Ranger 4WD V6-3.0L VIN U (1997)
Flywheel: Component Tests and General Diagnostics
Clutch Surface
Flywheel Clutch Surface Machining Inspect the flywheel for cracks, heat check, or other damage that would make it unfit for further use. Acceptable
flywheels may be repaired by polishing with fine grade (400 grit) sandpaper. Flywheels may be resurfaced to remove scratches or grooves. After
resurfacing, the flywheel thicknesses must not be less than the dimensions noted in the chart in Specifications.
Mount flywheel rigidly on crankshaft mounting flange.
After machining:
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Surface runout must not exceed 0.13 mm (0.005 inch) TIR; surface finish must be in the range of 4.0/1.3 micrometer (160/52 microinch).
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Major diameter of dowel pin (press-fit diameter) must not extend above the new surface.
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The clutch pressure plate retaining bolts must screw into the flywheel under hand torque to within 1.50 mm (0.06 inch) of new surface.
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Flywheels with dimensions less than the charted dimensions must not be used; install new service flywheel.
Dimension "A" is the minimum acceptable dimension from the crankshaft mounting surface to the new resurfaced clutch face surface. Dimension "B" is
a referenced minimum acceptable dimension for the overall width of the outer flange.
Runout
1. Remove spark plugs.
2. Install Dial Indicator with Bracketry TOOL-4201-C or equivalent so indicator points rest on face of the flywheel.
3. Hold flywheel and crankshaft forward or backward as far as possible to prevent crankshaft end play from being indicated as flywheel runout.
4. Set indicator dial on zero mark. Turn flywheel one complete revolution while observing Total Indicator Reading (TIR). If TIR exceeds
specification, flywheel and ring gear assembly must be replaced.
