EM0281
P03976
P03977
−
ENGINE MECHANICAL
CYLINDER HEAD
EM
−
45
1996 LAND CRUISER (RM451U)
(c)
Using a spring tester, measure the tension of the valve
spring at the specified installed length.
Installed tension:
214
−
238 N (21.8
−
24.2 kgf, 48.1
−
53.4 lbf)
at 36.5 mm (1.437 in.)
If the installed tension is not as specified, replace the valve
spring.
9.
INSPECT CAMSHAFTS
(a)
Inspect for runout.
(1)
Place the camshaft on V
−
blocks.
(2)
Using a dial indicator, measure the circle runout at
the center journal.
Maximum circle runout: 0.06 mm (0.0024 in.)
If the circle runout is greater than maximum, replace the cam-
shaft.
(b)
Inspect the cam lobes.
Using a micrometer, measure the cam lobe height.
Standard cam lobe height:
50.61
−
50.71 mm (1.9925
−
1.9965 in.)
Minimum cam lobe height: 50.51 mm (1.9886 in.)
If the cam lobe height is less than minimum, replace the cam-
shaft.
(c)
Inspect the journals.
Using a micrometer, measure the journal diameter.
Journal diameter:
26.959
−
26.975 mm (1.0614
−
1.0620 in.)
If the journal diameter is not as specified, check the oil clear-
ance.
(d)
Inspect the camshaft bearings.
Check that bearings for flaking and scoring.
If the bearings are damaged, replace the bearing caps and cyl-
inder head as a set.
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Version 1.00 - 12/21/2010