Allister, Allstar & Raynor Sprockets - DDM Garage Doors Blog

Posted November 8th, 2021 at 12:53 pm by Dan Musick

The old Allister and Allstar openers use two black sprockets. The one above the motorhead moves to activate the limit switches as the limit dogs reach their shut-off points.

Allstar Model 6500 Garage Door Opener

The one above the door acts as an idler. Raynor used similar black sprockets just for idlers above the door.

Allister Front Idler Sprocket Pictured Above the Garage Door

Over the years the chains stretch, loosen and as a result, the pitch of the chain breaks the teeth on the sprocket. To prevent this problem, Allstar replaced the black sprockets with black pulleys.

Allstar Black Idler Pulley at the End of the Opener Rail Above the Garage Door

In 2021 Allstar quit selling parts for their openers and now we carry a white idler pulley with a similar shape and the 1/2″ hole to secure the pulley to the end bracket. These don’t break when the chain loosens.

Replacement Idler Pulley for Allister and Raynor Sprockets

If the sprocket above the motorhead breaks, you will need to get a new opener. Those sprockets are no longer available.

This entry was filed under News. You can follow any responses to this entry through the RSS 2.0 feed.

Comments are closed.

Unmatched Support. The Right Part. DIY with Confidence!

YES, WE'RE OPEN FOR BUSINESS!Due to the Coronavirus and the Delta varation, we have changed our local order pickup policy at our West Chicago location. To pick up an order you will need to order first. The quickest way to do this is through our online shopping cart. There you can select the local pickup option. Or, you can call 630-293-1337 for assistance and to place your order. When ready, we will call you and your parts will be available for pickup in the front entrance on the north side of the building. Longer items will be picked up on the south side loading dock. Please do not arrive until you have been notified that your order is ready.

COVID / DELTA VARIANT UPDATE! NO MASK, NO SERVICE! When picking up parts please wear a mask. If you don't bring one we'll gladly provide one. Please honor the six foot social distancing rule to protect yourself and our employees. Thank you for your patience and understanding as we all navigate this challenge together. More information is available on our blog titled DDM Adjusts to the COVID-19 Coronavirus. In the same article you will also find documentation and an answer to the question: "Is a garage door repair company a life sustaining business?"

PLEASE NOTE: COVID has interrupted global supply distribution chains resulting in unprecedented delays on incoming door and dock industry products. The result is limited availability of many products, three month delays on incoming shipments, and an inflationary rate of over 50% just this year on many of our products.


web design by erich musick
Copyright ©1999-2021 DDM Web Services, Inc. All Rights Reserved.