Volvo 280 - Broken locking screw - Susp. Yoke

[SubmarineSailor]

I searched the threads and can't seem to locate an answer to my dilemma, so... here goes.

I'm trying to remove the drive from the boat so I can rebuild it. My immediate problem is the locking screw for the shaft journal & suspension yoke broke. I have a picture with the screw still in the hole (to keep rain, dirt, etc. out).

The bolt broke at the point where the threads meet (or used to meet) the shaft of the bolt. The threaded part of the bolt is frozen in place, and I've been keeping the bolt hole filled with WD-40.

My question is, am I going to have to drill the broken part of the bolt out, or can anyone think of a less (possibly) destructive alternative?

Unfortunately, the guy we bought the boat from painted the entire outdrive with a nice HEAVY coat (or several coats) of white paint. I've got some paint remover gel on the shaft journals, but I think they might be frozen in place too.

If anyone has any experience with something like this, I'd really appreciate your advice.

Thanks,
Shannon

Also... If anyone can precisely identify my outdrive from the picture, I'd appreciate that too! I believe it's a 280 or a 285 type.

 

[captmello]

Re: Volvo 280 - Broken locking screw - Susp. Yoke

I can't tell what model outdrive it is since the exhaust outlet is the obvious giveaway. If the exhaust is the shape of an upsidedown triangle with a rubber flapper in it, then its a 270. If its flat and wide, its a 280.

I'm not sure what to say about the broke bolt. I guess if it were me, I'd try to drill out the center and install an easyout type of bolt extractor while heating the surrounding area with a torch. NOT too hot though.

Are you sure you need to remove the whole outdrive?

 

[SubmarineSailor]

Re: Volvo 280 - Broken locking screw - Susp. Yoke

Thanks for the reply Capt.
RE. removing the outdrive: I believe I do because when I opened the U-joint bellows, it was full (about 1 - 1.5 quarts) of rusty oil. I believe I need to replace the seal aft of the U-joint, and at the very least, inspect it. Also, we bent something, or damaged a bearing, and since it's (most likely) been an eternity since it's been overhauled, I figured I take the entire drive off and do everything in the garage.
I also want to strip all the paint off of the housings and spray them properly with a good marine enamel.
RE. exhaust tube: It's definitely not triangular. I downloaded the manual for the 280 through DP-C models, and it most closely resembles the AQ285-AQ285A models. It does have an electro-mechanical tilt, but I'm not sure about the power steering.
Thanks again for your help. I will probably end up drilling/extracting the bolt once the rain stops.

 

[captmello]

Re: Volvo 280 - Broken locking screw - Susp. Yoke

Well, good luck. I hope you can get it apart. It does sound like you need to have the upper gear box resealed. Keep in mind this involves reshimming in the double bearing box and bearing pre load measurements. If you're unfamiliar with those adjustments, I would recommend bringing the upper to a reputable VP mechanic familiar with the older Volvo outdrives.

Let use know how it goes.