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Old 01-18-2021, 09:04 PM   #1
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Stuffing box wrenches

I feel like this is a stupid problem to have, but I canít find stuffing box wrenches large enough for my boat. Iím up to about a drip per second now with the shaft stationary so probably time to tighten. I measure the nuts with calipers at 3 1/4 inches. Even my 14 inch pipe wrench only opens to 3 inches and Iíd prefer a smooth jaw so I donít damage anything. I donít feel my boat is unusual, a single screw 225HP Lehman but I just canít find a wrench that will open wide enough. Any help or tips are appreciated.
Glenn & Jessica
El Viaje San Diego
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Old 01-18-2021, 09:24 PM   #2
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Yorkdesignandfab.com sells a 3.25Ē wrench for stuffing boxes.
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Old 01-18-2021, 09:26 PM   #3
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You could try plumbing wrench's, various sizes.
https://www.amazon.com/Adjustable-BE...s%2C259&sr=8-9
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Old 01-18-2021, 09:31 PM   #4
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Comod, thanks for that link. Was wondering if I was going to have to have a big crowfoot wrench custom plas-burned.
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Old 01-18-2021, 10:05 PM   #5
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I cut my own from a piece of plate.

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Old 01-18-2021, 10:16 PM   #6
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Yorkdesignandfab.com bought two 3.25 inch wrenches. Thank you Comodave.
$100, but better than sinking in the slip for sure.
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Old 01-18-2021, 11:27 PM   #7
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I welded two from 3/8 x 3/4 cold rolled flat bar.
They are hung in the engine compartment.
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Old 01-19-2021, 01:06 AM   #8
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Here`s the one readily available in Aust.:https://www.whitworths.com.au/packin...tainless-steel. PITA to use.
There is a much better alternative, like a vicegrip, with bicycle chain which goes round the nut. Here you go: https://www.ebay.com.au/itm/10-Chain...AAAOSwvGdbn~G~
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Old 01-19-2021, 01:21 AM   #9
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I use a pipe wrench and something like this...a really wide mouth vice grip:

https://www.amazon.com/IRWIN-VISE-GR.../dp/B00004SBB1
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Old 01-19-2021, 01:49 AM   #10
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Quote:
Originally Posted by Mengering View Post
Yorkdesignandfab.com bought two 3.25 inch wrenches. Thank you Comodave.
$100, but better than sinking in the slip for sure.
No problem. Glad to help.
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Old 01-19-2021, 09:31 AM   #11
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I can't say all, but a lot of people make their own. I have a set that came with the new boat, my old boat I had a set made. Cost me 75.00 at a local fab shop for 2 made out of 3/8 plate.
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Old 01-19-2021, 09:45 AM   #12
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Found one in the bilge of my new boat, home made from 3/8" plate with a square hole for a 1/2" socket drive. With a nice Snap On wrench still attached. I call that a win. Cutting the square hole must have been tricky, it would have been easier to give it an integral handle.
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Old 01-19-2021, 01:11 PM   #13
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Rigid makes a really nice adjustable wrench for that...

I have one Rigid and one West Marine wrench, it takes two.
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Old 01-19-2021, 04:14 PM   #14
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I bought a pair of these from Sears back when Craftsman was Craftsman.

Superior Tool 03840 Adjustable Combination Wrench
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Old 01-19-2021, 07:07 PM   #15
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If your choice has a handle,consider if it is constrained by what surrounds the gland nuts.
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Old 01-19-2021, 09:08 PM   #16
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I knock the lock nut loose with a hammer. Then snug the gland nut with channel locks. Then snug the lock nut back up with the hammer, holding the gland snug with the channel locks. Easy peasy.
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Old 01-22-2021, 10:52 PM   #17
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I got mine at an auction of tools I call it Monkey Wrench My Dad said it looked like a tool that came with Model A's (or was that T's) anyway they are still made and sold. See:

https://www.mcmaster.com/monkey-wren...pe-wrenches-8/

Good luck to you

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Old 01-22-2021, 11:03 PM   #18
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If the link above doesnt work go www.mcmaster.com and search for 'monkey wrench'

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Old 01-23-2021, 03:10 PM   #19
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Actually companies like Rigid also offer smooth jawed wrenches. Lots of places where a pipe wrench is needed but not the marks teeth leave.

The old style Monkey Wrenches may be narrower so that may be an advantage.
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Old 01-24-2021, 08:25 AM   #20
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Quote:
Originally Posted by Comodave View Post
Yorkdesignandfab.com sells a 3.25Ē wrench for stuffing boxes.

Thanks Comodave. I have been using a pipewrench with a cut-off handle.

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