Temperature Sending Unit - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 


Like Tree3Likes
  • 1 Post By Faster
  • 2 Post By billyruffn
Reply
 
LinkBack Thread Tools
  #1  
Old 03-08-2013
Senior Member
 
Join Date: Jul 2006
Location: Corpus Christi, Tx
Posts: 895
Thanks: 10
Thanked 15 Times in 14 Posts
Rep Power: 9
ccriders is on a distinguished road
Temperature Sending Unit

I'm going to replace the water temperature guage and sending on my Atomic Four. What is the best product to presoak the sending unit for a clean removal and what is the best product to treat the threads when installing the new sending unit?
I find that PB Blaster is not particularly effective for stainless steel screws in aluminum, but have not used it on brass to iron fittings.
I appreciate any advice you might have.
Thanks
Reply With Quote Share with Facebook
  #2  
Old 03-08-2013
tommays's Avatar
Senior Member
 
Join Date: Sep 2008
Posts: 4,232
Thanks: 1
Thanked 24 Times in 24 Posts
Rep Power: 6
tommays will become famous soon enough
Re: Temperature Sending Unit

PB is pretty good

Raw SS and aluminum is one of natures better locktites and right there with red

I really have not had a real bad time with senders as they are brass and only have a few threads in the block

Just be sure to go at it with a 6 point tool as once you round it off you kind of screwed
__________________
1970 Cal 29 Sea Fever

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1981 J24 Tangent 2930
Tommays
Northport NY


If a dirty bottom slows you down what do you think it does to your boat
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #3  
Old 03-08-2013
billyruffn's Avatar
Senior Member
 
Join Date: Sep 2004
Location: Massachusetts
Posts: 1,272
Thanks: 5
Thanked 25 Times in 17 Posts
Rep Power: 10
billyruffn will become famous soon enough
Re: Temperature Sending Unit

Here's an easier, cheaper solution I used for several years after the temperature sensor packed up: buy an inexpensive, digital hot tub thermometer -- they come with the sensor at the end of a 5 ft (or so) insulated wire. Attach a small fishing weight to the sensor end of the wire and drop it down a cockpit drain. You don't need water temp all the time -- normally, only when you're thinking of going swimming or wanting to detect entry or exit from an ocean current (like the Gulf Stream). The hot tub thermometer works well for this purpose and when not needed it fits easily in a drawer/locker (the read out unit is really small 2 x 2x 1 inch.)

I have since replaced the speed paddle assembly and now have a proper temp sensor installed. The hot tub thermometer now serves as a battery temperature read out when I'm putting a big charge in the batteries on a hot day. I wedge the sensor between the cases of two batteries and set the display unit where I can see it easily.

Last edited by billyruffn; 03-08-2013 at 06:47 PM.
Reply With Quote Share with Facebook
  #4  
Old 03-08-2013
Faster's Avatar
Just another Moderator
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 14,604
Thanks: 67
Thanked 178 Times in 174 Posts
Rep Power: 10
Faster has a spectacular aura about Faster has a spectacular aura about Faster has a spectacular aura about
Re: Temperature Sending Unit

Quote:
Originally Posted by billyruffn View Post
Here's an easier, cheaper solution I used for several years after the temperature sensor packed up: buy an inexpensive, digital hot tub thermometer --
... ummm.... BR, he's trying to change his A4's coolant temperature setup.. I think the sea temp might cause some confusion!

