Anybody know the length and part number of the stock Wema sending unit for the freshwater tank in a H340? I would rather buy a new one prior to removing the old if I have to pull the flange. Any tips or tricks would be nice also.
H340 Wema Freshwater Sending unit
- Thread starter bamabaxter
- Start date
Hi we have a 45DS and the model that we have is.
Wema Model UP7-B
Www.wemausa.com
Wema@worldnet.att.net
Wema Model UP7-B
Www.wemausa.com
Wema@worldnet.att.net
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I think the right way is to remove the old and than see what you have
and measure and than order new.
You could make a quick cover and still use the boat but you want the right part than contact wema what you need.
Nick
and measure and than order new.
You could make a quick cover and still use the boat but you want the right part than contact wema what you need.
Nick
I had a defective WEMA water tank sensor on my 2000 H340. I could not find a suitable replacement match on the WEMA web site so I contacted them at info@wemausa.com. It turns out that the Hunter factory installed water tank sensor on my boat (marked 01-00, W2-17-H336) is a now discontinued model and has been replaced with the WEMA S3 series. This is a 0 to 180 ohms sensor and is 17 inches long. Curiously, the unit on my boat is a European, screw-in sensor which is mounted in a standard five-hole American style adapter ring. The gauge-compatible replacement for my boat is the European sensor # S3-432.
I had to deal directly with customer service at WEMA via email and phone and they were very helpful. As it turns out, you cannot purchase the new S3 sensors from the web site. The online sensors look the same but the ohms are different. The ones on the website are 240 ohms at empty and 33 at full. The replacement sender I need is 0 at empty and 180 at full. If you order online, you will need the entire system (gauge + sender) to make sure the units are compatible. I had to order my new sensor by phone directly from WEMA. Their contact number is on their web site.
I ordered a new sensor and unscrewed the old one from the mounting ring. The Hunter factory sealed the threads with some unknown caulking so I used a hot air hair dryer to soften the caulking and the sender unscrewed without any problem. There are only two wires to reconnect.
I had to deal directly with customer service at WEMA via email and phone and they were very helpful. As it turns out, you cannot purchase the new S3 sensors from the web site. The online sensors look the same but the ohms are different. The ones on the website are 240 ohms at empty and 33 at full. The replacement sender I need is 0 at empty and 180 at full. If you order online, you will need the entire system (gauge + sender) to make sure the units are compatible. I had to order my new sensor by phone directly from WEMA. Their contact number is on their web site.
I ordered a new sensor and unscrewed the old one from the mounting ring. The Hunter factory sealed the threads with some unknown caulking so I used a hot air hair dryer to soften the caulking and the sender unscrewed without any problem. There are only two wires to reconnect.
@John T1594 thanks again. I talked to WEMA today and the poor tech guy would not believe me when I told him that it was a Euro style unit in the boat. After going back and forth, I finally just pulled up this thread and read him the part number and resistance that I needed. He still was apprehensive and reminded me that there would be a restocking fee. Anyway, replacement S3-17 is on the way.