C 30CB

JBurg

Member
Joined
Nov 14, 2020
Messages
5
Fluid Motion Model
R-23 (Outboard)
Hull Identification Number
FMLC3027J516
Where is the depth transducer located on a 2016 30CB?
My Garmin started acting up and now is reading nothing. I've heard it could possibly be fixed on some models by adding fluid that may have leaked out. Any ideas?
 
on our 2017 C30, the transducer is below the floor right outside the door to the head. If you pull up the loose floor board right outside the door, you should see the shower sump and the transducer. Most fill the transducer with the same antifreeze you put in your potable water system to winterize.
 
SassyRed":2drkv1tw said:
on our 2017 C30, the transducer is below the floor right outside the door to the head. If you pull up the loose floor board right outside the door, you should see the shower sump and the transducer. Most fill the transducer with the same antifreeze you put in your potable water system to winterize.

What fluid would that be since we do not winterize our fresh water system? Our boat is in South Carolina in the water year round.

Thanks
 
Sharron":9cgb6gnw said:
SassyRed":9cgb6gnw said:
on our 2017 C30, the transducer is below the floor right outside the door to the head. If you pull up the loose floor board right outside the door, you should see the shower sump and the transducer. Most fill the transducer with the same antifreeze you put in your potable water system to winterize.

What fluid would that be since we do not winterize our fresh water system? Our boat is in South Carolina in the water year round.

Thanks
Use a "RV" antifreeze
 
SassyRed":c31pjia5 said:
on our 2017 C30, the transducer is below the floor right outside the door to the head. If you pull up the loose floor board right outside the door, you should see the shower sump and the transducer. Most fill the transducer with the same antifreeze you put in your potable water system to winterize.

Thank you. I actually looked everywhere, including near the shower sump. I may have missed it but I"ll take another look.
 
Outside the head - pretty much right as you get to the bottom of the steps. On our boat there is an irregularly shaped place where the floor can be lifted.
 
SassyRed":3ceaveb8 said:
Outside the head - pretty much right as you get to the bottom of the steps. On our boat there is an irregularly shaped place where the floor can be lifted.
It’s not there. Only the shower sump system.
 
I believe ours is located in the forward starboard corner of the main engine compartment.
 
Hi there!

Yes, there are two possible locations for the transducer in the C30. The first is like SassyRed had mentioned under the floor panel in the v-berth cabin. it should be visible just outboard of the shower sump box, a bit under the ledge of the floor. The second is right ahead of the starboard forward corner of the engine compartment, like asm777 mentioned. There is the possibility for there being one third location that should have been installed in literally only one C30, and that is under the wood floor panel in the q-berth. If you had this installation, you would see a PYHI access plate once you remove the q-berth mattress. Pretty unlikely though, as we only did this install on one boat. Hope this helps.


Ralf
 
Ralf

I found it under the front of the engine, directly below the alternator. Looks very difficult to get to. My depth readings started to go wrong and then just quit reading altogether. I've heard it might be the fact that the transducer has leaked out the fluid. Is this true? It won't be easy getting to the transducer so I am hesitant to go there if maybe I'm chasing a problem that doesn't exist.
Thanks for your help. I searched everywhere for that thing.
 
Just had the same issue. Added a couple ounces of antifreeze and good to go.

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Harry":g8om29bc said:
Just had the same issue. Added a couple ounces of antifreeze and good to go.

Sent from my Pixel 4 XL using Tapatalk

When the antifreeze level is low there is a reason.

(1) It was never filled properly and never worked correctly. Intermittent readings.
(2) leaking at the base ( filling will work temporarily) then intermittent readings.
(3) O-ring never installed ( filling will work temporarily) then intermittent readings.
(4) O-ring installed but not properly sealing because it is damaged or not installed properly (filling will work temporarily) then intermittent readings

When there are erratic readings, before filling the cup, look for evidence of leaking at base where it is sealed to the bottom, inspect the o-ring ( present, in good condition, installed properly, ) Then add antifreeze, place a paper towel to capture access antifreeze that leaks out as the transducer is installed, clean area around cup so inspection of leaks can be performed after fluid is added. If there is no evidence of leakage the transducer should function consistently.
 
JBurg":33qlbrrz said:
Ralf

I found it under the front of the engine, directly below the alternator. Looks very difficult to get to. My depth readings started to go wrong and then just quit reading altogether. I've heard it might be the fact that the transducer has leaked out the fluid. Is this true? It won't be easy getting to the transducer so I am hesitant to go there if maybe I'm chasing a problem that doesn't exist.
Thanks for your help. I searched everywhere for that thing.
On my Ranger R29 and previous boats, same issue as described above was caused by loss of fluid. in my cases, the base vibrated loose and the fluid leaked out slowly. I’ve filled up with water in a pinch but was told to use mineral oil long term. Never tried RV antifreeze. I ended up removing the base, cleaning the fiberglass well and using silicon to adhere the base to the hull. Let it dry for 24 hrs, added mineral oil and the top. My unit on the Ranger uses 6 screws which secure the top to the base. Two of the six were hard to access. On my previous boat the top secured in place by twisting about a quarter turn.

Franco


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