F 150 2WD Lightning V8-5.4L SOHC SC VIN 3 (2001)
17. Check the torque required to rotate one differential side gear.
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Mount the differential case and special tool in a vise.
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The initial minimum break-away torque, if original clutch plates are used, must be within specification. The minimum rotating torque required
to keep the differential side gear turning with new clutch plates may vary.
18. Install the differential case.