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How to Install Suspension Springs
Clock Suspension Spring Installation
The following is a description of a clock suspension spring installation. There are two ways that the clock suspension spring can be held into the suspension post. One way is to use a thumb, or set screw. When ready, just remove the screw and the suspension spring will fall out of its slot. Another way is to use a tapered pin. This is a pin that is skinny on one end and wide on the other.
Push the skinny end through the pre-drilled hole in the suspension post. Then push it through the hole in the suspension spring all the way to the other side of the post. Similarly, remove it using needle nose pliers. Twist and yank it out from the wide side. Please note, some set screws may be too wide for the suspension top hole. In this case, use a tapered pin to secure the suspension spring instead of the screw.
Connect the leader
Hook the leader on the suspension spring prior to install. The intent is to have the suspension spring spring hooked and the leader engaged with the crutch. At this point the suspension spring can be lifted into position as inserting the set screw. Note that the suspension spring is lifted with the leader hanging on it while the leader is engaged with the crutch as one unit.
What is next?
Hook the leader on the suspension spring prior to install. The intent is to have the suspension spring spring hooked and the leader engaged with the crutch. At this point the suspension spring can be lifted into position as inserting the set screw. Note that the suspension spring is lifted with the leader hanging on it while the leader is engaged with the crutch as one unit.
Hello, I have a tempus fugit Pearl grandfather clock 451-050H 114cm what size replacement suspension spring would I need?
Please order suspension spring A2 if you have a pendulum bob less then 8.5 inches wide, this is the round disk at the bottom of the pendulum
Please order suspension spring A3 if you have a pendulum bob is 8.5 inches wide or larger, from this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Hello, I have a tempus fugit movement in an old Montgomery ward grandfather clock model CCM 9090A. The suspension spring is damaged and I need a replacement. In fact I’d like to get a few of them. It measures approx .725” xoxo.31” xoxo.033” thick. The pin diameter is .038” and the hole in the other end is .05”. Can you help me?
What are the numbers off of the back plate of the clock movement itself? If it is hard to get to, usually you can stick a cell phone up behind the movement and get a picture of the numbers. Or through the side access panel if there is one.
Not off the paper work, not off the wooden case, but the movement stamp itself
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Should the suspension spring be loose hanging on a tapered pin or tight fit?
Thank you James, I reamed the suspension hole until iwas free, as the tpered pin was too large.
W hilst I amin touch What determines the width of the swing? Ihave a 4 glass french clock with a mercury twin pendulum. I feel since Iput a new suspension spring the swing is less than it used to be? Similar with Vienna regulator twin weight wall clock.
From here, not sure. How about sending in the movement alone for restoration ?
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Should have freedom to move some. taper pin tight, spring loose
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Hello….I have an old marble mantle clock. It was running just fine for a very long time. Recently it stopped and I restarted it a few times before I started investigating. It looks like the pendulum wobbles and that seems to take up too much energy causing it to stop swinging. I looked and the pendulum seem to do a figure 8 rather than a smooth side to side motion. Wondering what this could be…a worn out suspension spring?
It can mean many things really. Lack of power up the gear train from wear most likely. The suspension is either broke or is not, it does not wear out
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Help! I need a suspension spring for an Ansonia GrandDAUGHTER clock. I have no idea what I need. Mine seems to be about 1.6 long , .8 cm wide and about .2 cm thick can you help advise?
What are the numbers off of the back plate of the clock movement itself? If it is hard to get to, usually you can stick a cell phone up behind the movement and get a picture of the numbers. Or through the side access panel if there is one.
Not off the paper work, not off the wooden case, but the movement stamp itself
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Not sure the first pic sent. Lets try again
Suspension A2 this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Sorry – it is actually 141-040K/34cm and not 43cm.
Please order suspension spring A2
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Hello, I have Hermle 141-040K/43cm that has the suspension spring broken. Could you please advise to what part should I order as a replacement for the broken one. Thank you.
Hello – I am hoping you can help me. I am looking for a pendulum spring for my German made grandmother clock. It is plain steel with a hole at one end and a double through pin on the other. I hope this is enough information for you. If you need I can send you a photograph. Thank you.
Please order suspension spring A2 if you have a pendulum bob less then 8.5 inches wide, this is the round disk at the bottom of the pendulum
Please order suspension spring A3 if you have a pendulum bob is 8.5 inches wide or larger, from this link
https://www.clockworks.com/product/mechanical-clock-suspension-spring
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
I have a Kundo electromagnetic battery operated dome mantel clock and the suspension spring is broken. I have only two pieces left any idea of what I would need or could get from you?
Do not have the parts for those unfortunately
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
I just purchased 2 A-2 suspension springs from you for my grandmother clock, It seems the pendulum leader will not fit on to the spring. Any suggestions on how to get it on.
Hook the suspension on the leader, then bring both up and hook the suspension on its post
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have a colonial grandfather clock and I will attach pictures of the model number and other identifiers and I need to know what suspension spring I need to purchase. Mine is missing one chain and the weights and the suspension spring. I need to replace all of the parts at this point and I am not sure which ones I need to purchase. The number on the plate is (Colonial of Zeeland 7720618 Registered serial number) and the name on the faceplate of the movement is ( Colonial).
What are the numbers off of the back plate of the clock movement itself? If it is hard to get to, usually you can stick a cell phone up behind the movement and get a picture of the numbers. Or through the side access panel if there is one.
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Who do I text pictures to – of needed suspension
Spring ?
Right in this interface
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Can the Hermle suspension spring be changed without removing the movement?
Yes absolutely
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
So thats what its called, nice.