1 Engine Measurements: Engine Measurements: Bottom End Bottom End Engine Oil Bearing Clearance Engine Oil Bearing Clearance Measurements: Measurements: Using Either Micrometers and Using Either Micrometers and Telescoping Gauges or Plastigage Telescoping Gauges or Plastigage
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Engine Measurements: Bottom Endautotechl.com/MATChapters/EngineMeasurementsBottomEnd2.pdfEngine Bearing In Place Torque piston rod nuts/bolts to manufactures torque specs 12 Telescoping
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Engine Measurements:Engine Measurements: Bottom EndBottom EndEngine Oil Bearing Clearance Engine Oil Bearing Clearance Measurements:Measurements:Using Either Micrometers and Using Either Micrometers and Telescoping Gauges or PlastigageTelescoping Gauges or Plastigage
Learning ObjectivesLearning ObjectivesRecognize the two most common ways to measure engine bearing oil clearance?Understand the importance of engine measurementsFind symptoms of excess engine bearing oil clearanceDetermine which measurements are more preciseDetermine additional crankshaft measurements
Measure Crankshaft To Oil Measure Crankshaft To Oil Bearing ClearanceBearing Clearance
Measure Measure telescoping gauge telescoping gauge with micrometerwith micrometerCompare Compare measurements measurements with crankshaft with crankshaft measurementsmeasurementsAre they within Are they within spec?spec?
Install Bearing CapsInstall Bearing Caps Coat bearing Coat bearing surface with oil surface with oil so Plastigage so Plastigage doesndoesn’’t stick to t stick to the bearingthe bearing
Torque to Torque to manufactures specsmanufactures specs
Caution!Caution!Never rotate Never rotate crankshaft while crankshaft while Plastigage is Plastigage is installed! installed! Severe damage Severe damage can be caused to can be caused to the enginethe engine
Additional InformationAdditional InformationPlace Plastigage on the “no-load” side of the journalCheck crankshaft end-play using a dial indicatorOnly use lint free rags to wipe bearing and journal surfacesOnly use oil from a sealed bottleNever use grease to pre-lube an an engineengine
ReviewReviewWhat are the two most common ways to What are the two most common ways to measure engine bearing oil clearance?measure engine bearing oil clearance?Why is this measurement important?Why is this measurement important?What is a symptom of excess engine What is a symptom of excess engine bearing oil clearance?bearing oil clearance?Which of the two measurements is more Which of the two measurements is more precise?precise?What additional crankshaft measurements What additional crankshaft measurements are required?are required?