EM2196
−
ENGINE MECHANICAL
CYLINDER HEAD
EM
−
47
1996 LAND CRUISER (RM451U)
(h)
Inspect the gear backlash.
(1)
Install the camshafts without installing the exhaust
cam sub
−
gear (See page
EM
−
54
).
(2)
Using a dial indicator, measure the backlash.
Standard backlash:
0.020
−
0.200 mm (0.0008
−
0.0079 in.)
Maximum backlash: 0.30 mm (0.0188 in.)
If the backlash is greater than maximum, replace the cam-
shafts.
10. INSPECT VALVE LIFTER OIL CLEARANCE
(a)
Using a caliper gauge, measure the lifter bore diameter
of the cylinder head.
Lifter bore diameter:
34.000
−
34.021 mm (1.3386
−
1.3394 in.)
(b)
Using a micrometer, measure the lifter diameter.
Lifter diameter:
33.966
−
33.976 mm (1.3372
−
1.3376 in.)
(c)
Subtract the lifter diameter measurement from the lifter
bore diameter measurement.
Standard oil clearance:
0.024
−
0.055 mm (0.0009
−
0.0022 in.)
Maximum oil clearance: 0.07 mm (0.0028 in.)
If the oil clearance is greater than maximum, replace the lifter.
If necessary, replace the cylinder head.
11.
INSPECT AIR INTAKE CHAMBER
Using a precision straight edge and thickness gauge, measure
the surface contacting the intake manifold for warpage.
Maximum warpage: 0.30 mm (0.0118 in.)
If warpage is greater than maximum, replace the air intake
chamber.
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Brought to you by BirfMark
Version 1.00 - 12/21/2010
