First, does anyone know a source for a new speedometer gear for a 1978 CVCC five-speed transmission? The last part number I have for it looks to be either 23820-657-680 or -810. Honda's exact name for it is "gear, speedometer driven". In the parts book it appears to have two possible part numbers.
Second, the speedometer housing has a pin that fixes the speedometer gear holder to the speedometer gear housing. How do I get those two apart so the oil seal on top of the holder can be replaced?
Thanks in advance for your anticipated assistance.

Ed Faggart
Lincolnton, NC