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 21-06-2022, 13:30   #1
Registered User

Join Date: May 2022
Location: Uk
Boat: Mirage 270
Posts: 15
Raw water pump screws

Hi all
I’m looking to change the screws I. The back of the water pump">raw water pump they are a Phillips head. I wonder if anyone has found them with a bolt head as this would be easier at sea to use. It’s number 15 in. The attached photo
Attached Thumbnails
Click image for larger version

Name:	9AAD0547-0EC8-4D71-BA3C-D1DDB5615D05.jpg
Views:	134
Size:	211.5 KB
ID:	259775  
Outdoortony is offline   Reply With Quote
Old 21-06-2022, 13:36   #2
running down a dream
 
gonesail's Avatar

Join Date: Mar 2006
Location: Florida
Boat: cape dory 30 MKII
Posts: 3,112
Images: 7
Send a message via Yahoo to gonesail
Re: Raw water pump screws

my westerbeke pump has hex heads on the cover plate. you get an extra one with the new impeller. seems like a west marine or hardware store would have these.
__________________
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 21-06-2022, 13:50   #3
Registered User

Join Date: May 2022
Location: Uk
Boat: Mirage 270
Posts: 15
Re: Raw water pump screws

Thanks buddy
I’ll see what I find
Outdoortony is offline   Reply With Quote
Old 21-06-2022, 13:52   #4
Registered User

Join Date: May 2022
Posts: 760
Re: Raw water pump screws

They are standard machine screws, not magic water pump cover screws. Once you figure out what size they are the rest is easy...

You just replace them with whatever flavor head suits your fancy. You can even get them as knurled thumbscrews if you look hard enough.
ItDepends is offline   Reply With Quote
Old 21-06-2022, 13:54   #5
Moderator
 
JPA Cate's Avatar

Join Date: Nov 2011
Location: aboard, cruising in Australia
Boat: Sayer 46' Solent rig sloop
Posts: 28,434
Re: Raw water pump screws

Hi, outdoortony, if you would add your general location to your avatar, we could tune our answers to your location.

In our neck of the woods, there are nuts and bolts stores, dealing in fasteners and associated goods, even thumb screws and Robertson screws (the ones with square holes), both of which are easy to use in a seaway. At a West store, you'll pay top dollar for screws.

Ann
__________________
Who scorns the calm has forgotten the storm.
JPA Cate is online now   Reply With Quote
Old 21-06-2022, 13:58   #6
Registered User

Join Date: May 2022
Location: Uk
Boat: Mirage 270
Posts: 15
Re: Raw water pump screws

Awesome thanks would it be length and width for the size?
Outdoortony is offline   Reply With Quote
Old 21-06-2022, 13:59   #7
Registered User

Join Date: May 2022
Location: Uk
Boat: Mirage 270
Posts: 15
Re: Raw water pump screws

Sweet will do in in the uk but I’ll update my profile ��
Outdoortony is offline   Reply With Quote
Old 21-06-2022, 14:19   #8
Registered User

Join Date: Sep 2017
Location: Langley, WA
Boat: Nordic 44
Posts: 2,501
Re: Raw water pump screws

Those screws are bronze. Be careful what you use. Brass or stainless should be OK. Nothing else or you will have serious problems the next time you take it apart.
stormalong is offline   Reply With Quote
Old 21-06-2022, 23:06   #9
Moderator
 
JPA Cate's Avatar

Join Date: Nov 2011
Location: aboard, cruising in Australia
Boat: Sayer 46' Solent rig sloop
Posts: 28,434
Re: Raw water pump screws

Take one of the screws with you and match it. The threads have to have the same pitch, and the diameters match; plus, the lengths should be the same, or they won't tighten properly.

