volvo 270 water leak- followup

[JAL51974]

I followed Aldo's advice and examined it more closely- leak appears from the bottom of the exhaust bellows near where the clamp is, but it stops at increased throttle (3/4 throttle)- is that normal? The bellows feels and looks intact and pliable when I examined it later in the tilt up position.<br /><br />Secondly, I discovered that after 10 mins. running at 3/4 throttle on the muffs the temp increased to 220- that doesn't sound normal to me if the engine is supposed to open the thermostat fully at 180-190?<br /><br />Oil level and pressure look OK. What else should I check by process of elimination to diagnose this?<br /><br />thanks for the help for this rookie! <br /><br />Joe

 

[Dunaruna]

Re: volvo 270 water leak- followup

Joe, I can't find your previous thread so I don't know what you have or have not been checking. It's easier for everyone involved if you continue your thread rather than starting a new one.<br /><br />The exhaust bellow has a drain hole built in, as long as it's not badly damaged - don't worry.<br /><br />Why is it overheating is the big question, lets get back to your first thread and see what's what - o/k? Can you find it and repost, then hopefully Don will chime in.<br /><br /><br />Aldo

 

[Don S]

Re: volvo 270 water leak- followup

First of all, running at that rpm on the hose is a NO-NO. Going higher for a few seconds is ok, but not for 10 minutes. About 1500 is the most you should be going. The problem with higher rpm's is the fact that along with the water, you also get a lot of air because the muffs don't block the passages completely. Also, did you block the hole (Secondary pickup) on the front of the bullet when you ran it? If not, that would be even less water, and more air.<br />The leak in the bellows won't be a problem, but the Volvo's didn't have drain holes in them. If it's a very small hole, don't worry about it for now.<br />I would suggest you put the boat in the water and try it. You should see around 190° when running. 220° would be a problem.<br />I doubt you hurt anything.

 

[Dunaruna]

Re: volvo 270 water leak- followup

Originally posted by Don S:<br /> <br />The leak in the bellows won't be a problem, but the Volvo's didn't have drain holes in them.

Interesting. I've just replaced mine. VP part number 876294 (both bellows + clamps were in the kit). The exhaust bellow most definetly has a drain hole. I'm not trying to start an argument Don, what am I missing here?<br /><br />Aldo

 

[JAL51974]

Re: volvo 270 water leak- followup

this was my original post about the AQ125/270 on a 1985 vintage Bayliner:<br />When I run the outdrive on the garden hose/mufflers I see a small water leak from under the unit flowing over the zinc on the transom. Could that be a hose problem at the water intake? How do I troubleshoot it? The temp runs normally 180-190 again on the muffler since I have not had it in the water yet so its not overheating. I bought the boat from a friend over the winter but went out on it with him Labor Day, no problem with temps or anything all day.<br /><br />Aldo replied (and this was what I checked out)-<br />There is two areas that may be the source of your water leak:<br /><br />1. The 'S' shaped hose and connecting flange gasket.<br /><br />2. The centre pivot tube seals/bearings - worn bearings will cause a water leak and excessive steering freeplay.<br /><br />Your raw water pump is engine mounted, therfore it sucks water into the system through the two areas I've described. Running on muffs you are pressurising the system which effectively bypasses the need for a pump. <br /><br />To find your leak you will need to find exactly where it is dripping from. While on the muffs turn the leg from side to side until you have a better view of the area, you could also disconnect the hose from inside the boat and connect your garden hose so that it flows back outside the transom.<br /><br />Don's point is well taken- I wondered afterwards if running it that high was not good!<br />I didn't see the rpms because someone else was at the controls taking my directions. the secondary pickup was not blocked so maybe that is what caused the temp to spike? It seems that the water leak stopped abruptly at the increased throttle- less water pumping through? resulting in increased temps.<br /><br />The leak definitely was not coming from the other two bellows located above the exhaust bellows from what I could see.<br /><br />Thanks guys.<br />Joe

 

[Don S]

Re: volvo 270 water leak- followup

Couple of things.<br />Aldo, he uses a different exhaust bellows. Different number. No hole in the older styles. The pn you gave (876294) is for the ujoint bellows and it better not have a hole in it.......<br /><br />

