F 150 2WD Pickup V8-5.4L Prop SOHC VIN Z (1998)
2. Identify the (A) third gear synchronizer blocking ring and (B) first, second and fourth synchronizer blocking ring.
3. Inspect the (A) synchronizer blocking rings for proper contact with (B) cone surface of gears.
4. Inspect the (A) synchronizer blocking rings for wear on (B) gear.
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If clearance is less than specification, replace ring or gear.