Broken MPH Sending Unit

W

Wrenz

Member
Joined
Jan 1, 2000
RO Number
1751
Messages
25
For lack of a better term, the white stick that is on the stern of my boat that judges MPH to send to my gauge on the dash broke this summer and I'm womdering what's involved in getting it fixed. Is it something I can do or do I have to pay my mechanic? I wish I could post a picture but I haven't figured out how to do that here. Everytime I try to "copy" it, there's nothing to paste when I get to this site. So I'll do my best to rescribe it here.

The black wire goes into a white plastic blade which is afixed to a holder screwed into the hull of the boat. This blade does not slide in and out of the holder like some do.

Does the black wire slide out of the white blade or is it not that simple? I'm not sure if repairing this involves replacing the wire all the way to the gauge on the dash or if just the plastic piece can be replaced and the black wire can fit into the new sending piece.

I can't be the first one to break one of these. Any input is appreciated!
 
The parts. Just a few dollars available at any marie parts store. The "wire" s actually a tube, the fin transfers pressure to the gauge in the dash. Just unscrew the ok'd one, and reinstall a new one. Put some silicon on the screws before up you install them. Then push the tube back on. 10 min job at most.
 
The "white stick" is a pitot tube. It will pop up if something bumps it. I use a boat pole to push it back down. Cost under $10.00 and takes 10 minutes to replace.
 
quote:
Originally posted by pocket change

The "white stick" is a pitot tube. It will pop up if something bumps it. I use a boat pole to push it back down. Cost under $10.00 and takes 10 minutes to replace.

Click to expand...


Yeah, mine wasn't designed that way unfortunately. No pop up to it. It just broke
 
Good Morning,
At the risk of being chastised may I strongly suggest you use anything BUT silicone on your boat. There are many other sealants you could use to seal screws above and below the waterline that won't cause silicone related grief "down the road".
Peter.
 
I used silicon as a generic term and should not have, but Savasa is correct, actual silicone is not ment for below the water line. Use a marine grad sealant like 3m or boatcawlk.
 
Got it. Thanks. I think that's what I have. I'll have to check my toolbox to be sure
 
Good Morning,
Not trying to be argumentative here but IMHO silicone has NO place anywhere on a boat (except maybe specific engine applications-gaskets etc.). I feel silicone is GREAT for your land based house (toilets, bathtubs etc.) but the residue left after application/removal is difficult to deal with on a boat if further procedures are anticipated (painting or re-sealing with a non-silicone product for example).
Peter
 
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