Dishwasher replacement: swapping an old unit (disposal knockout, reused connections)
A swap is faster than a new install but hides traps: old supply lines and fittings that should be replaced, a disposal inlet that still has its knockout plug if the disposal is also new, and an old drain path with no high loop. Treat every connection as new.
Cross-checked ~120 min moderateBrands: All
Before you start
- Breaker off and verified dead; water off at the stop.
- Expect water in the old hoses and pump: have a pan ready.
- Two people to pull and set the units; protect the floor.
Diagnostic steps
Unlock all 6 steps with expected values
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