OBSOLETE - Motor used in 940 timer assemblies.
Voltage rating 8.5 to 13 VAC, 50 Hz, 2/3 rpm.
12VAC,50Hz 2/3RPM CCW 3W Timer Motor. Part No. 1001547
60 Hz version used in USA, also OBSOLETE, but we have a couple left ( as of April 2013 ).
If you have the Autotrol 255, then the best option would be the Logix 740 Upgrade Kit, or a complete new Autotrol Valve, since parts for the 940 and 960 are no longer available.