Catalina 34

General Activities => Main Message Board => Topic started by: Switchback on June 13, 2018, 09:11:55 AM

Title: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Switchback on June 13, 2018, 09:11:55 AM
Ahoy!

My Bomar hatch in the salon is leaking! I have determined the gasket must be replaced and at some point the lens needs re-bedding (I'll focus on this later). I can not determine what model hatch this is. It is the original Bomar hatch from 1986 that is mounted on the cabin top above the settee. Is this extruded aluminum or cast aluminum? I am trying to figure out which gasket kit I need to buy. Any help would be very much appreciated. Thanks in advance!

-Mike
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Jon W on June 13, 2018, 10:55:43 AM
My Bomar V-berth and salon hatches were also leaking. I used Catalina Direct part number Z2245 for the V-berth trapezoidal hatch. The salon hatch has the same gasket shape as the V-berth hatch. I called Catalina Direct and they gave me Z2243 as the gasket part number used in Z2245 and it fit fine. Part number Z2243 is not on their website (or wasn't at the time) so you ask them how to order it.
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Noah on June 13, 2018, 11:58:49 AM
Does anyone know what year (hull number) they changed hatch and ports models? My 1990 (#1014) has Bomar opening ports aft, Lewmar opening ports in salon and V-berth, Bomar extruded hatch in head, Bomar extruded hatch in saloon, and Lewmar trapezoidal rollstop hatch in V-berth.
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Switchback on June 13, 2018, 12:26:23 PM
Thanks Jon W!  :D
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Ron Hill on June 13, 2018, 02:02:01 PM
Noah : You are asking n nearly impossible question to answer for Hull #s.

Catalina changed the hatches like Vberth was solid in 1986, in 1987 to a Bomar (adjusting arm) and then in 1988 to a Lewmar (Rollstop).  They changed the side opening portlights from Beckson in 1986 to Lewmar in late 1987 & 88.  Salon overhead hatch was Bomar (adjusting arm) in 1986 and then Lewmar in 1992/3 ?

Some thoughts
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Noah on June 13, 2018, 02:09:26 PM
THX, Ron!
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: sailr4 on June 14, 2018, 06:53:12 AM
Mike - When my salon hatch was leaking, I looked for a new gasket. But I decided to go ahead and re-bed the hatch.  It was actually really straight forward and only took an hour or so.  Use Butyl tape. No more leaks.  Never needed a new gasket.

Rob
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Switchback on June 14, 2018, 07:00:43 AM
Mike - When my salon hatch was leaking, I looked for a new gasket. But I decided to go ahead and re-bed the hatch.  It was actually really straight forward and only took an hour or so.  Use Butyl tape. No more leaks.  Never needed a new gasket.

Rob

Rob,

No kidding? That sounds like a breeze! I've temporarily closed the hatch down on top of a layer of butyl tape and dogged it tight. Seems to be working but definitely not a long term fix! I will look into re-bedding the hatch. Good to know it's not a nightmare of a job.
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Noah on June 14, 2018, 08:20:46 AM
Define “nightmare”. A lot depends on what it was bedded with previously as to how hard it is to remove. After removing the screws, a good way to break the sealant bond between the hatch and deck, is to use a multitool with scraper blade attachment inserted under the hatch flange.
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Stu Jackson on June 14, 2018, 09:12:00 AM
Mike,

http://c34.org/bomar-hatch-re-bedding/ for my 1986 boat.  Includes the model #.

Ron Hill did another in Feb 2012 for an '88 boat.

A couple of years later it started dripping again.  I used Captain Tolley's Creeping Crack Cure on the port forward edge of the lens inside the moving top, stopped right away, hasn't returned.
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Switchback on June 14, 2018, 10:13:28 AM
Mike,

http://c34.org/bomar-hatch-re-bedding/ for my 1986 boat.  Includes the model #.

Ron Hill did another in Feb 2012 for an '88 boat.

A couple of years later it started dripping again.  I used Captain Tolley's Creeping Crack Cure on the port forward edge of the lens inside the moving top, stopped right away, hasn't returned.

Thank you Stu, you're very helpful!
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Ron Hill on June 14, 2018, 02:42:08 PM
Guys : If you want to remove and rebed a hatch, remove the screws and then use a heat gun to soften the old caulk.  Then pry up with a stiff putty knife.

For those with a MK1, if I had to do it again I'd replace with a Lewmar center hatch. Reason - the adjusting system is like the Bomar hatch in the head.  It's friction and you eliminate that adjustment arm that is stupidly secured on the top - into the plastic lens!!!!  Research show the corner radiuses are nearly identical!

A few thoughts
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: anaisdog on September 06, 2018, 08:46:13 AM
Stu, how do i see that write up?  it says it's password protected but i'm logged into c34 site, to post this?  thanks

and sailr4, you replaced the grey gasket material with butyl?  sounds easy!
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Stu Jackson on September 06, 2018, 09:46:36 AM
Stu, how do i see that write up?  it says it's password protected but i'm logged into c34 site, to post this? >>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>

If you are a C34IA member you were given the pw when you joined.

This explains the differences:

http://c34.org/bbs/index.php/topic,4782.0.html
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: anaisdog on September 06, 2018, 10:06:03 AM
got it, sorry.  but what was your hatch rebed with, from the grey gasket?
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Stu Jackson on September 06, 2018, 10:22:53 AM
butyl tape --- pretty sure it was included in the text!  :D
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: anaisdog on September 06, 2018, 10:25:34 AM
i just wanted to make certain you meant the glass that goes up, not the frame of the entire hatch
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Stu Jackson on September 06, 2018, 10:28:20 AM
The entire article was about rebedding the entire hatch, not just the glazing in the frame.  Weren't the pictures clear enough?
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: anaisdog on September 06, 2018, 10:29:59 AM
i just looked at it, sorry.  any idea on replacing the glazing on the frame?  that's where mine is leaking, that grey foam
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Stu Jackson on September 06, 2018, 10:35:40 AM
i just looked at it, sorry.  any idea on replacing the glazing on the frame?  that's where mine is leaking, that grey foam

From my reply #9 on page 1 of this very topic:


A couple of years later it started dripping again.  I used Captain Tolley's Creeping Crack Cure on the port forward edge of the lens inside the moving top, stopped right away, hasn't returned.

You might try that first.

It also includes a suggestion to read Ron's other writeup, but that's a complete rebed job, too.

IIRC, there have been other posts on just rebedding the glazing.
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: Noah on September 06, 2018, 10:47:43 AM
I would recommend Dow 795 sealant to seat/bed the hatch lens.
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: anaisdog on September 06, 2018, 11:00:05 AM
if the tube is still good, i have some of that. 
Title: Re: 1986 Catalina 34' Main Cabin Bomar Hatch
Post by: DaveBMusik on September 10, 2018, 06:23:15 PM
I would recommend Dow 795 sealant to seat/bed the hatch lens.

Ditto, I bought a piece of new plastic from a local glass shop and used 795 after refurbishing the frame like Stu. I used Butyl to bed the frame and bought a length of seal from https://hatchmasters.com/hatch-repair/