Want to keep a Restoration Log? Post it here! You can include photos. Suggested format: One Restoration per Thread; then keep adding your updates to the same thread...
-
sarals
- honda305.com Member
- Posts: 1014
- Joined: Mon Jun 25, 2012 9:19 pm
- Location: Monterey Peninsula, California
Post
by sarals » Wed Mar 20, 2013 6:33 pm
G-Man wrote:Sara
My CB77 motor was like that on both sides when I took it apart. JB weld should fix it as it is only holding the pins in place.
I used Aluminum solder on mine. My case had many more serious issues than that.
It's all in a day's fettling.......
G
Yes, it really isn't a setback at all, Graham! It was irritating, for sure, but lesson learned! A days fettling, indeed. What would Edd China do? ;)
1965 CB77 305 Super Hawk
1989 NT650 Hawk GT
1981 Yamaha XJ550 Seca
-
LOUD MOUSE
- honda305.com Member
- Posts: 7817
- Joined: Mon Aug 15, 2005 8:23 am
- Location: KERRVILLE, TEXAS
Post
by LOUD MOUSE » Wed Mar 20, 2013 8:30 pm
Remove the chip and punch the pin in.
You can't drive it all the way out without really messing things up. .........lm
sarals wrote:I just pulled everything apart. The knock pin was only partially driven up, the bearing was seated on it properly. Apparently the bearing was slightly off and then centered itself on the knock pin when I started tightening the crankcase nuts. That was enough to punch a hole in the casting, though. The chip it made is still attached at the top of the casting, the pin didn't push it all the way off. I'm going to have to drive the pin either out through the chip, or try to push the chip back down. I think it might be a better idea to go ahead and break the chip all the way off so I can clean the area and get some JB Weld on it, and then get the knock pin back into place.
I'm glad I caught this now and not when the engine was 90% complete. Careful as I was, it still happened. Let this be a lesson!
Last edited by LOUD MOUSE on Thu Mar 21, 2013 8:31 am, edited 1 time in total.
-
sarals
- honda305.com Member
- Posts: 1014
- Joined: Mon Jun 25, 2012 9:19 pm
- Location: Monterey Peninsula, California
Post
by sarals » Wed Mar 20, 2013 10:22 pm
Okay, that's what I'll do - thank you for that, Ed! I'll put some pictures up on here when I get the "operation" done.
Thank you again!
LOUD MOUSE wrote:Remove the chip and punch the pin in.
You can't drive it all the way out without really massing things up. .........lm
sarals wrote:I just pulled everything apart. The knock pin was only partially driven up, the bearing was seated on it properly. Apparently the bearing was slightly off and then centered itself on the knock pin when I started tightening the crankcase nuts. That was enough to punch a hole in the casting, though. The chip it made is still attached at the top of the casting, the pin didn't push it all the way off. I'm going to have to drive the pin either out through the chip, or try to push the chip back down. I think it might be a better idea to go ahead and break the chip all the way off so I can clean the area and get some JB Weld on it, and then get the knock pin back into place.
I'm glad I caught this now and not when the engine was 90% complete. Careful as I was, it still happened. Let this be a lesson!
1965 CB77 305 Super Hawk
1989 NT650 Hawk GT
1981 Yamaha XJ550 Seca
-
sarals
- honda305.com Member
- Posts: 1014
- Joined: Mon Jun 25, 2012 9:19 pm
- Location: Monterey Peninsula, California
Post
by sarals » Sun Mar 24, 2013 2:27 pm
Okay, I'm back to where I started when I was going to put the head on. I got a little confused with the copper washers used on the case nuts (there are four), and couldn't decide where two of them went. I still have them sitting in the bin.
I'm having a time with the starter clutch. For one thing, the starter gear race, the part that contacts the pawls, is fairly well galled and there's a pronounced ridge on it. I think it's going to need replacing. The next thing is, I c a n n o t, for the life of me, figure out where those little springs go in the starter clutch - do they live inside the holes in the casting, or do they go inside the knockpins, and then the knockpins go in the hole, with the bare end of the spring contacting the pawl (that seems not to work so well) - or do they go inside the knockpins, the free end of the spring into the casting holes, and then do the knockpins contact the pawls? In any event, I've managed to kink two of the little suckers, and that probably made them unusable.
