>>>Gary Henderson said to All<<<
 GH> I have a Trek 2100, with Shimano STI 105's as the gear/component
 GH> package. It's from 1994, and is approaching over 4,000 miles.  Other
 GH> then greasing/degreasing the chain and gears, I have done nothing with
 GH> the bearings, hub, etc.
Holy smokes Gary!  You have been LUCKY!
 GH> How often should the crankshaft bearings be replaced? Am I need of a
 GH> new chain? Do the sprockets on the rear wheel need to be replaced? 
 GH> What other maint should be done to keep the bike in tip-top shape?
Well I do my headset bearings every 2 seasons, my crank-bearings every
spring, and I have replaced one chain.  When your chain gets very worn
you will begin to notice poor shifting...that's when I look at a new chain.
I have about 4700 KM on my bike, and I have checked the hubs just recently
and they were still clean and un-worn.  However, I would get your rear cogs
looked at, as mine are nearing replacement.  The larger you are and the more
you use the smaller cogs--the sooner you will have to look at replacement.
 GH> I already have it planned for the shop to do an adjustment to the
 GH> gears and brakes and am wondering what else they should do at the same
 GH> time..
Get the crank bearings looked at for sure!  They are closest to the ground
and most likely to get mud/grit inside.  I once had my entire set of
crank bearings basically explode inside the casing.  I took it apart and
the bearings were all crushed and split.  It did such dammage to the bearing
races....I decided to get a new frame!  That was back when I used to think
maintainance was a luxury.  Lucky for me it wasn't a very expensive frame.
By the way...it would appear that you ride ALOT more than I, you may want
to preform maintainance more frequently.
Will
... ...Mongoose--Go on, take a ride...
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