Volvo Penta Duo Prop drive alignment on the older GM 350

[AKveps]

I have a 1981 Bayliner with a GM350 in it.
It has a Volvo AQ260 outdrive with a duo prop lower.

From reading an earlier thread on this forum, Don S pointed out that older setups like this one may have two bearings on the drive coupling shaft. How does one verify that this is the case? I dont have any markings on the engine.

I recently rebuilt the engine mounts and was wondering on the proper alignment of this engine, since it may have moved slightly from its original position.

Does the two bearing setup require a drive alignment or do the two bearings negate this requirement?
Can the shaft be pulled out without removing the engine?
Is there a good manual that covers this?


I ordered the drive alignment tool and have the parts ready to go, but Im not sure how to remove the shaft.
I have the Seloc manual, but it doesnt seem to cover this operation.

Thanks for any assistance in this area.

 

[Don S]

Re: Volvo Penta Duo Prop drive alignment on the older GM 350

I have a 1981 Bayliner with a GM350 in it.
It has a Volvo AQ260 outdrive with a duo prop lower.

From reading an earlier thread on this forum, Don S pointed out that older setups like this one may have two bearings on the drive coupling shaft. How does one verify that this is the case? I dont have any markings on the engine.

1. No such thing as a 260 outdrive, 250, 270, 275, 280 and on up, but no 260. AQ260 is a 5.7 Chevy engine, not a drive.
2. All AQ V8 engines had 2 bearings in the flywheel cover, makes it real easy. The single bearing housing on the V8's didn't come about until 94.

I ordered the drive alignment tool

The tool you ordered better look like this or you ordered the wrong thing.

I have the Seloc manual, but it doesnt seem to cover this operation.

Seloc and Clymers are a waste to start with, but you aren't going to find any manual explaining how to align something that doesn't get aligned like you think it does. Look at this thread. http://forums.iboats.com/showthread.php?t=303248&highlight=volvo+penta+alignment on how to align your type of setup.

Once we figure out which engine and drive you have, you can find the downloads to the oem service manuals for free at this link. http://forums.iboats.com/showthread.php?p=2360521#post2360521

 

[AKveps]

Re: Volvo Penta Duo Prop drive alignment on the older GM 350

Thanks again Don
The thread you referred to was a big help
I did order the wrong tool.
From a previous thread I believe that I have an SP-A, with a 280 (270?) and a duo prop Lower mounted to a GM 350

My serial number is 3102059007 (I believe)

I found the manual reference numbers from the Volvo website as suggested, but I can't seem to match them to your downloadable manuals
The publication numbers I have are
7796431
7796484
7731624

Are there matching manuals?

I will go through the manuals that look close in the AM and see where it takes me

Thanks again Don