Mon, 20 Apr 1998 21:28:00 +0200
- Message No. 2667
>From: ms@mausd.gun.de (Marcel Sieling)
Subject: reasons for bearing failure
Hi !
Michael Dipper wrote:
>On Sun, 19 Apr 1998 Marcel_Sieling@d.maus.de wrote:
>
>> Measurements on my @ (RD07 dated April '94)
>> Distance in "Nabe": 124,5 mm Length of Tube "Z": 123,7 mm.
>> As you see, the inner tube is too short and therefore also a new
>> bearing will break after a short time.
>
>Similar values at my AT, too :-) I noticed and wondered about that, too,
>while changing the bearings. I think this is no particular difference at
>your AT, it is a general measure. Can anyone explain that ? Perhaps it
>is for easier dismounting of the bearing ? The Honda handbook tells you
>to move the inner "tube" a bit to the side to be able to knock on the
>bearing from the opposite side. This wouldn't be possible, if the tube
>would fit exactly. On the other hand the questions is, if the bearing
>gets really damaged by that pressure ? It is a ball bearing and the
>pressure from bike and driver may be even higher than that from the
>screwed axis ? But in a "better" direction ... ?
>
>You see lots of "?". Just out of my thoughts. Who knows the truth ?
>
>--- Micha ---
I was at my Honda dealer today. He agreed, that the distance in the
measurement can arise this bearing problem, but he would not give any
warranty... He said, that after 36000 km it is normal that bearings have to
be changed. He also stated, that an AT driver should change the sealing
rings on echa wheel after 15000 km, to preserve the bearings from getting
dirty and dry. I asked, why this is not part of the regular service. He did
not know an answer.
However, he recommended to lube the bearings regularly (at least every time
new tires are mounted) and to change the sealing rings every 15000km. I
will do so this time and I will insert new bearings to the rear wheel. The
front bearings are still OK, so why change them?
take care - Marcello.
PS: The new (longer) tubes made from stainless steel are already here on my
desk, the bearings (standard industry bearings from a friend) come tomorrow
and the sealings (from Honda) on wednesday. ;-)

dipper@normans.isd.uni-stuttgart.de