Matronics Email Lists :: View topic - CJ gear Actuator seals

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

CJ gear Actuator seals

Matronics Email Lists Forum Index -> Yak-List

View previous topic :: View next topic

Author Message

pnicholson

Joined: 04 Jun 2011
Posts: 46

Posted: Sat Sep 19, 2015 4:09 am Post subject: CJ gear Actuator seals

Good day,

Does anyone have the size/specifications for the gear actuator o-rings? I am aware that they are "squared" but not sure of the size. Doug S is temporarily out and I am trying to source them. 

Thanks,

Phil

Sent from my iPad

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

woodja51

Joined: 13 May 2015
Posts: 40
Location: MELBOURNE AUSTRALIA

Posted: Wed Oct 21, 2015 11:15 pm Post subject: Re: CJ gear Actuator seals

Hi all, 



I have had an actuator spec' for new NBR seals. I have gotten a quote for a

Complete set from China at around 200USD for each size.



So ( for 22000 o rings !) it works out to be about $600. 



I would go ahead and get a few complete sets , but my issue is that I wonder if each actuator will need a different seal selection as there is info I the overhaul

Manual that implies one must select a size ring that gets a particular dimension ... So the set I order might only work properly on the one actuator I had measured. You are correct that they are square section o rings and the outer sets have .3 X 45 degree chamfers ( probably for ease of installation / prevent rolling) .. I might go ahead with a set to see if they will work on the other U/S actuators I have and if so the overhaul process is easy, but if a " grab" kit is needed to accurately fit each actuator it is probably easier to get them new / from PRC... Doug might be able to step in here for advice... Matt 

CHina southern pilot,...

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

woodja51

Joined: 13 May 2015
Posts: 40
Location: MELBOURNE AUSTRALIA

Posted: Wed Oct 21, 2015 11:15 pm Post subject: Re: CJ gear Actuator seals

Hi all, 



I have had an actuator spec' for new NBR seals. I have gotten a quote for a

Complete set from China at around 200USD for each size.



So ( for 22000 o rings !) it works out to be about $600. 



I would go ahead and get a few complete sets , but my issue is that I wonder if each actuator will need a different seal selection as there is info I the overhaul

Manual that implies one must select a size ring that gets a particular dimension ... So the set I order might only work properly on the one actuator I had measured. You are correct that they are square section o rings and the outer sets have .3 X 45 degree chamfers ( probably for ease of installation / prevent rolling) .. I might go ahead with a set to see if they will work on the other U/S actuators I have and if so the overhaul process is easy, but if a " grab" kit is needed to accurately fit each actuator it is probably easier to get them new / from PRC... Doug might be able to step in here for advice... Matt 

CHina southern pilot,...

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

dsavarese0812(at)bellsout
Guest

Posted: Thu Oct 22, 2015 3:01 am Post subject: CJ gear Actuator seals

Unless you live in Chinaand need to overhaul your actuators there, 

Doug's your guy.  He spends tons of money buying and MAKING parts to 

support our CJ and Yak community.  The least we can do is support him 

and buy from him.  FWIW.

Dennis



A. Dennis Savarese

334-546-8182 (mobile)

www.yak-52.com

Skype - Yakguy1



On 10/22/2015 3:15 AM, woodja51 wrote:

 	  Quote: 	
		   



 Hi all,



 I have had an actuator spec' for new NBR seals. I have gotten a quote for a

 Complete set from China at around 200USD for each size.



 So ( for 22000 o rings !) it works out to be about $600.



 I would go ahead and get a few complete sets , but my issue is that I wonder if each actuator will need a different seal selection as there is info I the overhaul

 Manual that implies one must select a size ring that gets a particular dimension ... So the set I order might only work properly on the one actuator I had measured. You are correct that they are square section o rings and the outer sets have .3 X 45 degree chamfers ( probably for ease of installation / prevent rolling) .. I might go ahead with a set to see if they will work on the other U/S actuators I have and if so the overhaul process is easy, but if a " grab" kit is needed to accurately fit each actuator it is probably easier to get them new / from PRC... Doug might be able to step in here for advice... Matt

 CHina southern pilot,...





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=448174#448174

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

dougsappllc(at)gmail.com
Guest

Posted: Thu Oct 22, 2015 7:58 am Post subject: CJ gear Actuator seals

Matt,I have about that number of seals here, some seem close to fitting but no joy. I can't even start to estimate the number of actuators which I have overhauled with "the correct" 0 rings only to find they still leaked.  We are at this time working with a US firm to try to discover a method of overhauling the actuators with a newer style 0 rings which is currently used in high pressure air systems in mines. 

I too have discovered the need  of different "heights/thickness" of 0 rings for various cylinders depending on wear.  This really threw a wrench into the works with respect to stocking the 0 rings and offering a overhaul kit to my customers.  This problem pretty much precludes the customer from doing the overhaul himself unless the kit contained all possible wear combinations.

Round profile 0 rings do work, but they seem to not work for an extended period of time.

A side note:

We have noted cracks in the actuator rams at the base (aft end), caused, we think by the failure of the mech to properly adjust the overall length.  Rather these cracks will someday cause a ram failure is unknown but they WILL eventually cause the failure of the aft end cap/lug.  Depending on how far you tear it down we are finding that there is much more to the overhaul process than just changing out the 0 rings.  

About your research:

If I can help any please let me know.  If the company is willing to send me a few samples I will be more than happy to give them a try and if they will work I'll stock them.  I have HP air in my shop with capabilities up to 1500PSI.  HP air is necessary to check a overhauled actuator properly as it should be held at least at operating pressure (45 BAR or about 650 psi) for 2-3 hours.  Checking with normal shop air of 100 psi will not give a proper indication

Give me a call if you have any additional thoughts.

Best,

Doug

On Thu, Oct 22, 2015 at 12:15 AM, woodja51 <mwuillemin(at)mac.com (mwuillemin(at)mac.com)> wrote:

[quote]--> Yak-List message posted by: "woodja51" <mwuillemin(at)mac.com (mwuillemin(at)mac.com)>

 

 Hi all,

 

 I have had an actuator spec' for new NBR seals. I have gotten a quote for a

 Complete set from China at around 200USD for each size.

 

 So ( for 22000 o rings !) it works out to be about $600.

 

 I would go ahead and get a few complete sets , but my issue is that I wonder if each actuator will need a different seal selection as there is info I the overhaul

 Manual that implies one must select a size ring that gets a particular dimension ... So the set I order might only work properly on the one actuator I had measured. You are correct that they are square section o rings and the outer sets have .3 X 45 degree chamfers ( probably for ease of installation / prevent rolling) .. I might go ahead with a set to see if they will work on the other U/S actuators I have and if so the overhaul process is easy, but if a " grab" kit is needed to accurately fit each actuator it is probably easier to get them new / from PRC... Doug might be able to step in here for advice... Matt

 CHina southern pilot,...

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=448174#448174

 

 

 

 

 

 

 

 ===========

 List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?Yak-List

 ===========

  FORUMS -

 eferrer" target="_blank">http://forums.matronics.com

 ===========

 b Site -

           -Matt Dralle, List Admin.

 rel="noreferrer" target="_blank">http://www.matronics.com/contribution

 ===========

 

 

 

 [b]

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Yak-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum