Volvo Penta 280 DP outdrive problem

[MyBayliner28]

Dear friends!
Need your opinion and advice.

Engaged "forward", came back to marina at full speed and then...from "neutral" to "reverse" ot to "forward" - prop barely turning with "whining sound" no matter how much throttle .
Took the boat ouit of the water. Results of inspection:
- Shifter cable - not damaged or broken
- shift shoe - not damaged or broken
- pushed slider with finger and turn the prop - gears are turning
- in "neutral" props are turning almost freely, but in gear(flipped the Eccentric piston disconnected from cable) they at some point come to almost "stuck" (very hard to turn)
if the engine is NOT running and I turn the eccentic in FWD position should I be able to rotate the props in BOTH directions?

I decided to remove props. Blocked props movement and tried to unscrew the bolt. After applying enormous effort the bolt started to move but together with the cone.
I decided not to continue and seek you help first.

While in the water I've tried to do shift cable ajustments but have achieved nothing.
Should I continue with removing the props? Or do more ajustments to the cable?
Or do I have to remove the Upper gear housing?

The boat is 1986 Bayliner Ciera 2750 Sunbridge with Volvo Penta AQ 280 DuoProp.

Please advise.

 

[PatinIdaho]

Copy past
Dear friends!
Need your opinion and advice.

Reverse didn't engage so I added some throttle an it did with quite substantial "kick".
If you wish to have your drive serve you for years and years...... NEVER....... NEVER...... NEVER do that again.

Engaged "forward", came back to marina at full speed and then...from "neutral" to "reverse" ot to "forward" - prop barely turning with "whining sound" no matter how much throttle .
Just taking a guess here..... you may have other issues.
Propeller barely turning and the whinning sound is not good!

Took the boat ouit of the water. Results of inspection:
- Shifter cable - not damaged or broken
Look closely at the shift cable clamp at the Intermediate housing.

- shift shoe - not damaged or broken
- pushed slider with finger and turn the prop - gears are turning and no damage
Please explain "slider" for me.

- in "neutral" props are turning almost freely,
Turning the props while in Neutral will rotate all three lower unit gears and all three shafts..... so you will feel some resistance.

but in gear(flipped the Eccentric piston disconnected from cable) they at some point come to almost "stuck" (very hard to turn)
If turning the props in the opposite direction of gear selection, and while the sliding sleeve is engaged into one of the gear cups, you will not be able to turn them any further.

Another "but": if I move props in opposite direction just a little and move them back in "stuck" direction - they go freely to the next "stuck" feeling.
You may not be understanding the Cone Clutch and how it functions. If I am understanding you, what you describe is quite normal.

I decided to remove props. Blocked props movement and tried to unscrew the bolt. After applying enormous effort the bolt started to move but together with the cone.
The center locking bolt thread pitch and the thread pitch for the spinner (cone nut) are quite different. They will fight each other if you attempt to remove both simultaneously.
Remove the center locking bolt, then remove the spinner.

I decided not to continue and seek you help first.

The boat is 1986 Bayliner Ciera 2750 Sunbridge with Volvo Penta AQ 280 DuoProp.

Please advise.

 

[MyBayliner28]

Patinidaho, I'm copying my questions because I didn't get any answer except "Propeller barely turning and the whinning sound is not good! ". Really?!

Why did you pasted the same text here with nothing new to add - a mistery to me. But then again, maybe that's you role here - show everybody that you can use Google?

 

[PatinIdaho]

My point is. Try reading the original post you started. You have the VP expert there trying to help you and has already given you some info you should look into.

 

[MyBayliner28]

Ok.
I'm trying to get any(!!!) number of resources available to fix the problem.
So, do YOU, sir, have your own opinion on the matter?
For example:
I took out the eccentric mechanizm, to see sliding sleeve and FWD/RVS gears.
If I turn the prop I can see the vertical shaft turning. So the lower unit transfers the movement to upper gear box.

if the engine is NOT running and I turn the eccentic in FWD position (or I move the sliding sleeve to the position of engagement with FWD gear with my finger) should I be able to rotate the props in BOTH directions?

Because it is my understanding, that if the answer is NO, then I have to deal with the upper gear housing and the gear that sits on the U_Joint.

 

[PiratePast40]

One option, and this is if you're lucky, you may have cracked or damaged the splined sleeve connecting the lower shaft to the gearbox. Without any load, it may allow the prop to turn the gears, but once you put a load on it, the sleeve may open up and allow the shafts to slip. You can pull the upper gearbox to check.

 

[MyBayliner28]

Thank you for response.
I'll start with upper gear unit removal and inspection this weekend - the marina is an hour away.

 

[PiratePast40]

There are plenty of threads here with instructions on removing the gearbox. Would be a good idea to go through them to get a good idea of what to expect such as tools and techniques, and gaskets/o-rings required. It's not rocket science, just that some methods are less painful than others.