Taking a breath...
;)
1965 CB77 305 Super Hawk
1989 NT650 Hawk GT
1981 Yamaha XJ550 Seca
-
LOUD MOUSE
- honda305.com Member
- Posts: 7817
- Joined: Mon Aug 15, 2005 8:23 am
- Location: KERRVILLE, TEXAS
Post
by LOUD MOUSE » Sun Mar 24, 2013 2:44 pm
free end of the spring into the casting holes, and then do the knockpins contact the pawls?
After I have the spring in the cap I install the spring in the hole and hold the cap in the hole with long tweezers and slip the roller in place.
Put the spring with cap into the hole and check for PUSH. ....lm
sarals wrote:Okay, I'm back to where I started when I was going to put the head on. I got a little confused with the copper washers used on the case nuts (there are four), and couldn't decide where two of them went. I still have them sitting in the bin.
I'm having a time with the starter clutch. For one thing, the starter gear race, the part that contacts the pawls, is fairly well galled and there's a pronounced ridge on it. I think it's going to need replacing. The next thing is, I c a n n o t, for the life of me, figure out where those little springs go in the starter clutch - do they live inside the holes in the casting, or do they go inside the knockpins, and then the knockpins go in the hole, with the bare end of the spring contacting the pawl (that seems not to work so well) - or do they go inside the knockpins, the free end of the spring into the casting holes, and then do the knockpins contact the pawls? In any event, I've managed to kink two of the little suckers, and that probably made them unusable.
Taking a breath...
;)
-
sarals
- honda305.com Member
- Posts: 1014
- Joined: Mon Jun 25, 2012 9:19 pm
- Location: Monterey Peninsula, California
Post
by sarals » Sun Mar 24, 2013 3:01 pm
Ed, sometimes I can be such a dummy! Seems pretty simple to me. Thank you, again - so much!
LOUD MOUSE wrote:free end of the spring into the casting holes, and then do the knockpins contact the pawls?
After I have the spring in the cap I install the spring in the hole and hold the cap in the hole with long tweezers and slip the roller in place.
Put the spring with cap into the hole and check for PUSH. ....lm
sarals wrote:Okay, I'm back to where I started when I was going to put the head on. I got a little confused with the copper washers used on the case nuts (there are four), and couldn't decide where two of them went. I still have them sitting in the bin.
I'm having a time with the starter clutch. For one thing, the starter gear race, the part that contacts the pawls, is fairly well galled and there's a pronounced ridge on it. I think it's going to need replacing. The next thing is, I c a n n o t, for the life of me, figure out where those little springs go in the starter clutch - do they live inside the holes in the casting, or do they go inside the knockpins, and then the knockpins go in the hole, with the bare end of the spring contacting the pawl (that seems not to work so well) - or do they go inside the knockpins, the free end of the spring into the casting holes, and then do the knockpins contact the pawls? In any event, I've managed to kink two of the little suckers, and that probably made them unusable.
Taking a breath...
;)
1965 CB77 305 Super Hawk
1989 NT650 Hawk GT
1981 Yamaha XJ550 Seca
-
sarals
- honda305.com Member
- Posts: 1014
- Joined: Mon Jun 25, 2012 9:19 pm
- Location: Monterey Peninsula, California
Post
by sarals » Sun Mar 24, 2013 5:02 pm
LM, that worked beautifully.
I was able to clean up the bearing surface on the starter clutch gear. The starter clutch assembly slides over it nicely, now. The only issue I have remaining is that the 15x20x30 seal in the gear is perished and there doesn't seem to be a replacement in the seal kit I have. I'll have to chase one down. It's always something.
Now to get brave, find TDC, and put the head on. I keep reading the horror stories from folks being one tooth off on the cam gear and all of the hassles that ensue from that. I don't want to have to endure that, so I'm going to check, double check, and triple check the cam timing before I button things up.
1965 CB77 305 Super Hawk
1989 NT650 Hawk GT
1981 Yamaha XJ550 Seca
|