Trystan Casey
Electric clocks are beloved by many, from the bedside alarm variety to the vintage Sunbeam clocks. However, they may eventually need fixing due to issues with the motor pinion, worn-out motors, or lubricants hardening. Luckily, there are ways to repair them. This guide will cover the common problems and solutions for electric clocks, including how to identify issues, the tools and parts needed, and step-by-step instructions for disassembling and repairing different types of electric clocks. Whether you're a novice or an expert, with the right knowledge and tools, you can bring your old electric clock back to life.
Characteristics and Values of Fixing an Old Electric Clock
| Characteristics | Values |
|---|---|
| Clock Motor Issues | Worn-out motors, hardened lubricants, disintegrated motor pinions |
| Unusual Noises | Loud noises indicate motor or lubrication issues |
| Missing Parts | Controls, stems, winding keys |
| Case Condition | Metal, plastic, or wooden cases may be refinished, repainted, or polished |
| Power Cord | Replace old cords, test electrical cord for power issues |
| Disassembly | Unplug, remove face cover, screws, and gears; de-solder power cord if necessary |
| Cleaning | Clean with fine metal polish, automobile polish, or electrical contact cleaner |
| Lubrication | Wind clocks periodically to maintain lubrication |
| Gear Issues | Stripped teeth, worn gears, gummed-up clutch on center wheel |
| Replacement | Replace with quartz or digital clock mechanism if beyond repair |
Explore related products
What You'll Learn
Replacing the electrical cord
When replacing the electrical cord of an old electric clock, it is important to take safety precautions. Old cords can become brittle with age and may be dangerous, so it is always recommended to replace them. Here is a step-by-step guide:
- Unplug the clock from the electrical outlet. This is an essential safety measure to ensure that no power is running through the clock during the repair process.
- Carefully remove the old cord. This may involve desoldering the power cord leads from the field coil terminals, so have a soldering iron and some solder on hand. Be gentle, as the insulation on old cords can be fragile.
- Inspect the cord for any damage. Over time, electrical cords can become frayed or brittle, which can pose a fire hazard. If you observe any damage, it is best to replace the entire cord.
- Obtain a replacement cord of the same type and rating. It is important to use a cord with the correct specifications to ensure the clock functions properly and safely. Ensure the replacement cord is long enough and has the correct plug type.
- Install the new cord by soldering the leads to the field coil terminals. Follow the reverse steps of removing the old cord. Ensure a secure connection by soldering carefully and avoiding any damage to the clock's components.
- Once the new cord is installed, securely fasten or route the cord to prevent any strain or accidental unplugging. Make sure the cord is not pinched or twisted, which could damage the insulation.
By following these steps, you can safely replace the electrical cord of an old electric clock, ensuring its continued safe operation and potentially extending its lifespan.
Open Doors: Energy Wasters or Not?
You may want to see also
Explore related products
Cleaning and lubricating the mechanism
To clean and lubricate the mechanism of an old electric clock, you will need to first disassemble the clock. Unplug the clock from the electrical outlet and carefully remove the face cover with a knife blade. Remove the screws from the case and slide out the motor and gears. If your clock has a power cord, you may need to de-solder the power cord leads from the field coil terminals to remove it.
Once the clock has been disassembled, you can begin cleaning the individual components. Use a precision oiler to lubricate the parts. Wind the clock periodically to keep the lubricated parts working. If the clock is noisy, check for loose parts or a dry shaft and lubricate as needed.
If the clock has a leather covering, use a fine metal polish to clean the dial cover, and finish the leather with a neutral shoe polish. For plastic clock housings, start with an automotive rubbing compound and then work your way down to finer polishes.
After cleaning and lubrication, reassemble the movement. Pull out the set knob and turn it clockwise to move the minute wheel through a full rotation, then reverse the direction and turn it through another full rotation. This will help you determine if the minute wheel needs replacement.
Finally, always replace the old cord on electric clocks. Old cords can become brittle with age and may be dangerous.
Electric Pressure Cookers: Safe or Hazardous?
You may want to see also
Explore related products
Fixing the clock face
To fix the clock face of an old electric clock, you will need to remove the old movement. The first step is to carefully pry off the face cover with a knife blade. This will expose the nut that holds the hands on the clock face. This nut should either pop off easily with a light, upward tug or be unscrewed from the clock hand shaft.
If you are unable to unscrew the nut, try holding the "pull to start" knob on the back of the clock to prevent the movement from turning as you attempt to unscrew it. If this still does not work, try a combined unscrewing and pulling motion with a pair of pliers.
Before removing the nut, it is important to cut a paper mask (a paper circle with a radius slit in it) and apply it to the face to prevent scratching the surface. Once the nut is removed, you can pull off the movement.
