Cruisers Forum
 


Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 30-07-2021, 10:12   #1
Registered User

Join Date: Dec 2015
Location: Minnesota
Boat: Vaitses/Herreshoff Meadow Lark 37'
Posts: 833
How do I open this inspection port?

My boat has diesel tanks with inspection ports that clearly take some sort of tool to open - but I don't know the name of the tool, so I don't know what to ask for, when I go looking to buy, rent, or borrow one.

I just need something that will fit into the two holes and let me give it a twist.

What is the name of the tool I need?
Attached Thumbnails
Click image for larger version

Name:	20210729_140355_copy_816x510.jpg
Views:	143
Size:	105.7 KB
ID:	242995  
Jdege is offline   Reply With Quote
Old 30-07-2021, 10:18   #2
Registered User
 
Dsanduril's Avatar

Join Date: Aug 2011
Location: Petersburg, AK
Boat: Outremer 50S
Posts: 4,227
Re: How do I open this inspection port?

I have one of those tools but no longer have the ports it opens (replaced with ports that take a winch handle). No idea what it's called, but it is just a bit of stout (1/4" or so) SS wire that is bent in a "V" and then two legs about 1/2" long that turn down to go into the holes. What is the spacing between the holes, I can measure mine (there is some flex in the "V")?

I'll be down at the boat in a next day or two, happy to mail it to you, PM me an address and I'll drop it by the post office.

[Edit]
Here's the fancy one from West Marine:

https://www.westmarine.com/buy/groco...67?recordNum=4

And the style I have:

Dsanduril is offline   Reply With Quote
Old 30-07-2021, 10:20   #3
Registered User

Join Date: Jan 2015
Location: SoCal
Boat: Formosa 30 ketch
Posts: 840
Re: How do I open this inspection port?

Pin spanner, or adjustable pin spanner. Look on McMaster-Carr.
Bill Seal is offline   Reply With Quote
Old 30-07-2021, 10:31   #4
Registered User
 
Sailmonkey's Avatar

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 9,148
Re: How do I open this inspection port?

Option 1

https://www.googleadservices.com/pag...BAgBEDw&adurl=


Option 2


https://www.defender.com/product3.js...186&id=4399933
Sailmonkey is offline   Reply With Quote
Old 31-07-2021, 09:49   #5
Registered User
 
Cadence's Avatar

Join Date: Dec 2008
Location: SC
Boat: None,build the one shown of glass, had many from 6' to 48'.
Posts: 9,832
Re: How do I open this inspection port?

Quote:
Originally Posted by Jdege View Post
My boat has diesel tanks with inspection ports that clearly take some sort of tool to open - but I don't know the name of the tool, so I don't know what to ask for, when I go looking to buy, rent, or borrow one.

I just need something that will fit into the two holes and let me give it a twist.

What is the name of the tool I need?
A spanner wrench.
Cadence is offline   Reply With Quote
Old 31-07-2021, 10:11   #6
Registered User

Join Date: Dec 2014
Posts: 75
Re: How do I open this inspection port?

Two drillbits that Just fit upside down, and a flat piece of iron.
If that does not work, tap the thing a bit with a small jammer and try again
Keep the iron as flat on the surface as possible
jakkum is offline   Reply With Quote
Old 31-07-2021, 11:27   #7
Registered User

Join Date: Feb 2014
Location: Fort Myers Beach, FL USA; Boston, MA USA
Boat: C&C Landfall 43 and O'Day 35
Posts: 69
Re: How do I open this inspection port?

I needed something similar to service my winch. It is a spanner wrench. I couldn't find one with pins that fit, so I made one out of two brackets and some screws and nuts. Hope this helps.
Attached Thumbnails
Click image for larger version

Name:	20210613_185114.jpg
Views:	40
Size:	409.6 KB
ID:	243049  
The Perfessor is offline   Reply With Quote
Old 31-07-2021, 11:33   #8
Moderator

Join Date: Jun 2015
Posts: 4,516
Re: How do I open this inspection port?

