Subject: Blind hole bearing puller
Author: Greg Bender
Date: Jan 27, 2005, 5:41 PM
Post ID: 1718288774
My OTC Blind Hole Bearing Puller (model number 4581) arrived today. When
I finished work, I headed out to the garage to pull a couple of bearings
from an old four speed transmission my Dad brought me a couple of weeks
ago. Specifically, I needed to pull the needle bearing and the output
shaft bearing (both located at the bottom of the transmission bucket -
nearest the front of the motorcycle. Both of these bearing are blind and
I was unsuccessful at getting them to fall out by heating the case in a
400 degree oven.
The needle bearing came out straight away. There is plenty of room for
the puller's arm to separate and get under bearing. No problem.
The ball bearing took a little longer because it has that funny shaped
washer beneath the bearing that has a cone shaped funnel in the middle
of it. The purpose of it is - I believe - to direct oil into the middle
of the output shaft. At any rate, I started off with the largest size
that would fit inside the inner race, but I couldn't get a good grip on
the race. The cone-washer prevented the puller's arms from going down
far enough to get a grip. The next size smaller one expanded plenty
enough for the arms to clear the cone-washer, but wasn't able to expand
enough to get a solid grip.
I messed around with the smaller one a while until I pretty much
convinced myself that it wasn't going to budge. On a whim, I switched
back to the larger one, and gently tapped down as I tightened. That did
it! It just cleared the cone washer and had a good grip. Four up-strokes
of the slider hammer later and the bearing was free.
I found this bearing puller on ebay for $99. I consider it of good
quality and I think it will serve me fine for many years to come given
the limited use it will see in my garage. I've included a link to the
OTC Tools website below, in case anyone is interested.
http://www.otctools.com/newcatalog/detail.php3?id=252
Regards,
Greg Bender
1971 Ambassador
2000 Quota
http://www.thisoldtractor.com/gtbender