1.0 − 1.4 mm
Z11379
(d)
(e)
P14703
13.
(a)
If the deviation is greater than maximum, replace the valve
spring.
EM0988
(b)
If the installed tension is not as specified, replace the valve
spring.
EM0281
14.
(a)
(b)
If the circle runout is greater than maximum, replace the cam-
shaft.
P14704
− CYLINDER HEAD
If the seating is too low on the valve face, use 60°
S
and 45° cutters to correct the seat.
Hand−lap the valve and valve seat with an abrasive com-
pound.
After hand−lapping, clean the valve and valve seat.
INSPECT VALVE SPRINGS
Using a steel square, measure the deviation of the valve
spring.
Maximum deviation:
2.0 mm (0.079 in.)
Using a spring tester, measure the tension of the valve
spring at the specified installed length.
Installed tension:
177 − 204 N (18.0 − 20.8 kgf, 45.9 − 39.7 lbf)
at 35.7 mm (1.406 in.)
INSPECT CAMSHAFT FOR RUNOUT
Place the camshaft on V−blocks.
Using a dial indicator, measure the circle runout at the
center journal.
Maximum circle runout:
0.06 mm (0.0024 in.)
EM−43