INSPECTION
Crankshaft
-
Check the crankshaft journals and pins for damage, uneven wear and cracks. Also check oil holes for clogging. Correct or replace any defective part.
-
Inspect out-of-roundness and taper of crankshaft journal and pin.
MEASUREMENT SPECIFICATION |
Crankshaft journal O.D. |
50
mm (
1.9685
in )
|
Crankshaft pin O.D. |
45
mm (
1.7717
in )
|
Crankshaft journal, pin out-of-roundness and taper |
0.01
mm (
0.0004
in )
|
Main Bearings and Connecting Rod Bearings
Visually inspect each bearing for peeling, melt, seizure and improper contact. Replace the defective bearings.
Oil Clearance Measurement
To check the oil clearance, measure outside diameter of the crankshaft journal and the crank pin and inside diameter of the bearing. The clearance measurement is the difference between the measured outside and inside diameters.
MEASUREMENT SPECIFICATION |
Crankshaft main bearing |
0.028-0.048
mm (
0.0011-0.0018
in )
|
Connecting rod bearing. |
0.024-0.044
mm (
0.0009-0.0017
in )
|
MEASUREMENT SPECIFICATION |
Crankshaft main bearing |
0.1
mm (
0.0039
in )
|
Connecting rod bearing. |
0.1
mm (
0.0039
in )
|
Oil Clearance Measurement (Plastigauge Method)
Plastigauge may be used to measure the clearance.
-
Remove oil, grease and any other dirt from bearings and journals.
-
Cut plastigauge to the same length as the width of the bearing and place it in parallel with the journal, away from oil holes.
-
Install the crankshaft, bearings, and caps. Tighten them to the specified torques. During this operation, do not turn the crankshaft. Remove the caps. Measure the width of the plastigauge at the widest point using the scale printed on the gauge package. If the clearance exceeds the repair limit, the bearing should be replaced or an undersize bearing be used. When installing a new crankshaft, be sure to use standard size bearings. Should the standard clearance not be obtained even after bearing replacement, the journal should be ground to a recommended under size, and a bearing of the same size should be installed.
Oil Seal
Check front and rear oil seals for damage or worn lips. Replace any defective seat.
Bearing Caps
After installing the bearing caps, make sure that the crankshaft turns smoothly and the end play is correct. If the end play exceeds the limit, replace crankshaft bearing.
MEASUREMENT SPECIFICATION |
Bearing caps end play |
0.06-0.26
mm (
0.0023-0.010
in )
|
MEASUREMENT SPECIFICATION |
Bearing caps end play |
0.30
mm (
0.0118
in )
|
Sensor wheel
-
Remove the crankshaft sensor wheel.
-
Check the crankshaft sensor wheel for damage, cracks and wear. Replace if necessary.
-
Check the clearance between crankshaft sensor wheel and crank position sensor with depth gage.
MEASUREMENT SPECIFICATION |
Clearance between crankshaft sensor wheel and crank position sensor |
0.5-1.5
mm (
0.020-0.059
in )
|
NOTE
-
Measure the depth of the top of sensor wheel tooth and the outside of transaxle housing.
-
Measure the difference between sensor length and depth.
-
Sensor length is the distance between the end of sensor and inner point of contacting face.