We don’t usually recommend DIY garage door repair for most common garage door issues. Why? Many of the moving parts can be dangerous to deal with—if you remove the wrong thing your entire door might come crashing down, and it is possible to seriously injure yourself. For Sacramento homeowners dealing with a broken garage door trolley, this is one of the few repairs you can safely handle yourself.
What is a Trolley Carriage, Exactly?
The trolley on a garage door opener is the rail that connects the garage door to the garage door opener. One end sits at the center of the garage door header, where the torsion springs are, and it runs to the garage door opener’s motor unit. The trolley carriage sits on the trolley rail and uses a belt, chain, or cable to pull the garage door open and lower it closed.
The trolley carriage is possibly the most important of the garage door’s moving parts, along with the door’s torsion springs, of course. On overhead garage doors, the trolley carriage is where the emergency release is located, and it’s also how you can manually pull the door open and closed via a rope that hangs from it.
How Do I Know my Trolley Carriage is Broken?
When you try to open your garage door, does the trolley carriage move but the door doesn’t open? This is the telltale sign that you’ve got a broken trolley carriage. Luckily, for most garage door openers, you can easily find a replacement trolley carriage for about $25 to $40, depending on the model. It’s a fairly easy garage door part to replace yourself; all you need are some simple household tools and a few garage door parts.
Repairing a typical garage door trolley usually takes less than 30 minutes and is completely safe to do, since because the trolley carriage is broken, the door is already down and there’s no way for the chain or cable to slip.
Preparing the Garage Door for Trolley Repair
- First, position the overhead door in a closed position. It likely already is, but it is integral to your safety for the garage door to be closed before you disengage it. Otherwise, it could come crashing down, which we don’t need to tell you is very dangerous.
- Pull the emergency ripcord, which is generally a red cord connected to the opener and the carriage. This is what connects the automatic opener to the trolley carriage. It will let you manually close and open the door. (Don’t worry. Reinstalling it is easy. Simply raise the door with your automatic opener, and it will automatically reconnect.)
- Next, pull the emergency release towards the garage door. This will disconnect the door from the door opener’s motor.
Replacing the Trolley Carriage
- To start, clamp the cable/chain to the rail before you do anything else. This way, the chain remains in its correct placement on the sprocket, which will save you a lot of time later when you have to readjust the tension of the cable/chain.
- Once you’ve secured the chain, separate both ends from the trolley carriage.
- Disconnect the rail from the header, moving the rail to the side.
- Slide off the old trolley and then slide on the new one.
- Reattach the chain to the trolley carriage and adjust the tension so the chain is tight but not over exerted.
- Replace the trolley on the belt drive (reversing what pulling the emergency cord did).
- Once you’re finished, give your garage door a test run; you should be good to go.
Call Us Anytime if You Have Trouble
This is a fairly simple and safe repair for you to do yourself on your broken garage door. But if you have any problems, concerns, or questions, you can call SACS GARAGE DOOR REPAIR anytime of the day or night, 7 days a week. We’ll be happy to simply give you advice, or even come out and take a look at it. Our garage door repair technicians are local to the Sacramento area, friendly, insured, and experienced—and we offer a 100% customer satisfaction guarantee.
Troubleshooting Garage Door Opener Repair
But what if it’s the opener and not the garage door’s trolley carriage? Often times, when your garage door opener is misbehaving, it’s an easy remedy, not even a repair. Sometimes it’s just a matter of changing the batteries in your remote or fixing a fuse in the fuse box. Here are a couple simple things you can check before you consider whether your garage door opener might need repair:
- If you push the button on your remote and the garage door doesn’t budge at all, it’s probably a power issue. Start by replacing the batteries in your remote. Next, check to see if the opener itself has become unplugged or the battery backup has been depleted.
- If there are other lights in the garage or house not working, it’s probably a blown fuse. Check your home’s fuse box and see if any of the switches have flipped.
- Try to move closer to the door. It may be possible that your antenna is out of range. Check the antenna to see if it is damaged.
- You might need to reset the programming on your opener, remote, and keypad. Consult your operating manual or look online for specific instructions for your garage door opener; each model is different.
- If the garage door is stuck open, or keeps kind of closing and then reversing, you might have a problem with the sensor eyes. Overhead garage doors have a sensor located at both sides of the bottom of the frame. These are there so the door doesn’t lower onto someone or something. If your sensor eyes have become dirty, misaligned, or are experiencing too much sunlight intrusion, your garage door won’t close. Cleaning the eye sensors on your overhead door is probably the simplest at-home garage door repair of all.
Quality Garage Door Service for the Community of Sacramento
We’ve been faithfully serving the Sacramento area for years with quality garage door installation and repair. We are garage door experts, and we pride ourselves on our friendly, quality, and efficient customer service. All of our work is certified and guaranteed. You don’t have to worry about uninsured workers or paying a whole fee just to be left with a half-finished project. Our business model is centered on serving our customers like they’re our own family, so if you’re not completely satisfied, we’ll fix it until you are. That’s our policy.
Frequently Asked Questions
If the trolley carriage moves but your door stays shut, the carriage is likely cracked or detached. In Sacramento’s climate, temperature swings can accelerate wear on older trolley rails. This is the most common sign you need garage door trolley repair.
Yes, for most standard openers. Since the trolley carriage is already broken, the door is down and the chain or belt has no tension. Follow the steps above, clamp the chain first, and work with the door closed. If you’re unsure, call a local Sacramento technician.
A replacement trolley carriage costs about $25 to $40 for the part. If you hire a Sacramento garage door repair service, labor typically adds $75 to $150 depending on the opener model and whether same-day service is needed.