I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I II II I I I I I II II II II II I I I I I I I I I
ENGINE ASSEMBLY II
A27
Ammoniun cuprous
Test liquid shou
chloride
not be applied t
area around oil
Face in contact
Id
0
Crankshaft Pin Bearing Clearance
3 .
2
.
3
.
4
.
lal
5
.
6
.
7
.
Clean the crankshaft,
the connecting
rod, the bear-
ing cap, and the bearings.
Install
the
bearing to the connecting
rod.
Do
not allow
the crankshaft to move when installing
the bearing cap.
Hold the connecting
rod
(with
the bearing
installed)
against the crankshaft
pin.
Attach the plastigage to the crankshaft pin.
Apply engine oil to the plastigage to keep it from
falling.
Install
the
connecting rod bearing cap and tighten it
to the specified torque.
Do not allow the connecting rod to move when
installing
and
tightening the bearing cap.
Remove the bearing cap.
Compare the width of the plastigage attached to
either the crankshaft or the bearing against the scale
printed on the plastigage container.
If the measured value exceeds the limit, perform the
following additional steps.
1) Use a micrometer to measure the crankshaft
outside diameter.
2) Use an inside dial indicator to measure the bear-
ing inside diameter.
3) Replace the crankshaft and/or the bearing if the
measured value(s) exceed the limit.
Crankshaft T&biding Inspection
Inspection
Model
4BG1, QBGlT, 6BGl
and
6BGlT
1.
Use an organic cleaner to thoroughly clean the
crankshaft. There must be no traces of oil on the
surfaces to be inspected.
. .
2. Prepare a 10% solution of ammonium cuprous chlo-
ride (dissolved in distilled water).
3. Use
a
spot glass rod to apply the solution to
the sur-
face
to be inspected.
Hold the surface to be inspected perfectly horizontal
to prevent the solution from running.
Note:
Do not allow
the
solution
to come in contact with the oil
ci
ports and
their surrounding area.
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