SOHC.co.uk Forums > CB500/550

Rear Damper bottom bolt threads question?

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Laverdaroo:
Then get some kit together and catalogue it all up ready, nothing like a bit of progress, even if it is progress to start is always a lifter and good mind excersize mate. Dont bin it yet, you've done so much. ???

deltarider:

--- Quote from: Sesman on November 14, 2022, 12:36:07 PM ---Oh, exactly how many years have you owned that bike and how many miles/km?

--- End quote ---
Dunno if that question was directed at me. I own my bike since 1980 and it has done over 139.000 km now.

Sesman:
Sure was….wow, 1980 and 139k miles. That’s impressive. Any major mishaps along the way?

deltarider:
The camchain tensioner is the only part I really hate. It has already been replaced twice. Chain and tensioner will live for 40.000-50.000 km. The original primary chain is still OK. I have volunteered to see how long it will last. In all these years the bike has proved ultra reliable. Regular use is the best. I have knowledge of someone who was interviewed in an article. At that moment he had done 220.000km using his CB500K1 for daily commuting and his engine had not yet been opened. Plugcaps can cause problems due to their position, especially in the wet. Always start there when you have a problem.
 y model, the CB500K2-ED, aka CB500K2 GENERAL EXPORT was the last of the oldstyle CB500s. Assembled in 1976, it shares many parts with the CB550K2. If you study the parts list, you will see some parts underwent modification: gearbox (minor though), clutch adjuster, frontlegs, swingarm etc. Bike has done almost 140.000km. So far I didn't have to replace any fork seals, probably thanks to the harmonica rubbers. I've renewed the damper oil no more than 4 times max. I see no reason why you would do it more frequently. Clutch adjuster greased no more than two times, swing arm maybe 4 times, that is if I did manage to press it in >:(. If I didn't, it's been less ;). Still no sign of wear. I have 4 new rubber boots (carb-head) ready in their packages, but I have no indication the originals leak. I change the oil every 3000-5000km* or every two years, which ever comes first. I don't do short rides. Oilfilter every second oilchange. Oil is not specified as JASO-MA. Actually, it's right on the edge. Never had the clutch slip. Clutch springs and friction plates were at the end of their lifespan at 75.000km and were replaced by genuine Honda parts. Most disappointing part however has been the camchain and its adjuster. I never seem able to do more than 50k with it. Costly! Primary chain has play, but I see no reason to replace. I know of someone who's bike at 220.000 km still had the original chain in. Front wheel bearings are still original, those in the rear have been renewed. Also I needed to replace the drive flange for a good second hand one. This because of the use of a socalled steamwasher which had removed essential grease. Don't use pressurized water! Splines of the kick arm shaft are worn. I think I've found the root cause and hope to publish on this soon.
Although the original rear shocks (5-stage on this model like the CB550K2) were not as bad as many say, I've replaced them nonetheless @ 50.000 by Dutch quality Koni's. They still serve well.
This is how it looks today. http://forums.sohc4.net/index.php/topic,190773.msg2219705.html#msg2219705

Johnny4428:
Very interesting assessment of a good old workhorse. These stats are impressive, just goes to prove that these bikes need to be used regularly rather than being tucked up in a shed. As mine is.😃

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