Lincoln Nautilus: Engine System - General Information / Connecting Rod Bearing Journal Clearance. General Procedures
Check
NOTE:
Refer to the appropriate Section 303-01 for the specification.
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NOTE:
The crankshaft connecting rod journals must be
within specifications to check the connecting rod bearing journal
clearance.
Remove the connecting rod bearing cap and connecting rod bearing.
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Position a piece of Plastigage across the bearing surface.
-
NOTE:
Do not turn the crankshaft during this step.
Install and tighten to specifications, then remove the connecting rod bearing cap.
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Measure the Plastigage to get the connecting rod bearing
journal clearance. The Plastigage should be smooth and flat. A changing
width indicates a tapered or damaged connecting rod or connecting rod
bearing.
Make sure the oil in the crankcase is of the correct
viscosity and at the correct level and that the battery is correctly
charged. Operate the vehicle until the engine is at normal operating
temperature...
General Equipment
Dial indicator
Dial indicator fixture
NOTE:
Refer to the appropriate Section 303-01 for the specification.
Position the crankshaft to the rear of the cylinder block...
Other information:
Removal
NOTE:
This step is only necessary when installing a new component.
NOTE:
The PMI process must begin with the current RGTM installed. If the
current RGTM does not respond to the diagnostic scan tool, the tool may
prompt for As-Built Data as part of the repair...
Preliminary Inspection
Verify the customer concern by carrying out a road test on a
smooth road. If any vibrations are apparent, Refer to the Symptom
Chart: NVH.
To maximize tire performance, inspect for signs of incorrect
inflation and uneven wear, which may indicate a need for balancing,
rotation or front suspension alignment...