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Subject Topic: Coupling "banging" Post Reply Post New Topic
Personracingsnake
21/8/2011 at 8:56pm
 Location: Stroud
 Outfit: W202 1998 C240. '87 CI Cosmos Voyager View racingsnake's Profile View Profile   Reply to racingsnake Reply   Quote racingsnake Quote  
Joined: 03/9/2003

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Not a dirty film!

I have a 1987 CI Cosmos, we only picked it up in May and now we have done a few trips I need some advice.

When you slow for a junction or roundabout, I understand the nose shifts back as the caravan "catches up" and applies the brakes. However, I'm sure you should not get a jolt and bang as the coupling is extended when you get back on the gas. Right? So, is my energy store knackered? It is a Knott coupling, and I may need to adjust it but the hitch head seems quite easy to shove back by hand (I'm not a 20 stone rugby player) as I can easily push it in by heaving on it.

Help!

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Beer makes you feel the way you should feel without beer.


Personbrianjose
21/8/2011 at 9:05pm
 Location: Coventry
 Outfit: Coachman Amara Suzuki GV View brianjose's Profile View Profile   Reply to brianjose Reply   Quote brianjose Quote  
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You have a hydraulic damper on your coupling which prevents this happening.  It sounds as though yours is us and needs replacing.  A simple job.

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there are 10 types of people in this world, those who understand binary and those who don't.


Personmillermicm
21/8/2011 at 9:10pm
 Location: west country
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As above. Replace the damper. Its like a shock absorber. Yours isn't damping or absorbing shock.

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Steve


Personracingsnake
21/8/2011 at 9:11pm
 Location: Stroud
 Outfit: W202 1998 C240. '87 CI Cosmos Voyager View racingsnake's Profile View Profile   Reply to racingsnake Reply   Quote racingsnake Quote  
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Exactly what I was thinking. They call it the energy store?

http://www.knottuk.com/products/coupling-spares.html

Thank you Google. Which part do I need?

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Beer makes you feel the way you should feel without beer.


Personbrianjose
21/8/2011 at 9:44pm
 Location: Coventry
 Outfit: Coachman Amara Suzuki GV View brianjose's Profile View Profile   Reply to brianjose Reply   Quote brianjose Quote  
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The damper is a tube with a rod that goes in and out, and there is an eye with a rubber bush in  at each end with an attachment bolt through it, its the same on all couplings.  Take it off and take it round the local motor factors. You will get one cheaper from them.

 

 



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there are 10 types of people in this world, those who understand binary and those who don't.


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Personarc systems
21/8/2011 at 10:38pm
 Location: None Entered
 Outfit: http: www.arcsystems.biz View arc systems's Profile View Profile   Reply to arc systems Reply   Quote arc systems Quote  
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I'm sure the 'energy store' is not the damper, the store is just a spring connection in the brake rod, the damper fits inside the draw bar tube.


PersonDaver1
23/8/2011 at 9:04am
 Location: None Entered
 Outfit: Abby cambridge View Daver1's Profile View Profile   Reply to Daver1 Reply   Quote Daver1 Quote  
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Have you checked and adj the rear brake I had the same issue,adj the long metal rod were it meets the rear cables

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Dave


Personracingsnake
23/8/2011 at 11:47am
 Location: Stroud
 Outfit: W202 1998 C240. '87 CI Cosmos Voyager View racingsnake's Profile View Profile   Reply to racingsnake Reply   Quote racingsnake Quote  
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Quote: Originally posted by Daver1 on 23/8/2011
Have you checked and adj the rear brake I had the same issue,adj the long metal rod were it meets the rear cables

I'm in the process of doing just that! The original owners manual tells me how to do it, and I'll be doing it this week.


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Beer makes you feel the way you should feel without beer.



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