Crankshaft and Bearings Cleaning and Inspection
- J 45059 Angle Meter
- KM-470-B Angular Torque Gage
- Coat the crankshaft bearings with engine oil.
- Install the upper crankshaft bearings into the engine block crankshaft journals.
- Install the lower crankshaft bearings into the crankshaft bearing caps.
- Install the crankshaft.
- Inspect the crankshaft end play with the crankshaft bearings installed.
- Check for permissible crankshaft end play. Refer to Engine Mechanical Specifications .
- With the crankshaft mounted on the front and rear crankshaft bearings, check the middle crankshaft journal for permissible out-of-round (runout). Refer to Engine Mechanical Specifications .
- Inspect all of the crankshaft bearing clearances using a commercially available plastic gauging (ductile plastic threads).
- Cut the plastic gauging threads to the length of the bearing width. Lay them axially between the crankshaft journals and the crankshaft bearings.
- Install the crankshaft bearing caps.
- Install the crankshaft bearing cap bolts.
Tighten: Tighten the crankshaft bearing cap bolts to 50 N.m (37 lb ft). Using the J 45059 or KM-470-B (1) tighten the crankshaft bearing cap bolts 45 degrees plus 15 degrees.
- Remove the crankshaft bearing caps.
- Measure the width of the flattened plastic thread of the plastic gaging using the scale printed on the plastic gaging package.
- Inspect the bearing clearances for permissible tolerance ranges. Refer to Engine Mechanical Specifications .
IMPORTANT:
Grease the crankshaft journals and lubricate the crankshaft bearings slightly so that the plastic gauging thread does not tear when the crankshaft bearing caps are removed.
NOTE:
Refer to Fastener Notice
in Cautions and Notices.
Fig 5: Measuring Plastic Gaging Flattened Plastic Thread Using Scale Printed On Plastic Gaging Package