93Bandit
Forum Mentor
While I had the bike down for clutch repair, I figured I better check the valve lash. It's been ~6k miles since I last adjusted them, and I think the service interval is 5k miles so it's due anyways. Last time I adjusted them I think I had to reshim all but maybe 1 or 2 valves. This time I lucked out and only cylinder 3 intake and exhaust need adjusted. The exhaust was tight and intake loose, as expected.
Also while having the valve cover off and trying to work towards my no-more-oil-leaks goal, I decided it was time to address the broken tach drive. When I first bought the bike 6yrs ago, I had to replace the tach cable. Being unfamiliar with the bike, I though I had to remove the tach drive assembly in order to remove the cable. It was so caked in grime I didn't realize the cable just threads into the drive housing. As I tried to gently pry the drive assembly out of the head, I busted it in half. Not knowing what it would entail to fix and being in a hurry to get the bike back on the road, I decided to clean the area and use some RTV to seal it up temporarily. Fortunately the bolt tab did not break off so I was able to reinstall the exterior portion of the drive assembly. The RTV actually kept it leak free for ~6yrs but it's been leaking badly again. With some patience, heat and a little persuasion, I was able to get the tach drive assembly out of the head. Unfortunately in the process I ruined the gear shaft, so I won't be able to reuse it. I thats OK anyways though, since the old seal has worn a groove into the shaft. My goal is to fix what I broke and prevent oil leaks, so reusing the worn gear would only result in an oil leak. My oil complain is how expensive that assembly is! With the housing, gear and 2 seals the total comes to $80! Oh well, half of it is my fault for breaking the housing. Live and learn I guess. Here's a picture of the broken tach drive.

I am leaving on vacation next week, so I won't be able to get new parts installed for a few weeks. It's a real shame, the weather is beautiful this week, but I didn't want to put off these repairs any longer.
Also while having the valve cover off and trying to work towards my no-more-oil-leaks goal, I decided it was time to address the broken tach drive. When I first bought the bike 6yrs ago, I had to replace the tach cable. Being unfamiliar with the bike, I though I had to remove the tach drive assembly in order to remove the cable. It was so caked in grime I didn't realize the cable just threads into the drive housing. As I tried to gently pry the drive assembly out of the head, I busted it in half. Not knowing what it would entail to fix and being in a hurry to get the bike back on the road, I decided to clean the area and use some RTV to seal it up temporarily. Fortunately the bolt tab did not break off so I was able to reinstall the exterior portion of the drive assembly. The RTV actually kept it leak free for ~6yrs but it's been leaking badly again. With some patience, heat and a little persuasion, I was able to get the tach drive assembly out of the head. Unfortunately in the process I ruined the gear shaft, so I won't be able to reuse it. I thats OK anyways though, since the old seal has worn a groove into the shaft. My goal is to fix what I broke and prevent oil leaks, so reusing the worn gear would only result in an oil leak. My oil complain is how expensive that assembly is! With the housing, gear and 2 seals the total comes to $80! Oh well, half of it is my fault for breaking the housing. Live and learn I guess. Here's a picture of the broken tach drive.

I am leaving on vacation next week, so I won't be able to get new parts installed for a few weeks. It's a real shame, the weather is beautiful this week, but I didn't want to put off these repairs any longer.