Neat idea, though...
Silvio likes this.
__________________
Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Reply With Quote Share with Facebook
  #5  
Old 03-08-2013
bwindrope's Avatar
Break, curse, fix, repeat
 
Join Date: Feb 2007
Location: Bainbridge Island, WA
Posts: 267
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 8
bwindrope is on a distinguished road
Re: Temperature Sending Unit

You do not want to put anything on the threads of the sender as it needs electrical contact with the motor block to ground the unit. I've replaced and removed mine several times and it really shouldn't be too tough. I've always found a crescent wrench to work fine, and they are not the best for anything really stuck. You may be surprised with the ease of removal. And PB is great, but likely not that helpful in this situation.
__________________
Aeolus
Gulf 32
Bainbridge Island, WA

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #6  
Old 03-09-2013
RobGallagher's Avatar
HANUMAN
 
Join Date: Aug 2001
Location: Noank, Connecticut, USA
Posts: 1,319
Thanks: 7
Thanked 12 Times in 11 Posts
Rep Power: 13
RobGallagher is on a distinguished road
Re: Temperature Sending Unit

Kroil
__________________
HANUMAN
'88 C&C 30 MKII
NOANK, CT
Reply With Quote Share with Facebook
  #7  
Old 03-09-2013
billyruffn's Avatar
Senior Member
 
Join Date: Sep 2004
Location: Massachusetts
Posts: 1,272
Thanks: 5
Thanked 25 Times in 17 Posts
Rep Power: 10
billyruffn will become famous soon enough
Re: Temperature Sending Unit

Quote:
Originally Posted by Faster View Post
... ummm.... BR, he's trying to change his A4's coolant temperature setup.. I think the sea temp might cause some confusion!

Neat idea, though...
Ahhhhhh, now I see what he's up to....I was ignorant of exactly what an Atomic Four was. Must be an engine. In which case my little Radio Shack hot tub thermometer can be employed thusly:

Drill a small hole in the radiator cap and insert the sensor end of the probe. Then.....oh, yea....that won't work....forgot about the pressure involved. Well don't drill the hole, just attach the sensor to the fill cap with a big glob of silicone. Very seamanlike, eh?

Faster and Silvio like this.
Reply With Quote Share with Facebook
  #8  
Old 03-09-2013
Member
 
Join Date: Dec 2011
Location: Wilmington NC
Posts: 40
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
dorymate1 is on a distinguished road
Re: Temperature Sending Unit

The scary part is someone might actually try that silicone bloop idea. lots a luck with that one
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
May you weather all storms
Reply With Quote Share with Facebook
  #9  
Old 03-10-2013
billyruffn's Avatar
Senior Member
 
Join Date: Sep 2004
Location: Massachusetts
Posts: 1,272
Thanks: 5
Thanked 25 Times in 17 Posts
Rep Power: 10
billyruffn will become famous soon enough
Re: Temperature Sending Unit

Quote:
Originally Posted by dorymate1 View Post
The scary part is someone might actually try that silicone bloop idea. lots a luck with that one
Hey! What you got against silicone? When the temperature gauge on your engine craps out I'm gonna bet you'd love to have a hot tub thermo and some silicone.
Reply With Quote Share with Facebook
  #10  
Old 03-10-2013
Member
 
Join Date: Dec 2011
Location: Wilmington NC
Posts: 40
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
dorymate1 is on a distinguished road
Re: Temperature Sending Unit

Not being a pool guy don't realy know what a hot tub thermometer is. But would most likely hose. Clamp. It wire tie itor safety wire it before silicone. Not heat resistant enough unless RTV that works when mechanically squeezed. Engine parts are also to greasy for silicone. Leave the silicone in the drawer for this one.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
May you weather all storms
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
where is the temperature sender unit on my BETA?! jaybeegee Electrical Systems 6 02-25-2013 06:50 PM
Yanmar 1GM10 Thermostat and Temp Sending Unit karluk Diesel 5 07-01-2012 05:54 AM
Fuel sending unit leaking Donaldpeter Gear & Maintenance 5 12-20-2010 10:12 PM
Temp Sending Unit on Heat Riser - how to test? preservedkillick Gear & Maintenance 3 05-22-2009 07:59 PM
Sending Unit for DET MAR Fuel Gage ABullard Gear & Maintenance 3 01-29-2003 05:14 AM


All times are GMT -4. The time now is 08:52 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.