Which Technician is correct regarding a flywheel with hot spots and resurfacing?

Which Technician is correct regarding a flywheel with hot spots and resurfacing?

• A. Technician A only
• B. Technician B only
• C. Both Technician A and Technician B
• D. Neither Technician A nor Technician B

Answer: (A)

Hot spots on a flywheel mean the surface overheated in places, causing glazing or roughness that can lead to uneven clutch engagement. The right fix is to restore a true, smooth friction surface by resurfacing, but only if there’s no cracking and the amount of material that must be removed stays within the manufacturer's limits. After resurfacing, you must recheck runout and inspect the ring gear for damage to ensure everything will function correctly. If there are cracks, deep damage, or resurfacing would reduce the flywheel thickness below spec, replacement is needed. So the correct stance is to resurfacer the flywheel when the hotspots are limited and within spec, which is why that option is the best choice.

Hot spots on a flywheel mean the surface overheated in places, causing glazing or roughness that can lead to uneven clutch engagement. The right fix is to restore a true, smooth friction surface by resurfacing, but only if there’s no cracking and the amount of material that must be removed stays within the manufacturer's limits. After resurfacing, you must recheck runout and inspect the ring gear for damage to ensure everything will function correctly. If there are cracks, deep damage, or resurfacing would reduce the flywheel thickness below spec, replacement is needed. So the correct stance is to resurfacer the flywheel when the hotspots are limited and within spec, which is why that option is the best choice.