ahead headset bearings

geepeetee said:

Hi

Just had to take up a little play on the headtube of my trek hybrid. It
doesn't have bearings but an unfamiliar bush type arrangement, do these need
greasing periodically or replacing or are they service free?

thanks

Gary

Errm, bet it does have bearings....
http://www.bikemagic.com/news/article.asp?uan=3057 gives you some clues
as to where they live and how to adjust them.

geepeetee said:

Hi

Just had to take up a little play on the headtube of my trek hybrid. It
doesn't have bearings but an unfamiliar bush type arrangement, do
these need greasing periodically or replacing or are they service
free?

If you have cartridge bearings, these are intended to be maintenance free
and eventually replaced, but, depending on the model, you may be able to
remove the seal and add more grease. There's a danger of making it worse
though.

Examples:
http://images.google.co.uk/images?svnum=10&hl=en&lr=&q=headset+cartridge+bearing

Adjustment instructions:
http://www.parktool.com/repair/readhowto.asp?id=65

~PB