Problem with 270od

[Eddie Ray]

Aq125a270od22ft trophy
Have replaced prop and checked new one for slip. Noticed the linkage to shifter was sloppy adjusted that a little. Felt better. Still can not get over about twelve miles per hour. I do not seem to have reverse? It is on again off again?
The boat seems to run fine .gets to about ten mph easy enough . Then it struggles to go any faster? Give it more gas.rpms climb. But very little to no speed changes?
Anyway ,if you can help that would be great. If not I will have to change the name of the boat to the blue Turtle.lol
Thanks
Eddie

 

[Eddie Ray]

Re: Problem with 270od

Aq125a270od22ft trophy
Have replaced prop and checked new one for slip. Noticed the linkage to shifter was sloppy adjusted that a little. Felt better. Still can not get over about twelve miles per hour. I do not seem to have reverse? It is on again off again?
The boat seems to run fine .gets to about ten mph easy enough . Then it struggles to go any faster? Give it more gas.rpms climb. But very little to no speed changes?
Anyway ,if you can help that would be great. If not I will have to change the name of the boat to the blue Turtle.lol
Thanks
Eddie

I recently changed the fluid in the OD. Will do so again tommorow . Last time it looked real good. Could a low level or water in the oil cause such a problem? Don mentioned a cone slippage? Any ideas where to start to look? Can't find it in my book or the manual ? Is it called something else. Some friend suggested I look at the dog clutch? I've done that on my IB,never on an OD. Thanks as always for any help.
Eddie

 

[Don S]

Re: Problem with 270od

Could be your shift cable is just too old and worn out inside that it's got too much slop to work both directions, or even a worn out control.

You need to run the engine and look at the shift mechanism on the drive and see if it's going all the way into gear both forward and reverse. If not find out why.

You don't have shift dogs, Volvo doesn't use them.

The cone clutch could be your problem. But that is also a spendy problem. Water in the oil will cause problems. Do you have water in it now (Milky oil)?

 

[Eddie Ray]

Re: Problem with 270od

Could be your shift cable is just too old and worn out inside that it's got too much slop to work both directions, or even a worn out control.

You need to run the engine and look at the shift mechanism on the drive and see if it's going all the way into gear both forward and reverse. If not find out why.

You don't have shift dogs, Volvo doesn't use them.

The cone clutch could be your problem. But that is also a spendy problem. Water in the oil will cause problems. Do you have water in it now (Milky oil)?

Would the shift cable be able to cause the problem with it not going over about twelve mph? I will drain the oil in the morning. To check for water. She takes 30 wt oil right? Last time I changed it it looked good.but it an easy way to eliminate a potential problem. Everyone keeps telling me if it was the cable,it would either go in gear or it wouldn't ? I don't know this OD well enough to know? She is old,and there is play in the cable?
Thanks Don .
Eddie

 

[Don S]

Re: Problem with 270od

If the cone clutch is not all the way engaged, sure it can slip. If the shift mechanism ramps are worn off and won't help it into gear it's even worse. if it's been slipping for a while then the cone would probably slip if everything else was perfect.

 

[dennis461]

Re: Problem with 270od

Go back to your other thread and look at the picture I posted.

 

[Eddie Ray]

Re: Problem with 270od

Thanks guys,I will give her the once over today. I'll let you know what I find?
Thanks for the guidance .
Eddie

 

[jeffnick]

Re: Problem with 270od

You are using the correct oil aren't you?

 

[Eddie Ray]

Re: Problem with 270od

I used the oil spec. By the book I have. I believe it is 30 wt. Motor oil. But I will check to be sure. If that is wrong please let me know.
Also ,is there a chance the shift shoe could be damaged or worn to the point in is not fully engaging ? I think I might pull that out and have a look. While I have the oil out of it.
As always thanks really for the help !
Don't know how people ever got by with out computers?
Eddie

 

[Eddie Ray]

Re: Problem with 270od

Looked at book again. It say to use 10w-30 or 10w-40 in the stern drive unit. I live in SW Florida. The water is generally warm. Even in the winter it is not that cold. Which oil should I use?
Thanks
Eddie

 

[Eddie Ray]

Re: Problem with 270od

Update? Drained the oil. Looks good,no water or metal in there. Took out shift mech. The shift shoe looks great. In fact everything I could see in that opening looks really good? I did play around with the shift cable and linkage some? It's weird,probably worn .not to sure what to think. If you adjust it so that it completely ,fully engages in forward. It seems to not be able to go all the way fully in reverse and vice versa? It dose not look like it needs to go fully up or down to engage but I don't know if that little movement at the very end of the movement is what could be making the difference.
All that being said,what section of the drive contains the cone clutch? Maybe I should start looking into that?
Thanks as always
Eddie

 

[jerome radtke]

Re: Problem with 270od

There is no cone clutch. The only slippage, once you are in gear, would be a spun prop hub.

Areas to check are, if you have the right gear ratio,
2.15 - 1 for 4 cylinder engines.
1.86 - 1 for 6 cyl
1.68 - 1 for v-8

You could also have the wrong size prop resulting in slip, or that amount of spin your prop produces that does move your boat forward.. created thru size and pitch.

Perhaps some outfit like propgods.com could advise you