Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 02-09-2017, 20:50   #1
Senior Cruiser
 
Dave_S's Avatar

Cruisers Forum Supporter

Join Date: Jun 2016
Location: Brisbane Australia
Boat: Schionning Waterline 1480
Posts: 1,362
Help needed fitting gland seals on Seastar cylinder

I have gland seals as shown. Does the harder plastic seal (LH top and btm) go inside or outside the O ring?

I have 2x Seastar BA135-7ATM .....HC5313-3 cylinders. Both exactly the same model and part no. But both completely different.

One has a cheap form of seal and (wiper?) in the form of an O ring and a plastic washer which is basically a flat washer scooped out on one face to seal on the O ring.

One end had the plastic washer to the outside and the other end to the inside. ?

I can not find anything in the kit instructions or on the internet that shows me which way they go, any hydraulic people out there who could help thanks.....
Attached Thumbnails
Click image for larger version

Name:	IMG_20170903_133007_1CS.jpg
Views:	78
Size:	356.7 KB
ID:	155254  
__________________
Regards
Dave
Dave_S is offline   Reply With Quote
Old 02-09-2017, 20:54   #2
Senior Cruiser
 
Dave_S's Avatar

Cruisers Forum Supporter

Join Date: Jun 2016
Location: Brisbane Australia
Boat: Schionning Waterline 1480
Posts: 1,362
Re: Help needed fitting gland seals on Seastar cylinder

Had a better look at the plastic washer and it fits too loosely to be a wiper. So I'm not sure what it is for.
__________________
Regards
Dave
Dave_S is offline   Reply With Quote
Old 03-09-2017, 00:14   #3
Registered User

Join Date: Jun 2017
Location: Subic Bay Philippines
Posts: 539
Re: Help needed fitting gland seals on Seastar cylinder

Generally the wiper is on the outside and O Ring the inner,

but here's a very good site that "needs searching"but has a lot of diagrams and instructions if you haven't used prior:SeaStar Solutions

Cheers Steve
Captsteve53 is offline   Reply With Quote
Old 03-09-2017, 00:44   #4
Senior Cruiser
 
Dave_S's Avatar

Cruisers Forum Supporter

Join Date: Jun 2016
Location: Brisbane Australia
Boat: Schionning Waterline 1480
Posts: 1,362
Re: Help needed fitting gland seals on Seastar cylinder

Quote:
Originally Posted by Captsteve53 View Post
Generally the wiper is on the outside and O Ring the inner,

but here's a very good site that "needs searching"but has a lot of diagrams and instructions if you haven't used prior:SeaStar Solutions
Cheers Steve
Thanks Steve, I opened every file it just passes over that step it does show a similar setup but used differently.
Attached Thumbnails
Click image for larger version

Name:	Screenshot_2017-09-03-17-36-25.png
Views:	55
Size:	151.1 KB
ID:	155257   Click image for larger version

Name:	Screenshot_2017-09-03-17-36-39.png
Views:	58
Size:	187.1 KB
ID:	155258  

__________________
Regards
Dave
Dave_S is offline   Reply With Quote
Old 03-09-2017, 06:46   #5
Registered User

Join Date: Jun 2017
Location: Subic Bay Philippines
Posts: 539
Re: Help needed fitting gland seals on Seastar cylinder

Dave,
There's a couple of not bad U TUBE vid's on pulling these apart and rebuilding if you have not viewed, here's one :

But a few more on the same page, may give you some idea's if nothing else, the above one is fairly thorough

Cheers Steve
Captsteve53 is offline   Reply With Quote
Old 03-09-2017, 11:51   #6
Senior Cruiser
 
Dave_S's Avatar

Cruisers Forum Supporter

Join Date: Jun 2016
Location: Brisbane Australia
Boat: Schionning Waterline 1480
Posts: 1,362
Re: Help needed fitting gland seals on Seastar cylinder

For some reason they all skip over the install of this particular seal.

A few pages in from your link (thanks) there was a video on rebuilding Yamaha tilt cylinders where he didn't show how to fit them but did refer to them as "back up" rings. A search on back up rings took me to an SKF site where it explained they hold the O ring such that part of the O ring can't be pulled into the clearance gap between the shaft and housing causing accelerated wear.

ANSWER..... They fit on the outside, away from the pressure.

Picture attached.

Thanks for your help.
Attached Thumbnails
Click image for larger version

Name:	Screenshot_2017-09-04-04-35-30.png
Views:	58
Size:	160.7 KB
ID:	155303  
__________________
Regards
Dave
Dave_S is offline   Reply With Quote
Old 03-09-2017, 23:07   #7
Registered User

Join Date: Nov 2010
Location: SoutEastAsia
Boat: Reve de Mer
Posts: 9
Re: Help needed fitting gland seals on Seastar cylinder

Yes, the "washer" is actually a back-up ring and shall avoid the protrution of the O-ring into the gap , away from the pressure.

Logic -- isn't it?
ptrd55 is offline   Reply With Quote
Old 05-09-2017, 14:32   #8
Senior Cruiser
 
Dave_S's Avatar

Cruisers Forum Supporter

Join Date: Jun 2016
Location: Brisbane Australia
Boat: Schionning Waterline 1480
Posts: 1,362
Re: Help needed fitting gland seals on Seastar cylinder

Quote:
Originally Posted by ptrd55 View Post
Yes, the "washer" is actually a back-up ring and shall avoid the protrution of the O-ring into the gap , away from the pressure.

Logic -- isn't it?
Why do you think it is necessary if the shaft to housing clearance is 0.004" and the O ring is 5/32".
__________________
Regards
Dave
Dave_S is offline   Reply With Quote
Reply

Tags
seals

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
SeaStar PA1200 Power Assist Pump Rebuild - How To... in the making. (& Questions To!) PetePetePete Construction, Maintenance & Refit 2 22-11-2019 18:36
Seastar helm chrisr Construction, Maintenance & Refit 2 06-12-2016 12:10
shaft seals, lip seals,..oh my sailorboy1 Propellers & Drive Systems 50 04-03-2013 19:50
EPDM Lewmar port seals (replacement) for leaking seals Panamajames Construction, Maintenance & Refit 3 05-03-2012 13:47
For Sale: NEW! SeaStar Tilt Hydraulic Helm Pump mweich Classifieds Archive 0 22-01-2012 22:05

Advertise Here


All times are GMT -7. The time now is 02:16.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.