KUDS-18 Timer
I have good used timers, $100 + shipping.
The extra motor you have will work on the KDS-18, you just have to wire in the external relay to make it run.
If this DW is critical to your canning operation I would have a 2nd DW, The KDS-18 DWs were very good DWs 45 years ago, BUT very complicated for their day and not the most reliable either, its a little like jumping into a 1976 Mercedes and driving across the country for your wedding that you can not be late for.
John L.