I made 500 yuan today! It turns out that replacing the garage door motor is really easy, and if you save it, you will make money!

Foreword

It has been almost 15 years since I bought my garage. In recent years, the electric rolling shutter has become obsolete. Something went wrong.

The door suddenly fell down the year before last. One side was high and the other was low. Although it could still be raised and lowered, there was a big gap after closing. I didn\’t know what was wrong at the time, so I looked for a repairman online. It cost 150 yuan to repair the door. When the door was being repaired, I stayed by the side. After seeing it, I understood that rolling shutter door repair is really very simple. It’s just that I don’t have enough contact with it and I’m not familiar with it.

When it was being repaired, there was already something wrong with the tubular motor, the brakes were not working, and the door would automatically slide down when it reached the bottom. It was only repaired at that time. The master didn\’t explain it, he just used phoenix-tail screws to re-fix the door curtain, and just drove in six screws.

The master is also very good at business. When he left, he didn\’t forget to put the contact number label in the garage, in case I forgot and couldn\’t find the phone when I needed it.

After that, during use, the door kept sliding downwards. When it reached the bottom, the motor could not stop automatically, so it had to be stopped manually by remote control. Even so, the door curtain must be rolled up every three or four months. This is to use the up and down adjustment function of the tubular motor to roll the door curtain upward more.

Because I often slide down, I couldn\’t stop when I reached the top last month. I rolled over several times and derailed.

Last week, the problem became more serious. The motor stopped when it was halfway down, and the door curtain automatically slid down, making a very loud noise.

Opening a door is particularly scary. You need to stop manually to open the door and close the door. From time to time, you need to jump high and pull down.

I really don’t know which day, it will either turn on but not turn off, or it won’t turn on at all. Therefore, garage door maintenance has to be put on the agenda.

It\’s just that it\’s been too difficult to make money in the past two years. I called and inquired. Replacing the garage door motor costs seven to eight hundred yuan. They said it would be a full copper motor. . I checked online and found that a tubular motor for an electric rolling shutter door only costs more than 100 yuan. There are 3-inch and 4-inch motors. The motors also have different pulling forces, such as 80N, 100N, 120N, etc.

I have always done circuit maintenance. I have never done mechanical maintenance like garage doors. However, I think there is no equipment that is difficult to repair, but this requires some equipment.A handful of strength.

I consulted several companies online and watched several videos. I felt that replacing the motor was really simple and not difficult at all, so I spent more than 200 yuan. I bought a tubular motor with copper wire, 3 inches and 100N.

Let me tell you a little more. The iron pipe circumference of the 3-inch tubular motor rolling shutter is about 80CM. You can use rope or Measure out with a tape measure.

I would like to praise the logistics in Jiangsu, Zhejiang and Shanghai. It is so convenient. A motor weighing seven or eight kilograms arrived in one day.

When I went to work, I checked the express delivery and saw that it had arrived at the inn. I thought that the temperature would drop a lot when it gets dark, and it would be much colder in the garage, so I might as well take advantage of the opportunity. Sun, go home early and replace the motor.

1. Tools that need to be prepared

1. Wire cutters

It is used to remove the fixing pins at both ends of the tubular motor. The pin on the motor side is very large and it is more difficult to remove it. The pin on the other one is relatively small and comes off easily.

2. Electric drill

Used to drill holes when fixing the door curtain and motor. If the old motor is not fixed with screws but with rivets, you will also need to use an electric drill to remove the old rivets.

3. Drill bits

According to actual needs, 4MM and 5MM drill bits are needed Prepare and use with rivets.

4. Wrench

This depends on the actual situation. You can first Put down the rolling door and see what the original door curtain is fixed with. Is it a screw or a rivet? If it is a hexagonal screw, if there is no electric work, an ordinary adjustable wrench will also work.

5. Ladder

A ladder is necessary because you have to work at high places. The ladder you prepare needs to be strong, and people need to remove the iron reel when standing on it.

6. Rivets

Rivets are used to fix the motor and door curtain , 4MM and 5MM rivets are enough, and the length needs to be 25 or 30MM

7. Rivet gun

If there are rivets, you must use a rivet gun. They are sold online, and the price is only two or three yuan a piece, and they also come with rivets.

8. Bricks

Bricks are used to pad the falling door curtain, which requires 6-8 bricks. The height of the pad is about 36cm, which makes it easier to disassemble the door curtain. You may not have experienced that this kind of electric rolling shutter is really heavy and difficult for two people to lift, so you need to prepare a few bricks in advance and prop up the curtain in three positions: left, middle and right.

If you don’t get up early, don’t dismantle the curtain rashly.

9. Rope

If two are installed together, no rope is needed. One person can only tie a rope to one side, pick up the drum at one end of the motor, and then slowly climb up the ladder. Without the motor end in the rope loop, you can free your hands at this time, snap the motor end back into place, and then install the pin.

10. Hammer

A hammer may be needed, so it won’t be a hassle to prepare one, because the garage door cannot be opened during replacement, and people cannot get out. If the garage does not have a back door, it will be short of tools or something. There needs to be someone outside the door to say hello.

11. Insulating tape

The joints of the old and new motors may not match , you may need to reconnect the wires, and insulating tape is indispensable.

