CL77 Speedo Drive and Cable

[jensen]

Hi,

It all depends on the mileage of the bike, and the rust formed underneath the oil (grease) seal and your personal preference. When the seal is damaged it's good to replace it with a new one, it's never wrong to clean it thoroughly, and put new grease in it.

There are more assembly's on the CB72 / CB77 which, not really necessary, could be taken apart, but I feel better to know what the condition is, so I take it apart anyway, and it's a nice opportunity to renew the grease. When finished I never have to take them apart anymore.

These assembly's are :

speed / rev counter
starter relay
winker relay
starter motor
tail light assy
front and rear hub

Never the less, one could do without disassembling this assembly's when working good,

Jensen

[davomoto]

I had one where the spring from the seal managed to find its way into the gears. It did require complete disassembly to get all of the debris out. It also makes it easier to do a really nice pollish job on the drive unit, and the brass plug. I like to diassemble and regrease them on all of my restos.

Davo

[jleewebb]

On my bike the thin thrust washer (shim?) (only one in my case) under the drive gear was pretty much demolished, probably from past mis-installation of front wheel...so the dogs in the drive gear didn't stick out enough to engage the cutouts in the wheel hub...luckily the feller helping me out had spares, it worked great after cleaning, lubing, reassembling with two newer thrust washers. Just my own experience, for what it's worth. --Lee