Parts for Whirlpool MT4078SPB3: 03 - Oven Cavity Parts

Color: brown. Each prong of this support measures about 4-1/2 inches from the center.

This microwave turntable motor mounts beneath the oven floor and spins the glass tray to help food heat evenly. Replacing a worn motor restores smooth, reliable rotation when the tray stalls, jerks, or makes unusual noises.

• Drives the turntable via the center coupler beneath the cavity floor
• Promotes even cooking by keeping the tray rotating during operation
• Common failure symptoms: tray not turning, intermittent/jerky movement, humming or grinding noise from below
• Helps correct stalling under normal load when the original motor is weak or seized

• Disconnect power at the breaker; microwaves contain high-voltage components that can retain a dangerous charge
• Typically accessed from the bottom of the microwave; remove the bottom cover to reach the motor
• Move wire connectors to the new motor in the same orientation and secure with original hardware
• Ensure the coupler and roller ring are properly seated; test rotation with a cup of water on the tray

Size: 4 x 8mm.

This is a genuine replacement mounting screw used to secure appliance panels and components. It restores proper fastening to reduce vibration and prevent parts from loosening during normal operation. What it does:

• Secures panels, brackets, or trim to the appliance frame
• Prevents rattling or vibration caused by loose fasteners
• Keeps wiring and small components held in place
• Helps maintain proper alignment of removable parts

• Disconnect power to the appliance before servicing
• Use the correct screwdriver or bit to avoid stripping the head
• Start threads by hand, then tighten until snug; do not overtighten
• Keep removed fasteners organized to ensure correct reassembly