Inspect Camshafts And Bearings - Toyota 22R-E Service Manual

EG2–70
ENGINE – ENGINE MECHANICAL

10. INSPECT CAMSHAFTS AND BEARINGS

A. Inspect camshaft for runout
(a) Place the camshaft on V – blocks.
(b) 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 camshaft.
B. Inspect cam lobes
Using a micrometer, measure the cam lobe height.
Standard cam lobe height:
47.830 – 47.930 mm (1.8830 – 1.8870 in.)
Minimum cam lobe height:
47.50 mm (1.8701 in.)
If the cam lobe height is less than minimum, replace
the camshaft.
C. Inspect camshaft journals
Using a micrometer, measure the journal diameter.
Journal diameter:
33.959 – 33.975 mm (1.3370 – 1.3376 in.)
If the journal diameter is not as specified, check the oil
clearance.
D. Inspect camshaft bearings
Check that bearings for flaking and scoring.
If the bearings are damaged, replace the bearing caps
and cylinder head as a set.
E. Inspect camshaft journal oil clearance
(a) Clean the bearing caps and camshaft journals.
(b) Place the camshafts on the cylinder head.
(c) Lay a strip of Plastigage across each of the camshaft
journals.