Your videos always come to the rescue when I need them! I’m disassembling a OS70 and got stuck here wondering how to remove the cam bearings. A quick google search and found this video and the one that you used wax. Thanks for your hard work on making this videos.
Thanks David for allow comments and what an amazing tip. I’ve a few OS and was always glad I didn’t have to replace these bearings but now thankfully I know how should I need to.
And I have now finally needed to replace a cam shaft bearing just tonight and I can confirm, it does work. You need small pieces of paper and don't roll them up too firm otherwise they can not 'flow' under the bearing, but yes it works. Just takes time. Took me in total almost an hour to get the bearing out of the crank case.
@@dmrcflyr2 I made a tool from a rivet clamp, you know the screw clamps to hold panels in position when riveting. I ground the end off it and it hooked into the inner race and clamped into position. The engines I had were stuck solid, so the bearings took some heat and a bit of force to remove. Once cleaned up, they were fine..
Wow! That’s some great tricks of the trade to get those bearings out. I would never have thought of that approach to bearing removal. Just got schooled by the glow engine guru!
I have the same motor that had the same problem but only worse. It looked like it had been run one time then put away wet and left for 40 years. It took weeks to get apart. The followers were rusted so bad they were completely stuck. The cam was pitted and the main bearings shot. The cam bearings were crappy but useable. Thanks for the video, now I know how to change them! Funny thing was in the 18 months for eBay to find me a new cam, Tower had one that fit the car version of this motor. That was a fun, it made more power but idled like a Harley.
OK I learned two things. First one has to be impervious to pain and second, use moist paper balls pressed into the bearing cavity using a punch along with oil, heat and most importantly patience to remove the bearing. And I was under the impression that there was a bearing puller for this sort of a thing. Nicely done.
Potentially. There is a cam shaft bearing in the front of the engine that is deep inside the crankcase. The one on the rear cover comes out pretty easily with heat and slapping it on a piece of wood. I do not recall using this method on the twins that I have serviced. Those bearings may have just come out a different way, but I do not recall. Watch the videos where I service some OS/ASP/Magnum twins, maybe you will see it in there or I state what i did.
Your videos always come to the rescue when I need them! I’m disassembling a OS70 and got stuck here wondering how to remove the cam bearings. A quick google search and found this video and the one that you used wax. Thanks for your hard work on making this videos.
Thanks David for allow comments and what an amazing tip. I’ve a few OS and was always glad I didn’t have to replace these bearings but now thankfully I know how should I need to.
And I have now finally needed to replace a cam shaft bearing just tonight and I can confirm, it does work. You need small pieces of paper and don't roll them up too firm otherwise they can not 'flow' under the bearing, but yes it works. Just takes time. Took me in total almost an hour to get the bearing out of the crank case.
Brilliant method to remove the bearings. I always struggled with these Thanks..
Now I am curious. You say you have struggled with these in the past. How did you remove them? Did you make a special tool?
@@dmrcflyr2 I made a tool from a rivet clamp, you know the screw clamps to hold panels in position when riveting. I ground the end off it and it hooked into the inner race and clamped into position. The engines I had were stuck solid, so the bearings took some heat and a bit of force to remove. Once cleaned up, they were fine..
Wow! That’s some great tricks of the trade to get those bearings out. I would never have thought of that approach to bearing removal. Just got schooled by the glow engine guru!
Wow David. Yet another great tip to help us keep our engines running strong. Thank you again for all your help.
I have the same motor that had the same problem but only worse. It looked like it had been run one time then put away wet and left for 40 years. It took weeks to get apart. The followers were rusted so bad they were completely stuck. The cam was pitted and the main bearings shot. The cam bearings were crappy but useable. Thanks for the video, now I know how to change them!
Funny thing was in the 18 months for eBay to find me a new cam, Tower had one that fit the car version of this motor. That was a fun, it made more power but idled like a Harley.
OK I learned two things. First one has to be impervious to pain and second, use moist paper balls pressed into the bearing cavity using a punch along with oil, heat and most importantly patience to remove the bearing. And I was under the impression that there was a bearing puller for this sort of a thing. Nicely done.
Nice one David
Hi Dave, do you think the 40 crankshaft will be compatible with the 52?
Unless they have the exact same part number I would not think they are compatible.
I'm getting ready to change the bearings in an FT-300. Should I expect to have to use this method?
Potentially. There is a cam shaft bearing in the front of the engine that is deep inside the crankcase. The one on the rear cover comes out pretty easily with heat and slapping it on a piece of wood. I do not recall using this method on the twins that I have serviced. Those bearings may have just come out a different way, but I do not recall. Watch the videos where I service some OS/ASP/Magnum twins, maybe you will see it in there or I state what i did.
You can use bread instead of paper towel...
What's the difference? I am sure you could use a lot of different things, but why someone would use food is beyond me.