Lincoln Nautilus: Engine System - General Information / Crankshaft Main Bearing Journal Clearance. General Procedures
Check
NOTE:
Refer to the appropriate Section 303-01 for the specification.
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NOTE:
Crankshaft main bearing journals must be within specifications before checking journal clearance.
Remove the crankshaft main bearing cap and crankshaft main bearing.
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Position a piece of Plastigage across the crankshaft main bearing surface.
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NOTE:
Do not turn the crankshaft while carrying out this procedure.
Install and tighten to specifications, then remove the crankshaft main bearing cap.
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Measure the Plastigage to get the crankshaft main
bearing clearance. The Plastigage should be smooth and flat. A changing
width indicates a tapered or damaged crankshaft or crankshaft bearing.
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...
Special Tool(s) /
General Equipment
100-001
(T50T-100-A)
Slide Hammer
Materials
Name
Specification
Motorcraft® Threadlock 262TA-26
WSK-M2G351-A6
Repair
All core plugs
NOTE:
Cylinder block core plug shown, cylinder head core plug similar...
Other information:
Preliminary Inspection
Visually inspect the CV joints, housing, boots, and clamps for obvious signs of mechanical damage.
If an obvious cause for an observed or reported concern is
found, correct the cause (if possible) before proceeding to the next
step
If the cause is not visually evident, verify the symptom and REFER to Symptom Chart: NVH...
WARNING:
Before working on or disconnecting any of the fuel tubes or fuel
system components, relieve the fuel system pressure to prevent
accidental spraying of fuel. Fuel in the fuel system remains under high
pressure, even when the engine is not running...