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Armstrong Dampers
Posted: Tue Aug 07, 2018 7:17 pm
by Sleeper
Dear All
Before I re-fit my dampers I'd like to get a better understanding of them....I know there are two pistons immersed in oil and each piston has a spring loaded valve ? , also a valve between the two .
Has anyone a good diagram of the workings , or even photos of the stripped units ?
Many thanks
John
Re: Armstrong Dampers
Posted: Tue Aug 07, 2018 10:45 pm
by irmscher
You will find some good ones on Google
Re: Armstrong Dampers
Posted: Wed Aug 08, 2018 6:36 am
by Sleeper
Thanks
Yes, have found some,just need to know how the valves on top of the pistons function now..
- damper pistons.JPG (52.72 KiB) Viewed 1904 times
John
Re: Armstrong Dampers
Posted: Wed Aug 08, 2018 1:01 pm
by Sleeper
Well,being a long standing Blue Peter viewer , just couldn't wait , so , out came the hacksaw....
- 2017_1110demperinternals0005.JPG (198.84 KiB) Viewed 1873 times
- 2017_1110demperinternals0003.JPG (200.37 KiB) Viewed 1873 times
- 2017_1110demperinternals0002.JPG (207.1 KiB) Viewed 1873 times
Note the two different pistons,one ( bump) with a seal and the other ( rebound ) without , in the next post.
John
Re: Armstrong Dampers
Posted: Wed Aug 08, 2018 1:04 pm
by Sleeper
last photo
- 2017_1110demperinternals0008.JPG (370.68 KiB) Viewed 1873 times
P.S 2 bleed holes removed shown in black from the bottom of the cylinders to the valve
Starting to understand it now...
I think the bump and rebound springs are labelled the wrong way round...
John
Re: Armstrong Dampers
Posted: Wed Aug 08, 2018 2:19 pm
by geoberni
Was that therapeutic for you?
You really are impatient to be spending the morning cutting one open when you only asked the question last night.
Nice job though, hopefully they'll prove useful to someone else too.
Re: Armstrong Dampers
Posted: Wed Aug 08, 2018 2:35 pm
by Sleeper
Yes, I like to get the job done....I am not long in this world.
There are on the crowns of the pistons ball valves held in place by fine coil springs , one assumes the pistons are only functional on the downwards stroke....
John
More to come as I get my head around them...
Re: Armstrong Dampers
Posted: Sat Aug 11, 2018 9:26 am
by Trickydicky
Re: Armstrong Dampers
Posted: Sat Aug 11, 2018 12:42 pm
by Sleeper
Richard
Many thanks , wonder why didn't I come across it during my searches ??
John
Re: Armstrong Dampers
Posted: Sat Aug 11, 2018 7:27 pm
by Trickydicky
Here is my version of replacing the seal, very loosely based on Declans method.
viewtopic.php?f=4&t=53062&hilit=Home+damper+repair
Re: Armstrong Dampers
Posted: Sat Aug 11, 2018 8:36 pm
by Sleeper
Richard
Thank you ,yours I managed to see before hacking mine apart , just to see the "workings" , when they start to leak I will try pressing the shafts out and re-sealing them...
Thanks to all.
John