The old dishwasher was a heavy thing: the tub was made of steel,
it had a heavy door and a heavy frame, and minimal soundproofing or
thermal insulation. The Hobart machines were good in their day, but this
was an early machine, and it had little space inside and not a very
efficient spraying system.
Here you see installation in progress on the new machine. It may not
be clear from this photo, but the tub is much larger, occupying much of
the standard space allocated in a kitchen for a dishwasher.
This photo shows the cramped space where the business end of the thing
lives. This is your genuine one-twelfth-of-a-turn at each push on
the spanner job.
Note the curled edge of the linoleum, and the brass compression fitting
where the water arrives at the solenoid tap.
In comparison this side biew of the old unit shows the relatively
copious space for the engine (vertically-mounted) and attachments.