Rear Hub and Cogset

"Michael_jd" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

I got some dirt into my rear hub; now it makes a nasty grounching sound
when
it is turned backwards. I have decided to take it apart myself to fix it.
I
have some instructions for the dismantling of a Hyperglide rear hub, which
my
book says is the most common type. How can I tell if I have a Hyperglide
rear
hub? I have a Uniglide chain, a Acera X rear deraillieur, and a GT
Outpost
Trail bike, brought in 1999.

Just take everything apart and lay it out on a towel EXACTLY the way it came
apart. Clean and repack bearing and then put it back together in a linear
fashion. Keep in mind that you might not get the right tourqe on the
bearing cups the first time so be aware of that when you ride it again.
Stop and check to see if it is coming loose a few times especailly after
rock gardens and or jumps.

"Michael_jd" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

I got some dirt into my rear hub; now it makes a nasty grounching sound

when

Quoted message said:

it is turned backwards. I have decided to take it apart myself to fix it.

I

Quoted message said:

have some instructions for the dismantling of a Hyperglide rear hub, which

my

Quoted message said:

book says is the most common type. How can I tell if I have a Hyperglide

rear

Quoted message said:

hub? I have a Uniglide chain, a Acera X rear deraillieur, and a GT

Outpost

Quoted message said:

Trail bike, brought in 1999.

The outpost trail is an inexpensive model and it's very likely that it will
have the cheaper, screw-on type freewheel. This is OK in itself but
servicing it is different to a cassette hub.

Have a nosey round on www.sheldonbrown.com and you'll probably find the
answer.

Andy Chequer

"Michael_jd" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

I got some dirt into my rear hub; now it makes a nasty grounching sound

when

Quoted message said:

it is turned backwards. I have decided to take it apart myself to fix

it. I

Quoted message said:

have some instructions for the dismantling of a Hyperglide rear hub,

which my

Quoted message said:

book says is the most common type. How can I tell if I have a Hyperglide

rear

Quoted message said:

hub? I have a Uniglide chain, a Acera X rear deraillieur, and a GT

Outpost

Quoted message said:

Trail bike, brought in 1999.

If you have a freehub (probably) hub, not a freewheel, and it's grunching
only when pedaling backwards (not when wheel is just turning), then you
have [censored] in the freehub bearing. You have to pull the axle out anyway, so
repack the regular axle bearings. To clean & relube the freehub you have to
remove the freehub body. This requires a 10mm (big!) allen wrench. After
you get the FHB off, rather than disassembling it (you can, but it's a
PITA, with ~40 tiny balls), pry off the rubber o-ring on the back & flush
out the bearing with solvent, then dry & lube with heavy oil.

It's sometimes (usually) easier & cheaper just to buy a new rear hub &
swipe the cones, balls & FHB off it & rebuild the existing hub, keeping
just shell & cups. That also gives you a spare Q/R & axle. You can usually
find Shimano rear hubs mail-order for $20-25, so screwing around with old,
worn parts is generally not worth it.