Speedometer hose to nipple - DPS-A - Need part number

[Leo87]

Hi everyone, I noticed a hose with a metal fitting and a small hose hanging near the hydraulic lines by the passenger side trim ram. I couldn't figure out what it was so I left it alone. I also noticed a plastic plug on the outdrive near where the hose was but again I had no idea what it was. Once on the water I noticed the speedometer wasn't working at all so now I am thinking this hose must go to the speedo and needs to be be connected to the white plastic plug on the outdrive. The problem is I can't find the part number for the plug anywhere. Mine must be broken. I assume there must be a nipple that connects to the hose. I attached a couple of pictures that I hope you can make out what I am talking about. Appreciate any help you can give me.

 

[Leo87]

No Title

Here is another picture of the plastic plug...

 

[skydiveD30571]

This might be it. Check #29 and #30 here.

http://www.marinepartseurope.com/en/volvo-penta-explodedview-7746270-44-9920.aspx

 

[Leo87]

That's it! I spent hours looking in the wrong place. Thank you!

 

[davidlees]

How do you remove part #30, the plastic fitting in the outdrive?

 

[Leo87]

I haven't done it yet. I am hoping I can just pull hard on it. Has anyone done it? I'll be trying this at my slip. Rather not have to pull the boat out just for this.

 

[Leo87]

No Title

 

[Thalasso]

Mine has been broke for i don't know how long. Boat doesn't even have a speedometer. I use the GPS

 

[Leo87]

So I had to pull the boat to clean and touch up the bottom paint. I installed the new fitting and re-attached the hose that goes up to the speedometer.
The fitting was really easy to remove. I used needle nose pliers and then pulled. It came right off but the plastic
'hooks" at the end broke. I just flushed a ton of water both directions to make sure they came off the drive. I had also removed the water intake covers to make it easier to flush water.
Installing it was just a matter of removing the O-ring from the old one, putting it on the new one, and then press it in with very little effort.
I also inserted a long nail in the hole at the front of the leg where the water goes in. It was a little clogged up but after a while the water started flowing easily. The problem is that it is not reading accurately. I was doing 48 on GPS, and it was showing about 20 on the speedometer. Should I disconnect the hose from the back of the speedometer and blow compress air? I've never seen the back of one so I am not sure how it works. Thank you for your help in advance.

 

[skydiveD30571]

That is the usual way of clearing that line, yes. But if the drive pitot intake becauses clogged, it can be a real pain getting it completely clear. Having GPS like you, I just pulled the hose off the back of the spedometer and plugged it and use the GPS now.

 

[BRICH1260]

push on the barbed side of the plastic unit wit a 3/8 ratchet extension using the boxed end.

 

[Leo87]

Thank you Skydive and Brich. I think I'll also try some compress air. I still need to put a nail in it again while in the water just in case it got clogged up. Appreciate all your help.