Worn hole in Bosch washing machine sump hose

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

Bosch WAE24164GB sump hose repeatedly wearing through and leaking

The problem

A Bosch Classixx washing machine, model WAE24164GB, developed a leak. The sump hose was found with a small hole and was replaced, but a new hose then developed a similar hole in the same place after a further wash.

Likely cause

The strongest diagnosis in the discussion is external rubbing of the sump hose when the drum is under load, rather than a one-off defective hose. Possible causes suggested were contact with another component such as a cable tie, or the drum/suspension not sitting centrally.

What fixed it

Recommended action was to determine whether the hole was caused internally by a foreign object or externally by chafing. The accepted advice was to inspect hose clearance with the drum weighted as it would be during use, check whether the suspension is twisted, confirm the drum is centrally positioned in the cabinet, and trim back the cable tie if it appears to be the contact point. The exact repair was not confirmed in the thread.

Checks to try

• Inspect whether the hole was caused from inside or by external rubbing
• Push down on the drum to simulate a full load and check what the hose may catch on
• Check hose clearance with a heavy load in the machine
• Check whether the suspension is twisted
• Check that the drum is held centrally in the casing
• Check whether the cable tie near the drum is contacting the hose

Parts or tools mentioned

• Sump hose
• Cable tie