Crankshaft and Bearing Cleaning and Inspection
Special Tools
• |
EN-470-B
Angular Torque Wrench |
For equivalent regional tools, refer to
Special Tools .
Crankshaft End Play, Check
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Note: Crankshaft
attached with crankshaft bearing caps.
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1. |
Install the GE-571-B
gauge (1). |
|
• |
Install the holder on the
front of the engine block. |
|
• |
Place the dial gauge plunger
against the crankshaft and adjust. |
2. |
Measure the longitudinal play
of the crankshaft. |
|
• |
Move the crankshaft in the
longitudinal direction. |
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• |
Permissible crankshaft end
play 0.100-0.202 mm (0.0039-0.0080 in) .
|
3. |
Remove the GE-571-B
gauge . |
Crankshaft Out-of-Round, Check
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Note: Crankshaft
removed.
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1. |
Insert the crankshaft in the
engine block. |
2. |
Install the GE-571-B
gauge (1). |
|
• |
Attach holder to the engine
block. |
|
• |
Place the dial gauge plunger
against the crankshaft bearing journal and adjust. |
3. |
Check the rotational play of
the crankshaft. |
|
• |
Turn the crankshaft
evenly. |
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• |
Maximum permissible rotational
play 0.03 mm (0.001 in) . |
4. |
Remove the GE-571-B
gauge . |
Check Crankshaft Bearing Clearance (With Plastigage)
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Note:
• |
Do not rotate the
crankshaft. |
|
|
Lay out plastigage (flexible plastic thread) around the entire
width of the crankshaft bearing journal (1). |
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Note: The bolts can
be reused for checking the crankshaft bearing play.
|
2. |
Install the 4 lower crankshaft
bearings (3) and the lower crankshaft thrust bearing (4).
|
3. |
Install the crankshaft bearing
cap tie plate (2). |
4. |
Install the 10 inner
crankshaft bearing cap tie plate bolts (1). |
5. |
Tighten the 10 inner
crankshaft bearing cap tie plate bolts in a sequence as shown and
in the following order: |
|
5.1 |
Tighten the inner crankshaft
bearing cap tie plate bolts to 25 N·m (18 lb
ft) . |
|
5.2 |
Tighten the inner crankshaft
bearing cap tie plate bolts an additional 60°
. Use EN-470-B wrench . |
|
5.3 |
Tighten the inner crankshaft
bearing cap tie plate bolts an additional 15°
. Use EN-470-B wrench . |
6. |
Remove the crankshaft bearing
cap tie plate bolts and the crankshaft bearing cap tie
plate. |
|
Note: When reading
the value, do not confuse millimeters and inches on the measuring
scale.
|
7. |
Measure the crankshaft bearing
play. |
|
• |
Compare the width of the
flattened plastic thread (arrow) to the measuring scale (1).
|
|
• |
The crankshaft bearing play
should be 0.007-0.031 mm (0.00028-0.00122 in)
. |
Check Crankshaft Bearing Clearance (With Micrometer Gauge
Internal Measuring Device)
|
Note: The bolts can
be reused for checking the crankshaft bearing play.
|
1. |
Install and tighten the
crankshaft bearing cap tie plate and the crankshaft bearings as
shown above. |
2. |
Measure the crankshaft bearing
diameter at 3 points. |
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Measure in areas as shown (1) with an internal measuring
device. |
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Calculate the average crankshaft bearing diameter. |
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Formula: 1. result + 2. result + 3. result / 3. |
3. |
Measure the crankshaft bearing
journal diameter at 2 points between (1) and (3) and between (2)
and (4) with the micrometer gauge. |
4. |
Calculate the average
crankshaft bearing journal diameter. |
|
Formula: 1. result + 2. result / 2. |
5. |
Determine the crankshaft
bearing play. |
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Calculation formula: average crankshaft bearing diameter minus
average crankshaft bearing journal diameter. |
6. |
The crankshaft bearing play
should be 0.007-0.031 mm (0.00028-0.00122 in)
. |
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