How to replace clock mechanism

how to replace clock mechanism

Installing Clock Movement

Try to choose a time each week that is easily remembered, perhaps every Sunday evening. the weights within the clock case are what power the clock movement. The center weight is for powering the time keeping gear train with in the movement, the left weight powers the hour strike and the right hand weight (heavy weight) powers the 4/4 chimes. Choose clock hands based on the size of your clock dial you are working with. In Figure 3 this clock is a 24" clock and the designer chose 10" Clock Hands - generally, you want your clock hands to sit somewhere between the inside and outside edge of your numbers or numerals. So a little less than half the diameter of your clock face is standard.

Clock movements are available in a wide range of sizes. There are a few important measurements you will need to have when ordering a clock movement, to ensure you get the right one to fit your application. Note: Some push on style clock movements will how to bring a woman to orgasim have a threaded shaft.

Total Shaft Length. When using a glass front on your clock keep in mind the total shaft length total post length. The post mounting hole of your clock dial or mounting material needs to have a large enough diameter to fit the shaft of the clock movement mschanism it. The easiest and most accurate way to measure the shaft length on a clock movement is to use the depth gauge on a digital caliper. A ruler can also be used to measure the shaft length, if you do use a ruler to measure the shaft size make sure the ruler starts at 0, many rulers have their zero point a bit away from the end of the ruler.

This will give you the movements total shaft length, which will be needed when ordering a replacement clock movement. If you are reusing your existing clock handsyou should confirm that the new movements shaft for both the hour and minute hand are the same size and shape as your existing hands mounting diameter.

For an overview of quartz clock movement parts and assembly see our article Quartz Clock Parts and Assembly Diagram. Remember Me. Lost your password? Total Replacf Length When using a glass front on your clock keep geplace mind the total shaft length total post length.

Shaft Diameter The post mounting hole of your clock dial or mounting material needs to have a large enough diameter to fit the shaft of the clock movement through it. Measuring the Shaft When Replacing a Broken Quartz Clock Movement The easiest and most accurate way to measure the shaft length on a clock movement is to use the depth gauge what is thermal expansion valve a digital caliper.

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Jan 06,  · If the Clock Stilll Won't Start, Replace the Mechanism. It turned out that the electronics of my clock in the photos above was faulty. You can buy a replacement movement on eBay or Amazon. These are somewhat non standard, so you need to check that the hands are the correct size and will suit the style of your clock, or alternatively if the are. I saw your answer about repairing a small world rhythm clock by Cuorum. You said to replace the quarz movement. Our clock is not keeping time correctly. Everything else works. I took the back off, removed two screws from the quartz movement (black box). I thought the box would then be easy to remove. I pulled it some but it did not come loose. This clock mechanism was used to replace a failing mechanism. The old mech gained 5 minutes or more every month. After having this one for a month, it has kept perfect time and is rkslogadoboj.coms: K.

Congratulations on your purchase of this quality clock movement. This precision instrument, when cared for properly, will deliver years of dependable service. Inspect the shipping carton for signs of damage that could have occurred in shipping. Carefully remove the movement and accessories. Should you find any damaged or missing parts, please contact us immediately for a prompt replacement. We recommend that you use a old shirt or rag when handling the lead weight fillings.

Make sure if you touch and lead item that you wash your hands thoroughly before eating. Lead however, cannot be absorbed through the skin. Also, use gloves when handling the movement and any other brass components.

The Natural oils on your skin can, over time, tarnish these items. If you happen to touch any of the brass components, simply wipe the surface with a clean, dry cloth. It is always best to handle the movement by the corner pillars rather than the movements front or back plates.

Very few tools are needed to install the clock movement into your clock case. However, you will want to have the following items handy: A. Slotted screwdriver with a fine tip, you will most likely need one that is longer and one that is shorter. A level C. Rags D. Tape measure. You will want to avoid placing the clock cabinet in direct sunlight as ultraviolet rays will tend to tighten or bleach the cabinet.

It is also recommended that the clock not be placed near heating or air conditioning vents. Dramatic temperature changes will effect time keeping regulation. It is strongly recommended that the clock not be placed near a fireplace. If placed near a fireplace or vent, the movement is subject to a higher concentration of airborne particles. Chime volume will be effected by the placement of the clock case. A grandfather clock placed on a wood floor will be louder than on placed on a carpeted floor, for example.

Avoid placing the clock in high traffic areas. Especially if children are present. If children are present, it is strongly recommended that the top of the clock case be permanently attached to the wall. This will eliminate the possibility of the clock being tipped over.

The silence lever is located on the right hand side of the movement as you face the handshaft. The silence lever extension is easily installed onto the silence lever by loosening the set screw and sliding it into position. After the extension is in place and the dial has been installed, the set screw can be tightened securely.

