Volvo aq270T gimbal bearing

[ChadAustin]

Question for anybody out there that has changed a 73 Volvo Penta 270 gimbal/ transom and intermediate bearing:
I’m working on a Frankenstein setup engine is merc 188 302 and out drive is a Volvo 270.
Problem started off with vibration at 2200 rpm and continued through 3300 rpm give or take. I pulled the out drive which is in very good shape, u drive moves freely no oil leaking bearing seems good at tail of drive shaft. But I can’t pull the inner or transom bearing. Does the engine have to be removed and bell housing opened up to access that bearing? Or am I overlooking something simple.
Any suggestions would be helpful

 

[Scott Danforth]

There is no gimbal bearing in the AQ drive

There are bearings in the PDS

Here is a link to me changing a 290 BDS shaft and bearings

PDS shaft issues

Replacing the bearings on my PDS shaft i discovered a few things... At some point, there was water in with the bearings. Cleaning the shaft, i found a crack Now to find another PDS shaft. VP pn 853809 or the earlier one 853081 (same shafts, different suppliers)

forums.iboats.com

However your PDS may only have one bearing. Check the factory service manual

 

[ChadAustin]

There is no gimbal bearing in the AQ drive

There are bearings in the PDS

Here is a link to me changing a 290 BDS shaft and bearings

PDS shaft issues

Replacing the bearings on my PDS shaft i discovered a few things... At some point, there was water in with the bearings. Cleaning the shaft, i found a crack Now to find another PDS shaft. VP pn 853809 or the earlier one 853081 (same shafts, different suppliers)

forums.iboats.com

However your PDS may only have one bearing. Check the factory service manualthat drive shown in the link

There is no gimbal bearing in the AQ drive

There are bearings in the PDS

Here is a link to me changing a 290 BDS shaft and bearings

PDS shaft issues

Replacing the bearings on my PDS shaft i discovered a few things... At some point, there was water in with the bearings. Cleaning the shaft, i found a crack Now to find another PDS shaft. VP pn 853809 or the earlier one 853081 (same shafts, different suppliers)

forums.iboats.com

However your PDS may only have one bearing. Check the factory service manual

Thanks for the response Scott, on that drive shaft shown in the link I have 1 bearing fitted with a snap ring and inside that drive tube I have a bearing all the way to the transom just before the coupler. That inner bearing is what I’m having troupe getting out. I’ve looked and having a tough time finding the correct service manual for this outdrive. Forgive my ignorance of not knowing what PDS is.

Thanks for the reply

 

[kenny nunez]

If your PDS \flywheel housing is 1 piece there is a good chance there is only 1 bearing in the rear and it can be replaced without pulling the engine. Just hope that the PDS shaft is not rusted into the flex plate.
If there are 6 bolts going through the PDS housing into the flywheel housing then there will be 2 bearings and the engine has to come out. Same goes if the haft is rusted into the flex plate.
Try to post a picture of the housing behind the engine.

 

[ChadAustin]

If your PDS \flywheel housing is 1 piece there is a good chance there is only 1 bearing in the rear and it can be replaced without pulling the engine. Just hope that the PDS shaft is not rusted into the flex plate.
If there are 6 bolts going through the PDS housing into the flywheel housing then there will be 2 bearings and the engine has to come out. Same goes if the haft is rusted into the flex plate.
Try to post a picture of the housing behind the engine.

6 bolts, shaft comes out fairly easy I can get the first bearing and seal out 3 snap rings

 

[ChadAustin]

6 bolts, shaft comes out fairly easy I can get the first bearing and seal out 3 snap rings

 

[ChadAustin]

6 bolts, shaft comes out fairly easy I can get the first bearing and seal out 3 snap rings

Can’t post a pic some admin issue

 

[Scott Danforth]

Can’t post a pic some admin issue

Photo Tutorial (DEC 2017 UPDATE)

Photos in your posts is a little different in the new era of iBoats. The controls look the same, but don't quite work the way you're used to in the past. I'm illustrating here the way I know for sure to post images, and will update as this as I figure some of the other details out: NOTE -...

forums.iboats.com

 

[ChadAustin]

Ok I’ve tried to reduce the size so I need to post more to get approval no problem. I love this site so much good info on here thanks for the tips so far

 

[ChadAustin]

6 bolts, shaft comes out fairly easy I can get the first bearing and seal out 3 snap rings

Well I had to take a break from this but I’m back at it and ready to pull the engine this is the only picture it will upload lol not sure do I have to unbolt the bell housing cover in order to lift it out ?

 

[ChadAustin]

This is the only one that will stick

 

[Scott Danforth]

yes, you must remove the drive, then remove the clamp ring, and pull the PDS housing and motor out together

 

[Scott Danforth]

this is where a factory VP AQ series manual will be worth its weight in paladium

 

[ChadAustin]

this is where a factory VP AQ series manual will be worth its weight in paladium

I agree with that % but I can’t seem to find one I ordered a maintenance that dies cover some of it but doesn’t show exactly how to.

So out drive is removed
PDS removed
Are you saying the bearing housing/tube has to be pulled with the engine ?

 

[ChadAustin]

 

[ChadAustin]

That part circled in red it has to come out with the engine? from the engine side of the boat? cause I have about 1/2” of clearance before the pulleys hit the flooring, if so I guess I need to cut flooring, thanks for any help you can provide I appreciate it.
I’m looking for a shop manual but very limited out there since engine is merc and outdrive is Volvo

 

[Scott Danforth]

I agree with that % but I can’t seem to find one I ordered a maintenance that dies cover some of it but doesn’t show exactly how to.

So out drive is removed
PDS removed
Are you saying the bearing housing/tube has to be pulled with the engine ?

you have to call your local VP dealer. since the website only goes back to 2000 and the AQ series were only around until 1996

 

[Scott Danforth]

That part circled in red it has to come out with the engine?

yes

however once you pull the clamp and the donut, you can tip the motor up / sideways a bit.

otherwise you need 4" of clear space forward of the pulleys to try to separate the motor from the PDS in the boat, and you will never get them back together.

 

[ChadAustin]

yes

however once you pull the clamp and the donut, you can tip the motor up / sideways a bit.

otherwise you need 4" of clear space forward of the pulleys to try to separate the motor from the PDS in the boat, and you will never get them back together.

Beautiful I was Just thinking I can tip but I doubt i be able to put it back the same way lol
I found a manual but it’s gonna take 10-14 days.
1 question by Doughnut you mean the rubber orings around the transom tube inside and out? Then it should be free

 

[ChadAustin]

This correct ? There is a rubber gasket behind that plate