Toyota RM787U, Руководство по обслуживанию и ремонту

Страница: 986 / 1976

A05704
EM2011
EM2538
P12401
A05239
Plastigage
EM-48
- ENGINE MECHANICAL CYLINDER HEAD
991
Author: Date:
2001 SIENNA (RM787U)
13. 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 cam-
shaft.
14. INSPECT CAM LOBES
Using a micrometer, measure the cam lobe height.
Standard cam lobe height:
Intake: 42.932 - 43.032 mm (1.6902 - 1.6942 in.)
Exhaust: 42.764 - 42.864 mm (1.6836 - 1.6876 in.)
Minimum cam lobe height:
Intake: 42.78 mm (1.6842 in.)
Exhaust: 42.61 mm (1.6776 in.)
If the cam lobe height is less than minimum, replace the cam-
shaft.
15.
INSPECT CAMSHAFT 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.
16. INSPECT 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.
17. 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 jour-
nal.