The leak definitely was not coming from the other two bellows located above the exhaust bellows from what I could see.<br />

There is only one other bellows.<br /><br />Item 24 in the first picture is the exhaust bellows on your 270 drive.<br />In the second picture, item #69 is the ujoint bellows.<br />Other than that, there are no other bellows.<br /><br />

<br /><br />

 

[Dunaruna]

Re: volvo 270 water leak- followup

No problems, thanks. Both exhaust & shaft bellows were in the box although the box had the part number for the shaft bellow only - dunno why.<br /><br />Aldo

 

[rodbolt]

Re: volvo 270 water leak- followup

DonS<br /> I sold a new ex bellows last week for a volvo that had drain holes, could have been for the SX cause all he had was a part number and all I did was pull it from the shelf so I dont know exactly what it fit. the one I sold yesterday for an old 290 did not. the 290 one did have a set of flappers in the bellows that I had forgotten about. I was chuclking to myself remembering the pain in the arse replacing the bellows that has the flappers in them is . I did wish him luck

 

[JAL51974]

Re: volvo 270 water leak- followup

Thanks for the pics Don. the leak was coming from the exhaust bellows- I mispoke in the earlier post calling the water hose a bellows. In the Seloc manual top to bottom it is ujoint bellows-water hose-exhaust bellows and the leak is at the bottom one on mine.<br /><br />Joe

 

[JAL51974]

Re: volvo 270 water leak- followup

Finally got to take her out on the lake today. Looked like no problem with the temps- ran about two hrs. and it stayed 180-190 deg.<br /><br />So should I worry about the water leaking from the exhaust bellows?<br /><br />A second question on the 270 outdrive-<br />when I started the day I made sure the drive was in the full down position. Sometime during the cruise, the red light lit up on the dash signaling that the drive had come up- I couldn't tell by looking at it, it seemed in the down position to me.<br /><br />Also when backing up with too much throttle I heard a thump noise- could that drive pop up in that manner? I remember reading some earlier post about the spring on the retaining pawlmechanism needing adjustment or replacement- could that be this problem?<br /><br />Thanks.<br /><br />Joe

 

[Don S]

Re: volvo 270 water leak- followup

The thumping you are hearing is the drive raising up and banging back down when you go to neutral or forward......Not good, and breaks things.<br /><br />There is a whole lockdown mechanism on the lower part of the drive that locks on the cross pin in the transom shield. It may have a spring broken, but they also wear out about the same time. The only thing to do is check the complete lock mechanism for broken and worn parts, plus check the adjustment of the linkage to the tilt mechanism and switch for the light. If the drive wasn't ALL the way down, it may shut off the light, but not engage the reverse lockdown.<br />They are hard to understand and even harder to work on.<br />Do you have a Volvo outdrive manual for your 270? There is instructions for adjustment and repair in it.<br /><br />Here is some of the info on the adjustments.<br /><br /> Click here

 

[JAL51974]

Re: volvo 270 water leak- followup

Don- I have the seloc manual for 1968-91 VP. I will check on the parts this weekend on the lockdown mechanism- maybe it is the spring is worn out. thanks for the help.<br /><br />you are right there is never enough time!<br />Joe

 

[JAL51974]

Re: volvo 270 water leak- followup

I checked out the lock down parts on the tilt mechanism. When the drive is fully down I can still easily pick it up off the pin that it is supposed to lock down on. There is a small spring the shorter one of the three, it is in the middle of the locking mechanism, and it seems to not be providing enough tension for the retaining pawl to hook and hold on the pin.There is space between the L-shaped hooks on the retaining pawl and the pin, if the spring was giving it enough tension it would lock down. Does this make sense?

 

[markhunting4032]

Re: volvo 270 water leak- followup

I am having the same problem. Mine seems to ne where the push rod goes thru to the lift mechnism. It does not come thru the hole like it is supposed to. I would also check that.

 

[Don S]

Re: volvo 270 water leak- followup

I would hope he has it fixed by now, this thread is from 2005.