Washer produces a high-pitched squealing or rumbling noise when spinning.

Safety first: Unplug the washer. Bearing replacement involves heavy components; consider professional service.

Step-by-step checks:

• Spin drum by hand: With the door open, rotate the drum. A rough, grinding, or rumbling feel/noise indicates bearing wear.
• Check for play: Try lifting the drum up and down at the front. Excessive movement suggests bearing or spider failure.
• Inspect for leaks at rear: Remove the rear panel and look for rust streaks or water marks around the bearing area.
• Plan repair: On many Grundig models, bearings are integrated into the outer tub. Replacement may require a complete tub assembly or splitting the tub to press in new bearings and seal. This is a complex repair (disassembly of drum, motor, and tub) and is usually rated for experienced DIYers or technicians.