Red Output Gear for 440 and 440i Timer assembly used on some Autotrol 155, 1550-TC, 163, 168, 255, 263, 268.
Very Old part number 420B52.
NEW COLOR IS BLACK ( since 2005 ) for this Gear ( some manuals list pn 1001583 ).
Identical to older Red version.* As of 2016 = Obsolete Item - But we have some in stock, and will sell until they are gone.Click to Enlarge Diagram
440 and 440i Timer Repair Guide
Auto Regeneration trigger FAILURE can be caused by this Output Gear ( when the 2 1/2 over hang teeth snap off ), and / or the # 8 Black gear that drives it strips ( and sometimes the post that holds the # 8 gear breaks off housing )
To remove the Output connector from the Output Gear, you must Pull really hard.
And the output connector is then Pushed into the new part ( also requires a lot of force.. it's a tight fit ).
Noting the Gear and Connector are "keyed" and only fit one way ( so you can't do it wrong ).