Bosch Wfb 2004 Concrete Block Problem

This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.

Bosch Wfb 2004 loose concrete block with broken mounting lug

The problem

The concrete balance block on a Bosch Wfb 2004 had become loose and was bouncing around. The original concern was that the retaining bolts and rubber washers/spacers were said by some suppliers to be obsolete.

Likely cause

The fixing hardware for the concrete block was initially suspected, but the stronger evidence is that the metal mounting lug/protruding strip the retaining bolt passes through had sheared. A forum reply also noted that when a weight comes loose it can damage tub brackets, potentially making the machine beyond economical repair, but this was not confirmed on this machine.

What fixed it

The original poster later found that the required fixing parts were available as a special order. However, after discovering the sheared metal lug, no confirmed repair was completed in the discussion. The most supported conclusion is that the mounting point had failed and the machine would need further assessment to determine whether a viable repair such as tub replacement was possible. Further diagnosis should be carried out by a suitably qualified appliance engineer.

Checks to try

• Age of the machine was discussed as approximately 8-12 years.
• The retaining nuts had been tightened and remedial action had already been tried without success.
• A supplier was contacted and identified the retaining parts as available on special order.
• The original poster found that the metal lug/protruding strip for the retaining bolt had sheared.

Parts or tools mentioned

• Retaining bolts
• Rubber washers/spacers kit
• Loctite