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Universal Trash compactor is making loud noise

01 - Universal Trash Compactor Trunnion Nut

Inspect the trunnion nut. If the trunnion nut is dry, lubricate it. If the trunnion nut is stripped, replace it.
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Highly Likely

02 - Universal Trash Compactor Drive Gear

Check the drive gear to see if it is loose on the shaft. If the drive gear is loose, try tightening the mounting nut or set screw. If the drive gear is still loose after tightening the mounting nut or set screw, or if the teeth on the drive gear are worn, replace the drive gear.
Common

03 - Universal Trash Compactor Gearbox

Inspect the gears for damage. If the gears are worn, loose, or damaged, replace them. Depending on the model, some gears may be purchased as an assembly.
Less Common

04 - Trunnion Nut or Gears Need to be Greased

Over time the gears, trunnion nut, and power screw can dry out and start to make noise. When this happens you can usually grease the components to make them work smoothly and eliminate the noise.
Less Common

05 - Universal Trash Compactor Drive Chain

Inspect the drive chain to determine if it is loose. If the drive chain is loose and cannot be tightened, replace it.
Less Common

06 - Universal Trash Compactor Drive Motor

The drive motor might be defective. Before replacing the drive motor, check all of the more commonly defective parts. If none of these parts are defective, consider replacing the drive motor.
Uncommon But Possible

07 - Universal Trash Compactor Directional Switch

When the compacting ram reaches the top of the compactor, the directional switch interrupts all current flow to the motor. If the directional switch fails, the motor can continue to run after the ram reaches the top which can eventually result in the trash compactor becoming very noisy during operation. To determine if the directional switch is defective, use a multimeter to test it for continuity. If the directional switch has shorted contacts, replace it.
Uncommon But Possible