12. Crowbar

As long as nothing unexpected happens, the crowbar is It’s useless. But there are crowbars available online now, and they’re not expensive. , just in case, if it is really the first time to replace the tubular motor, it is better to prepare one. If there is an accident and the door cannot be opened, you can use a crowbar to pry open the door curtain bit by bit. Just put something on it and you can go out.

2. Installation process

It is best to have two people when replacing the motor of the garage door, which is faster and saves effort. It can be done by one person, but it is really troublesome. It was my first time to change it, and it took me three hours in the garage to get it completely done.

If the installation is really not good, or there is a problem with the new motor, or the new motor may be damaged during the installation process, you may need to put the old motor back in place. Open the garage door.

1. Disassembly

1), separate the door curtain

The disassembly of the garage door is relatively simple. Knock out the rivets or remove the phoenix screws to separate the door curtain and roller. If it is riveted, just use a drill to knock out the old rivets.

2. Remove the manual connecting rod

The manual lifting rod brought to the drum can be removed. The C-shaped buckle can be removed by snapping it to both sides, and the upper and lower parts are separated.

3), unplug the fixing pin

4) Disconnect the motor cable

To disassemble the motor cable, you need to prepare corresponding tools according to the situation. The new motor I bought is plug-in, but The controller is fixed with screws, so I also prepared a small screwdriver for disassembling and fixing the wires.

5) Remove the reel.

After removing the door curtain, the iron roller is not very heavy. It weighs about 20 pounds and can be picked up with two hands. However, you need to pay attention when going up and down the ladder. You can first remove the motor from the roller. One end of the motor touches the ground so that the drum can lean against the wall.

2. Replace the motor

1) Since the motor is being replaced, you need to check whether the size of the newly purchased motor matches and whether the rotation direction is the same.

2) Use an electric drill to remove the fixing rivets of the old motor, or remove the fixing screws.

The old motor was fixed with four rivets. When disassembling it, I used a drill to drill it deep enough to remove the rivets. Thinking about it, the weight of the entire rolling shutter door is due to these four rivets. The pull was too shallow and it would have fallen off a long time ago.

3) Pull out the old motor.

As long as the four rivets holding the motor are removed, the old motor can be easily pulled out. I compared the new and old motors and found that the old motor is indeed smaller.

4), install new motor

When installing the new motor, you must consider the fixing of the door curtain. The motor needs to be fixed perpendicular or parallel to the fixed position of the door curtain. If the motor is fixed in the wrong direction, then fix the door curtain. You need to call the phone firstThe machine is powered on to adjust the angle.

5) If the old and new motors have the same length, you can directly drill holes at the original motor fixing holes. If the old and new motors are not the same length, you will need to mark the outer wall of the drum before installing the new motor.

6) Use screws or rivets to secure the new motor firmly.

3. Installation

Reel It is best to install it with two people. It will be much easier if one person lifts one end and goes up the ladder at the same time. It does take a lot of effort for one person.

Because there is no fixed terminal on the motor side that is active, and I installed it alone, it is difficult to use it to snap into the card slot. So I first made a ring with a rope, then picked up the drum, put it into the ring and hung it up. At this time, you can first align the slot at the end of the motor and fix it with a pin. Then go down and move the ladder over, go up and position the other end and secure it with pins.

Because electric rolling shutters will have emergency manual lifting functions, manual lifting rods must also be installed. I turned the motor upside down when I installed it and had to adjust it again. Of course, there is no need to disassemble the motor, just pull out the pin and rotate the entire drum 180 degrees.

After the roller is installed, you need to put the door curtain on the roller. This is a laborious task. It is very laborious without the appropriate tools. Because of the installation of the motor, the position of the roller will change at this time, and the door curtain cannot be fixed in place, so the holes need to be drilled again. It also took me a lot of time to fix the door curtain. .

3. Debugging process

1. Top positioning

Debugging is relatively simple, after I replaced the new motor, installed it and fixed it, I connected the power cord, pressed the up and down button but there was no response, and then pressed the down button, it started to rise. But it stopped when it reached a height of one meter.

At this time, I used the adjustment rod that came with the motor to adjust the up potentiometer. I adjusted it many times in the + direction, but there was no response at all. Then I adjusted the potentiometer down, but there was no response no matter whether I adjusted it left or right.

Just turn left, turn right, and finally adjust the top positioning.

2. Bottom positioning

Bottom positioning is also simple. My door curtain does not reach the bottom when it is lowered, so I just adjust it directly. Just lower the potentiometer so that the curtain reaches the ground. If the motor does not stop when it touches the ground when moving forward, press the stop button up at this time, then adjust the down potentiometer, and use the door curtain to scroll upward.

3. Up and down reversed

The functions of the up and down buttons are reversed, but The stop function is good, so I didn\’t adjust the line sequence and just used it like this. One ​​day I will clear the internal code of the remote control and just reverse the up and down when studying.

Postscript:

Everything is It requires careful consideration, so the tools listed above are still good to use. It was my first time to replace a tubular motor, and I had never seen anyone else replace a tubular motor. I just watched a few videos online, so I did it myself.

Fortunately, everything went smoothly, and it took three hours. Mainly because I had no experience, and it took a lot of effort to disassemble and install it, so I was crossing the river by feeling the stones.

If the garage door really cannot be opened, I may have to call 119 myself.