Re: SPLITTING THE CASE
Posted by RodneyCB750K1979 on Apr 07, 2013; 6:31pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/SPLITTING-THE-CASE-tp4037806p4039041.html
After removing the generator rotor, the case halves came apart. I installed new shaft oil seals and cleaned the mating surfaces. I also cleaned material from the gear case bottoms. I applied a very thin coating of Hondabond to the mating surfaces. The main bearing caps appeared to have sealant at one time applied to their mating surfaces. I applied a very thin coating there also except near the inserts per the manual. I tried installing the lower half case but the shift forks wouldn't line up. After finding the problem, I tried installing again. The case at the back end lacked about 3/16 inch from full closure. I removed the case and checked all the shaft bearing seats and set rings. I tried again several more times and the back end of the case would not seat properly. During one try, a main bearing insert dropped out and became wedged nicking the surface. I was able to lightly scrape the nick smooth using a razor. After several more unsuccessful attempts installing the gear case half, I located the problem. The countershaft bearing has a hole that must fit over a small dowel pin in the bearing seat. After doing this, the case halves went together with no problem. I installed a few bolts finger tight and checked that all 5 gear positions worked. I then oiled all bolts and installed them and torqued per the sequence.
Replacing one oil seal required removal of a bearing.
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/SPLITTING-THE-CASE-tp4037806p4039041.html
After removing the generator rotor, the case halves came apart. I installed new shaft oil seals and cleaned the mating surfaces. I also cleaned material from the gear case bottoms. I applied a very thin coating of Hondabond to the mating surfaces. The main bearing caps appeared to have sealant at one time applied to their mating surfaces. I applied a very thin coating there also except near the inserts per the manual. I tried installing the lower half case but the shift forks wouldn't line up. After finding the problem, I tried installing again. The case at the back end lacked about 3/16 inch from full closure. I removed the case and checked all the shaft bearing seats and set rings. I tried again several more times and the back end of the case would not seat properly. During one try, a main bearing insert dropped out and became wedged nicking the surface. I was able to lightly scrape the nick smooth using a razor. After several more unsuccessful attempts installing the gear case half, I located the problem. The countershaft bearing has a hole that must fit over a small dowel pin in the bearing seat. After doing this, the case halves went together with no problem. I installed a few bolts finger tight and checked that all 5 gear positions worked. I then oiled all bolts and installed them and torqued per the sequence.
Replacing one oil seal required removal of a bearing.
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