And then, when you've done as Jaccum suggests, take the next drill size down, and drill two holes in the flat bar, EXACTLY the same distance apart as the holes in your access port. Tap the holes in the flat bar using the NC (National Coarse) tap that is denoted the same as the diameter of the holes in that access hatch. Screw in a coupla roundhead or panhead machine screws, Drive a nut on the screws up against the flat bar, and trim the protruding threads to the depth of the holes in the access hatch.

Now you have a permanent key for the hatch, and you know how to deal with lost pin spanners in the future :-)

TrentePieds
TrentePieds is offline   Reply With Quote
Old 31-07-2021, 11:40   #9
running down a dream
 
gonesail's Avatar

Join Date: Mar 2006
Location: somewhere in the deep south
Boat: cape dory 30 MKII
Posts: 2,465
Images: 6
Send a message via Yahoo to gonesail
Re: How do I open this inspection port?

i used a spanner wrench on my stuck bronze inspection port and the wrench bent like a piece of spaghetti. will probably remove the port and soak it in some PB blaster for a few days .. and hope it loosens up.
__________________
some of the best times of my life were spent on a boat. it just took a long time to realize it

gonesail is offline   Reply With Quote
Old 31-07-2021, 12:21   #10
Moderator Emeritus
 
Hudson Force's Avatar

Cruisers Forum Supporter

Join Date: Nov 2008
Location: Lived aboard & cruised for 45 years,- now on a chair in my walk-in closet.
Boat: Morgan OI 413 1973 - Aythya
Posts: 8,347
Images: 1
Re: How do I open this inspection port?

I realize that my often used method is subject to slipping and less likely to work with an inspection port that has not been opened for a long time, but......

I simply hold the handles of two long phillips head screw drivers in the palm of my left hand with the points in the holes. While pressing down I pry another screwdriver between the two, fairly close to the plate, and lever them to open.

.....'always handy and usually works.
__________________
Take care and joy, Aythya crew
Hudson Force is online now   Reply With Quote
Old 03-08-2021, 12:28   #11
Senior Cruiser
 
tkeithlu's Avatar

Cruisers Forum Supporter

Join Date: Feb 2012
Location: Carrabelle, Florida
Boat: Fiberglas shattering 44' steel trawler
Posts: 3,707
Re: How do I open this inspection port?

Wow! What a compendium of wickedly good ways to open threaded inspection ports! Let me add tapping it around with a pin punch and a very small hammer. Fortunately, they make them with handles nowdays.
__________________
Never let anything mechanical know that you are in a hurry.
tkeithlu is online now   Reply With Quote
Old 03-08-2021, 12:37   #12
Registered User
 
garyfdl's Avatar

Join Date: Mar 2020
Location: Fond du Lac WI
Boat: Watkins 27 - 27'
Posts: 415
Re: How do I open this inspection port?

We always called the tool a 'pin spanner' but I'm not sure that is the correct name.

I have used this with good luck:

https://www.harborfreight.com/hand-t...ers-64087.html
__________________
"you ain't never smelled diesel 'til you've snorkled a submarine in a tail-wind"
garyfdl is offline   Reply With Quote
Reply

Tags
inspection

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
What Gasket Material for Diesel Tank Inspection Port ? Capt.Zula Engines and Propulsion Systems 64 20-11-2018 04:56
450: Lagoon water tank inspection port Bean Counter Lagoon Catamarans 4 25-12-2014 07:44
Inspection port on fuel tank magique Engines and Propulsion Systems 5 16-01-2014 07:34
What Sealant for Inspection Port on Fuel Tank? SV Demeter Construction, Maintenance & Refit 10 23-12-2012 10:22
Inspection Port and Clean Out CampDavid Plumbing Systems and Fixtures 4 24-10-2012 18:50

Advertise Here


All times are GMT -7. The time now is 04:41.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.