When selecting a replacement movement, it is crucial to measure the old movement to determine the size you need, especially the length of the hand shaft. The hand shaft should protrude far enough through the clock face to be tightened securely with a hex nut. Take into account the thickness of the clock face and ensure the new movement's hand shaft length is compatible with the clock face and the original hands, if you plan to reuse them.
Some movements come with hands, which may be a good option if you don't mind changing the style of the hands. However, if you want to keep the original hands or get something very close, it is recommended to buy the movement and hands together, as fitting old hands to new movements can be challenging.
Electricity Cut-Off: How and Why Power Companies Do It
You may want to see also
Explore related products
Replacing the motor
To replace the motor of an old electric clock, you'll need to disassemble the clock carefully and then install a new, compatible motor. Here's a step-by-step guide to help you through the process:
Begin by unplugging the clock from any power source to ensure it is safe to work on. Place the clock face down on a soft surface to protect the glass and prevent scratches. Using a screwdriver, gently remove the back cover of the clock. Take note of how the cover is attached, as you will need to reassemble it later. Once inside, locate the movement, which is the clock's mechanism, and carefully detach it from the case. The movement is usually held in place by screws or clips, so take your time to avoid damaging any parts. With the movement removed, you will have better access to the motor.
The motor is typically connected to the movement via a small coupling or gear train. Gently disconnect the motor from this assembly, noting how the gears mesh together for proper reassembly. Some motors may also have a small clip or screw holding them in place, so ensure you release this before attempting to lift the motor out. With the old motor removed, take it to a hobby shop or an online retailer to find an exact replacement. It is important to get a compatible motor to ensure the clock functions correctly.
Install the new motor by reversing the steps you took to remove the old one. Ensure that the gears are aligned correctly and that the motor is securely attached to the movement. Reattach the movement to the clock case, being careful not to overtighten any screws. Finally, replace the back cover, plug the clock back in, and test it to ensure it is working correctly. With the new motor installed, your clock should be running smoothly again.
Remember to be gentle and patient throughout the process, as these clocks can be delicate, and the mechanisms are often intricate. If you're unsure about any steps, it's always a good idea to consult a clock repair specialist or seek guidance from online forums dedicated to clock repair and restoration.
Bark Collars: Electric Shock Safety for Dogs
You may want to see also
Explore related products
Adjusting the alarm mechanism
Firstly, it is crucial to understand the basic functioning of an electric clock's alarm mechanism. Electric clocks rely on the consistent 60-cycle-per-second alternations of household current (AC) to keep accurate time. Inside the clock, a synchronous motor drives a gear train, which in turn moves the clock's hands. Over time, the lubricant used on the gears can harden, leading to issues with the alarm function.
To adjust the alarm mechanism, begin by unplugging the clock from the electrical outlet to ensure your safety. Then, carefully remove the face cover of the clock with a knife blade. This will expose the internal components, including the gears and the motor. Locate the alarm lever and gently pull it out. You may need to use a screwdriver to gently pry it loose if it is stuck.
With the alarm lever pulled out, you can now adjust the time at which the alarm sounds. Rotate the clock hands manually until they reach the desired time for the alarm to go off. This step ensures that the alarm function is correctly synchronised with the clock movement.
Once the time setting is adjusted, you can access the alarm mechanism itself. Spray the mechanism with an electrical contact cleaner to remove any dirt or residue that could interfere with its function. Use a precision oiler to lubricate any moving parts within the alarm mechanism, ensuring smooth operation.
Finally, locate the vibrator arm, which is responsible for triggering the alarm sound. Carefully bend the vibrator arm to adjust the gap between the arm and the frame as needed. This step ensures that the alarm will activate at the correct time and with the appropriate intensity.
By following these steps, you can effectively adjust the alarm mechanism of your old electric clock, ensuring that it functions accurately and reliably. Remember to work carefully and methodically, as electric clocks contain delicate components that require precise adjustments.
Solving Electrical Ground Loop Issues: DIY Guide
You may want to see also
Frequently asked questions
First, check if the clock is making any unusual noises. In electric clocks, loud noises tend to indicate that the motor is either worn out or its lubricants have hardened. If the clock is noisy, also check for loose parts or a dry shaft. If the hands work loose, use pliers to squeeze them tighter to the central shaft.
A good set of jeweller's screwdrivers, a regular set of small screwdrivers, a good pair of needle-nose pliers, and a precision oiler are all useful tools to have when fixing an old electric clock.
If your clock is too damaged to repair, you can replace the mechanism with an inexpensive digital clock mechanism. Alternatively, if the case is interesting, you can remove the old movement and replace it with a quartz movement.
