Toyota 4A-FE Repair Manual page 60

EM-76 ENGINE MECHANICAL - Cylinder Head (4A-FE)
(f)
Measure the Plastigage at its widest point.
Standard oil clearance: 0 .035 - 0.072 mm
(0.0014 - 0.0028 in.)
Maximum oil clearance: 0.1 0 mm 10.0039 in.)
If the oil clearance is greater than maximum, replace the
camshaft. If necessary, replace the bearing caps and
cylinder head as a set.
(g)
Completely remove the Plastigage .
G. Inspect camshaft thrust clearance
(a)
Install the camshaft.
(See step 3 on pages EM-81 to 83)
(b)
Using a dial indicator, measure the thrust clearance
while moving the camshaft back and forth.
Standard thrust clearance:
Intake 0.030 - 0.085 mm
(0.001
2 -
0.0033 in.)
Exhaust 0 .035 - 0.090 mm
EM4166
(0.0014 - 0.0035 in.)
L__~~~---~~~---~~~~--~---'
EM4203
Maximum thrust clearance: 0.11 mm (0.0043 in.)
If the thrust clearance is greater than maximum, replace
the camshaft. If necessary, replace the bearing caps and
cylinder head as a set.
H. Inspect camshaft gear backlash
(a) Install the camshafts without installing the exhaust
camshaft sub-gear.
(See step 3 on page EM-81 to 83)
(b) Using a dial indicator, measure the backlash.
Standard back lash: 0.020 - 0.020 mm
(0.0008 - 0.0079 in.)
Maximum
back
lash: 0.30 mm (0.0188 in.)
If the backlash is greater than maximum, replace the
camshafts.
11. INSPECT VALVE LIFTERS AND LIFTER BORES
(a) Using a caliper gauge, measure the lifter bore
diameter of the cylinder head .
Lifter bore diameter: 28.005 - 28.006 mm
(1.1026 - 1.1034 in.)