In most Rite-Hite dock levelers, a ring rolls in the curve of a lip keeper as someone walks across the deck of the dock leveler. This allows the lip assist bar attached to the ring to push the lip up. Over time, the bar connecting the ring and the lip assist bar wears out, and the ring is unable to stay on the track of the lip keeper.This indirectly prevents the lip from raising when someone pulls the pull chain. This tutorial demonstrates how to properly replace a worn lip assist bar in a Rite-Hite dock leveler.
Looking to replace an aging garage door or update the curb appeal of your home? We have completed garage door installation projects for some of our region’s most prestigious addresses. No matter where you live, however, you can count on our team for service that treats your home the way a good neighbor should. We understand that, as with any home improvement project, minimizing disruption is a fundamental priority. Our installation team will arrive on time, fully equipped with all the necessary parts and tools to get the job done according to schedule.
Garage door springs come in two styles: torsion (see above), which mounts on the header above the door, and extension (Photo 1), which floats above the upper roller track. In the past, extension springs were safer to install but didn’t have containment cables running through the center of the spring. Without cable, these springs become dangerous, heavy whips when they break. They also tend to be noisier than torsion springs, and we recommend you use them only if you don’t have the 12 in. of headroom above the door that a torsion spring requires.

Whether it’s a large commercial project or a single residential garage door installation, you can be sure Cornwell Door Service will get the job done right. Our team has a combined 120 years of experience and receives extensive training both on the job and off. This ensures we are fully capable of working with the newest and most advanced products on the market today. As an authorized installer for several leading manufacturers, we are trusted by some of the largest names in our industry, in part because we have made the commitment to excellence they require.


To make sure the job gets done right, our professional installers are local, licensed and insured. With a 9.7 out of 10 VOC score, our garage installers will exceed your expectations, provide reliable service, and install attractive garage doors that will transform your home’s appearance. All labor, products and installations are 100% backed by The Home Depot. Service you can trust.
If your garage door's spring breaks, stops working properly, or snaps, you'll lose the ability to open and close your garage door. This could happen due to a variety of issues, like normal wear and tear or from extreme temperature changes in a short amount of time. Spring replacements require a quick response from a garage door provider near you. Contact The Home Depot and a local, background-checked technician will respond within 24 hours.
My son Owen and I thank you for the truly wonderful, informative and entertaining experience provided by the TOH staff, crew and trades-people at the Pro2Pro Brookline event. From Elizabeth - who welcomed us to the event, to Chris, Kevin and others who were wonderful during the orientation session (answering questions that I'm sure you have heard dozens of times before), to Charlie, Kevin, Richard, Heath (the electrician) and Thomas (the program director), you helped us Insiders to understand and appreciate the pride that you take in your work. It was refreshing. I loved the pictures and accompanying text of the event that you posted. I have to say in closing to Chris, Kevin and Thomas (in particular) you gave my son, a budding landscaper, the impetus to continue his pursuit of the trades. Kudos to you all and keep up your great work!

However, if you are confident that you don’t just need new batteries, make sure to call a professional. A service person with a lot of experience will be able to look at the problem and quickly diagnose the issue, saving you precious time. Again, while you may be able to save money in the short term by taking a day off and troubleshooting the problem yourself, the amount of energy and time lost as you search out the issue will quickly surpass the cost of a professional repair.
The tech that was scheduled to repair my broken torsion spring was professional and very detailed. He arrived 30 minutes early, was completely prepared to do all the work. He let us know every step before he took it and was upfront about the costs and ways to save money and remain safe. My garage door was fixed within 1 hour. I would highly recommend!

Garage Door Service

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