Toyota 4-Runner 1985 Repair Manual page 52

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ENGINE MECHANICAL - Cylinder Head
EM-23
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M2503
Z5026
14. INSPECT CAMSHAFT AND BEARING CAPS
(a) Using a micrometer, measure the cam lobes.
If the lobe height is less than the minimum allowable, the
camshaft is worn and must be replaced.
Minimum intake lobe height: 42.63 - 42.72 mm
(1.6783 - 1.6819 in.)
Minimum exhaust lobe height: 42.69 - 42.78 mm
(1.6807 - 1.6842 in.)
(b) Place the camshaft on V -blocks and measure the
runout at the center journal.
If the runout is greater than the maximum allowable, replace
the camshaft.
Maximum circle runout: 0.2 mm (0.008 in.)
(c) Using a micrometer, measure the journal diameter.
Standard diameter: 32.98 - 33.00 mm
(1.2984 - 1.2992 in.)
(d) Measure the camshaft journal oil clearance.
• Clean the bearing caps and camshaft journal.
• Lay a strip of Plastigage across each journal.
• Install the correct numbered bearing cap on each
journal with the arrows pointing toward the front.
Torque each bolt.
Torque: 200 kg-cm (14 ft-Ib, 20 N·m)
NOTE: Do not turn the camshaft while the Plastigage is
in place.