In most instances, you will find a slot in the dial where this extension will ultimately protrude. It can then be moved up to silence the chimes or down to change melodies. If your dial is not equipped with a slot for the extension, simply mount the silence lever extension so that the end of the lever points toward the back of the clock case.

If your clock does not have a dial that has a moving moon, skip to assembly step 8. The moon gear is used to automatically change the position of the moving moon disc on the dial. If replacing a movement then get the old moon gear off of the old movement by loosening the set screws. In the late 17th century, the moon dial was added to long case clocks so people could plan ahead for when the moon was full so travel at night was not so hazardous.

It also aided farmers in the proper timing of planting and harvesting their crops. Observing the front of the dial, note the dials arch or commonly called "chapter ring". These numerals indicate the days of the lunar month. The moving moon disc indicates the day of the lunar month in relation to the phase of the moon. The position of the disc can be adjusted by applying gentle pressure with your fingertips to the face of the moon disc.

Find the day of the moon's position by either observing the moon, a calendar or a newspaper. Due to the gearing of the dial, there are two complete lunar cycles for every revolution of the moving moon disc. Take the movement and insert the hand shaft into the center hole in the dial. As you do this, note that the for dial mounting posts go into the four pre drilled holes in the movements front plate.

Note also that the gearing on the back of the dial meshes properly with the moon disc drive gear installed in assembly step 5. If they do not line up correctly, reposition the moon gear. After the posts are installed into the movements front plate and the gears mesh properly, Slide the dial post locking levers into position.

Do this to all four posts. The dial is now securely attached to the movement. Next, make sure that the silence lever extension is protruding through the slot in the dials face.

Tighten the extensions screw securely. Remove the orange cable retainers that cover each cable drum assembly.

This is very important. If the retainers are not removed, the clock will not operate correctly. Do not attempt to remove the clear plastic retainers as this will damage the movement. Insert the movement into the opening within the clock case. Fasten the movement to its mounting board making sure that the pendulum leader does not come in contact with the mounting board and can freely move back and forth.

Make sure that the dial is centered in the dial opening. Secure the movement into position using the movement mounting plates and movement mounting screws. Tighten the mounting screws securely, not too tight but tight enough so the movement does not move around during winding. There are two different methods for mounting the chime rod assembly to the clock case.

The first method involves attaching the chime rod assembly to the case back. A thicker case back allows the vibration produced by the chime rods to reverberate better throughout the case and ultimately into the surrounding area. You may wish to place shims or a block of wood behind behind the cast iron portion of the chime rod assembly.

This will aid in achieving the proper alignment between the chime rods and the movements hammers. The second method involves mounting the chime rod assembly to a mounting board, then attaching the mounting board to the sides of the case with small mounting blocks.

When mounting the chime rod assembly into the clock case, it is recommended that the chime rod assembly be positioned so that the movements hammers strike the rods 1" from the bottom of the chime block. The pendulum gets attached to the leader, the leader gets attached to the suspension spring.

Lets say that another way. The wig waggy thing on the post that sticks out the back of the movement is called a suspension spring. The leader attaches to this suspension spring, a leader is a flat piece of brass usually that is about inches long. This leader hooks to the suspension spring while there is a hole in the middle of it so the other wig waggy thing coming out the back of the middle of the movement can go into it.

This part that comes out the back of the movement is called a verge and it moves back and forth when the clock runs, making the pendulum go back and forth. Next you put on the pendulum by hooking it up to the leader. So there you have it, suspension spring, leader and pendulum all swinging together. First, hook the loose end of each cable into the slot provided in the underside of the clock movement if cable driven..

If the cable ends are not seated properly in each slot, the entire weight assembly can fall to the floor and damage the case. Hang the weights. Again, remember to wear gloves or use a rag when hanging the weights. As you face the movement, the heaviest weight should be installed on the right hand cable. The center weight is powering the time keeping gear train, and left hand weight is for powering the hour strike gear train. Note the position of the movements hammer assemblies in relation to the chime rod assemblies chime rods.

You will note that each chime hammer corresponds to one chime rod. These hammers should line up with each corresponding chime rod. The hammers can be repositioned by bending the hammer wires to achieve the correct position.

Place the minute hand on the movements hand shaft in any position without the hand nut and turn the hand slowly clockwise until you hear a click and the chimes start to play. The chimes may play immediately or it may take one complete revolution of the minute hand before they are activated.

The notes you hear should be crisp and clear. If not, make small adjustments to the hammer wires until the desired sound is achieved. Westminster melody plays four notes on the quarter hour, eight notes on the half hour, twelve notes on the three quarter hour, sixteen notes on the hour, then strikes the hour.

Mount the minute hand on the movements hand shaft in any position. Rotate the hand clockwise until a click is heard and the chimes start to play. Note the number of notes that movement plays. Continue rotating the minute hand in this manner until the clock chimes sixteen notes then strikes counts the hour.

Note the number of times the clock strikes the hour.

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