Cruisers Forum

  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 11-12-2009, 08:37   #1
Registered User
w32honu's Avatar

Join Date: Dec 2009
Location: New Hampshire
Boat: Custom Marples 40 FC
Posts: 498
Images: 2
Stuck with 4200 - Leaking Like a Sieve

I have inherited two port lights that are leaking badly. They are the "Newfound Metals" type port, where the outer flange is seperate from housing. A ring..............

It appears that the ports have been installed with 4200.............and those bad boys are stuck on there good.

I need to remove that outer ring in order to inspect and caulk them properly.

Any ideas as to how to loosen the grip of 4200???

I was considering a bit of heat (carefully applied) vis a vis a torch.....????

Thaks in advance,

Steve and Jules
s/v Honu
w32honu is offline   Reply With Quote
Old 11-12-2009, 08:52   #2
Registered User

Join Date: Jun 2006
Posts: 663
see if you can get some piano wire, guitar string, or seizing wire behind an edge then use the wire like a saw all the way around between cabin side and ring or get a hold of the mfg and find out if they have a solvent like the stuff for 5200. the wire works right now the solvent you have to wait for it to work.
mike d. is offline   Reply With Quote
Old 11-12-2009, 09:26   #3
Registered User

Join Date: Sep 2009
Location: Central Florida
Posts: 21
Another Mike chimes in.

Sometimes slow and steady pressure works better than prying and sawing.

In the attached photo you can see how Iíve positioned a few bar clamps to apply pressure in the direction I want the Lewmar port to move.

Once you have the clamps in place slowly tighten them to increase the pressure. Wait a few minutes before tightening again. You can actually hear the caulk start to separate from the frame. Finally with the last tightening of the clamps the port pops free, undamaged and without pry marks.

The key is to take your time and not crank down on the clamps all at once. Tighten, and walk away for a few minutes.

Iíve used this technique on 4200, 101, Lifecaulk, silicone, and some other unidentified caulks.

Something to think about anyway.

Anti-Bond works on 4200 as well as 5200.

Mike156 is offline   Reply With Quote
Old 13-12-2009, 16:12   #4
Registered User
SabreKai's Avatar

Join Date: Sep 2008
Location: Toronto, Canada on Lake Ontario
Boat: Roberts Offshore 38
Posts: 1,287
Images: 5
I've heard good things about Marine Formula 2000, a US product from Florida. Haven't used it myself but one of our shops up here sells it and a few people in our club have used it to good effect.

SV Sabre Dance, Roberts Offshore 38
SabreKai is offline   Reply With Quote
Old 16-12-2009, 11:08   #5
Registered User

Join Date: Sep 2009
Location: Washington, DC/Vero Beach, FL
Boat: North Pacific Yachts Trawler 42'
Posts: 27
DeBond Corporation

Debond works well on 4200 and 5200, using a chemical reaction to penetrate and break the molecular bond.
Cloud IX is offline   Reply With Quote

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
Entec West EW-4200-D Genset - Opinions ? neelie Electrical: Batteries, Generators & Solar 9 26-02-2020 09:55
FP 4200 genset question bottleinamessage Electrical: Batteries, Generators & Solar 3 01-02-2008 15:47
Leaking Lewmar JusDreaming Construction, Maintenance & Refit 3 10-09-2007 15:01

Advertise Here

All times are GMT -7. The time now is 20:27.

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.