Rescuing my Volvo after 3 years parked

[jbg]

The only other update I have at this point is that the crankshaft damper is out of the ERR process. It took off the rust and some paint. I think this is the best it's gonna get.

[jbg]

Hey gang,

I'm working on cleaning up the big 27mm bolt for the crankshaft damper. There is more of that very strong epoxy on the shank and on some of the threads. It's slow going cleaning this off without damaging the fine threads.

I've been Googling around but I cannot find the size of that bolt. I am thinking of getting an appropriately sized die to chase out all the debris and epoxy from its threads. Anyone know the size of the bolt?

Thanks.

[v8volvo]

Hmm. I wonder if the greenbook gives it? Otherwise no idea here, at least. Maybe a good fastener supplier could figure it out with measurements. I certainly would think it is a pretty irregular size. A die to match it would probably only have one job to ever do -- cleaning up D24/T crankshaft bolts -- and I would not be surprised if it were expensive....

What about a wire wheel on a bench grinder? I would not think the threads would suffer from that as long as you kept them parallel to the motion of the wheel and didn't go too nuts, no?

[ngoma]

Try heat. It should sizzle right off. Heat gun? Propane torch?

[jbg]

Originally Posted by ngoma

Try heat. It should sizzle right off. Heat gun? Propane torch?

Hey there's an idea! I'll need to dig out the propane bottle and nozzle. If I can find them I'll give it a try, thanks!

[jbg]

Going over my notes I plan to buy a new timing belt idler pulley. If I determine the existing pulley and its bearing are in good shape I'll keep the new one as a spare. The Greenbook says to use special tool 5202. I do not have this tool. In its place would a standard 3-jaw pulley puller work?

Thanks.

[jbg]

Originally Posted by v8volvo

Hmm. I wonder if the greenbook gives it? Otherwise no idea here, at least. Maybe a good fastener supplier could figure it out with measurements. I certainly would think it is a pretty irregular size. A die to match it would probably only have one job to ever do -- cleaning up D24/T crankshaft bolts -- and I would not be surprised if it were expensive....

What about a wire wheel on a bench grinder? I would not think the threads would suffer from that as long as you kept them parallel to the motion of the wheel and didn't go too nuts, no?

Yeah my thoughts were a die and a corresponding tap for the crankshaft snout. The snout is pretty gummed up and I really want an accurate torque rating.

I actually do not own a wire wheel on a bench grinder. But I do have a few wire wheels that mount into a drill. Perhaps I can try that. This epoxy stuff is very hard, like using a pick I really have to bare down on it to get the epoxy to chip off.