Changing the fork oil on my '86 Concours and have run into an issue. Manual calls for 338ml of fork oil, which is supposed to equate to the oil 355mm down from the top of the fork tube, fully extended, spring removed. I carefully measured the 338ml and, just to confirm, I measured the depth to the oil. Turns out to be 415mm!!
I've done a bit of searching on the forum and haven't come across any threads suggesting a possible typo in the manual. I'm confident in both my measurements so my question is: Should I just increase the volume of oil to bring it up to the 355mm depth? Or drain what's in there and re-measure the volume?
Another thing I noticed, which has no bearing on the above, is that both my spring lengths are longer (531mm) than the standard spring length given in the manual (514mm). I'm a long way from being the original owner of this bike and know nothing of its previous service history. Just wondering if longer springs were a "thing" sometime in the past to address front end dive or other handling issues?
Any and all insights appreciated. Thanks.
Neil
I've done a bit of searching on the forum and haven't come across any threads suggesting a possible typo in the manual. I'm confident in both my measurements so my question is: Should I just increase the volume of oil to bring it up to the 355mm depth? Or drain what's in there and re-measure the volume?
Another thing I noticed, which has no bearing on the above, is that both my spring lengths are longer (531mm) than the standard spring length given in the manual (514mm). I'm a long way from being the original owner of this bike and know nothing of its previous service history. Just wondering if longer springs were a "thing" sometime in the past to address front end dive or other handling issues?
Any and all insights appreciated. Thanks.
Neil