>>>>> shazzbat wrote:
>>>>>> I recently acquired a ****mano mountain bike. I've replaced the
bottom
>>>>>> bracket and it's bearings and now turned my attention to the rear
>>>>>> wheel which had a lot of play in it. It's a 26" wheel and has a set
of
>>>>>> 6 sprockets attached. Removing the spindle, I found it to be deeply
>>>>>> scored and the cone on the sprocket side badly mangled. Getting a
new
>>>>>> spindle and cones isn't a problem, but it seems to me there's
probably
>>>>>> something missing from the set-up, as there's a big gap between the
>>>>>> cone and the housing, so even when I refit the spindle, cone and
>>>>>> bearing balls, it's not going to take up the play. When I took it
>>>>>> apart, the balls were around the outside with enough room for the
cone
>>>>>> to pass right through. Is there somewhere I could check out a
diagram
>>>>>> online to see what's missing?
>>>>>> And how is the group of sprockets removed? Not that I need to right
>>>>>> now, but I'd like to know for future reference.
>>>> "A Muzi" <am@[EMAIL PROTECTED]
> wrote
>>>>> Most probably a freewheel hub, although possibly a cassette system.
>>>>> Either would have a cracked or eroded right side dust cap if it was
>>>>> ridden much with a bearing problem.
>>>>> Freewheels remove with a tool which holds the inner body and are
>>>>> specific to the freewheel model. Cassettes of that era disassemble
by
>>>>> unscrewing the small gear. Either a more thorough description or a
>>>>> consultation with a competent LBS would be helpful.
>>>>> Do clean and inspect the cup inside the hub before going much
farther.
>>>>> If it was ridden loose for a while you may have damage there, the
>>>>> bearing diameter being much larger after the cup erodes or cracks. I
>>>>> couldn't tell from your description if it was a bearing cup problem
or
>>>>> a missing dust seal.
>>> "shazzbat" <shazzbat@[EMAIL PROTECTED]
> wrote
>>>> Many thanks for that. I think there may be both a cup problem and a
>>>> missing dust seal. Mine is more like the one here -
>>>> http://bernd.sluka.de/Fahrrad/****mano/TM/FH-MJ10-6NT_1994.gif
>> shazzbat wrote:
>>> Right, I've put some pics here -
>>> http://s163.photobucket.com/albums/t282/shazzbat3/bike%20stuff/
>>> I'm now not convinced that the cup for the bearings is there, there's
>>> certainly far too much room for the balls and the cone.
> "A Muzi" <am@[EMAIL PROTECTED]
> wrote
>> Yes, that's a UG freewheel. The removal tools is cheap and ubiquitous
but
>> get a service manual! (online or dead trees, whatever). We can't see
any
>> detail on the cones (you should look closely) and you can't see the
right
>> side cup yet.
>> There's no indication yet that anything is awry.
shazzbat wrote:
> Something is definitely wrong. Today I put 9 balls in, poking them
through
> the freewheel with a finger, and sticking them in place with grease.
Then I
> reversed the cone on the spindle to put it in blunt end first, and it
sits
> inside the ring of balls. I'm going to the bike shop tomorrow to get the
> spindle and cones, so I'll take the wheel with me to see what they say.
> Could it be relevant that whereas the freewheel is marked "****mano
> Singa****e", but on the other side the outer surface of the cup is marked
> "grimeca Italy"?
> And could it be the case that the freewheel side needs larger balls than
the
> other side?
You can't adequately clean the right side cup, nor inspect it, without
getting the freewheel out of the way. Do that first.
Whether your freewheel was made in Singa****e or made in Osaka or made in
Milano is irrelevant. Remove it from the hub before you proceed.
Grimeca makes moped brakes.
??
--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971
** Posted from http://www.teranews.com
**
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