Ann
__________________
Who scorns the calm has forgotten the storm.
JPA Cate is online now   Reply With Quote
Old 21-06-2022, 23:43   #10
Registered User

Join Date: May 2022
Location: Uk
Boat: Mirage 270
Posts: 15
Re: Raw water pump screws

Good knowledge thank you
Outdoortony is offline   Reply With Quote
Old 21-06-2022, 23:45   #11
Registered User

Join Date: May 2022
Location: Uk
Boat: Mirage 270
Posts: 15
Re: Raw water pump screws

Yea I figured that but not sure where has them.
Outdoortony is offline   Reply With Quote
Old 22-06-2022, 00:08   #12
Moderator
 
Jim Cate's Avatar

Join Date: May 2008
Location: cruising SW Pacific
Boat: Jon Sayer 1-off 46 ft fract rig sloop strip plank in W Red Cedar
Posts: 21,154
Re: Raw water pump screws

Most likely will be a metric size. Look on the index for that parts diagram you posted. On the list-out of parts, that number 15 will likely be described, something like "M3" (meaning 3 mm diameter) x 6 (meaning 6 mm length... or something like that. Likely be easier to find in stainless than in bronze, but either will do. Not a high stress application!

Jim
__________________
Jim and Ann s/v Insatiable II, lying Port Cygnet Tasmania once again.
Jim Cate is online now   Reply With Quote
Old 22-06-2022, 04:33   #13
CLOD
 
sailorboy1's Avatar

Join Date: Jul 2007
Location: being planted in Jacksonville Fl
Boat: none
Posts: 20,364
Re: Raw water pump screws

Quote:
Originally Posted by Outdoortony View Post
Hi all
I’m looking to change the screws I. The back of the raw water pump they are a Phillips head. I wonder if anyone has found them with a bolt head as this would be easier at sea to use. It’s number 15 in. The attached photo
I long ago changed mine from the crew head to hex head on my Yanmar 4JH3E. They were just standard metric threads

I got a new impeller last month and now it is only available as a "kit" that includes new bolts with hex heads.

BTW - those are bolts not screws
__________________
Don't ask a bunch of unknown forum people if it is OK to do something on YOUR boat. It is your boat, do what you want!
sailorboy1 is offline   Reply With Quote
Old 22-06-2022, 04:51   #14
Registered User
 
sailingharry's Avatar

Join Date: Jun 2009
Location: Annapolis, MD
Boat: Sabre 34-1 (sold) and Saga 43
Posts: 2,281
Re: Raw water pump screws

Quote:
Originally Posted by sailorboy1 View Post
BTW - those are bolts not screws
Actually, I'm about 95% sure they are screws. Most water pump covers are held on with fasteners that are fully threaded with Philips heads, and those are "machine screws."

I have seen some people differentiate between a machine screw and a machine bolt, or a machine bolt has a hex head.

If the water pump fastener has a shank, and unthreaded part between the head and the threads, then it would indeed be a bolt.

Google "machine screw" and see if that looks like what holds your water pump cover on. Then see if you can find a Phillips head bolt.

And to the OP's question, on my last boat I replaced the fasteners with SS Allen head, it was an almost impossible place to reach and the Allen head seemed to provide a more positive engagement when removing them. I haven't made the change on my current boat yet, as it is easier to reach.
sailingharry is offline   Reply With Quote
Old 22-06-2022, 07:09   #15
Registered User

Join Date: May 2014
Location: USA
Boat: 41' yawl
Posts: 1,187
Re: Raw water pump screws

When I need a very specific fastener I usually get it from www.mcmaster.com.

Don't think they do bronze though, boltdepot.com has silicon bronze i believe.
chris95040 is offline   Reply With Quote
Reply

Tags
crew, pump, raw water, raw water pump, water, water pump

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
Quick Raw Water Pump Sea Water Seal Replacement belizesailor Engines and Propulsion Systems 31 09-08-2022 19:23
Raw Water Pump Temperature as a Proxy for Sea Water Cooling Flow Dockhead Engines and Propulsion Systems 16 19-09-2015 10:45
Screws Stuck in Water Pump openseas Plumbing Systems and Fixtures 31 22-06-2014 19:25
Raw Water Pump vs Fresh Water Pump Cheechako Engines and Propulsion Systems 44 01-02-2012 14:31

Advertise Here


All times are GMT -7. The time now is 16:58.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.