Removing Drain Impeller Bits
The picture of your failed drain impeller is what I expected to see when you first described the problem you were having with poor draining performance. Back when these machines were popular we would often do several drain impeller replacements a DAY, the 18-20 KA DWs also had lots of problems with broken drain impellers from foreign objects getting caught in the pumps. KA didn't didn't cure this problem till the introduced the all new new pump design used in the KD 21 and 22 machines.
I would remove the hose and drain valve and check for any bits of stuff stuck in the hose or drain valve, doing this will not likely cause any problems. You may also want to replace this section of hose and the two clamps unless the original is in great shape, automotive heater hose of the correct diameter will work great for the temperature and pressure involved here.
John
The picture of your failed drain impeller is what I expected to see when you first described the problem you were having with poor draining performance. Back when these machines were popular we would often do several drain impeller replacements a DAY, the 18-20 KA DWs also had lots of problems with broken drain impellers from foreign objects getting caught in the pumps. KA didn't didn't cure this problem till the introduced the all new new pump design used in the KD 21 and 22 machines.
I would remove the hose and drain valve and check for any bits of stuff stuck in the hose or drain valve, doing this will not likely cause any problems. You may also want to replace this section of hose and the two clamps unless the original is in great shape, automotive heater hose of the correct diameter will work great for the temperature and pressure involved here.
John