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<DIV>It isn't necessary to first disassemble the piston and rod. After removing
the sleeve, move the piston to near TDC, slip an allen wrench behind the
rod and work it off the crank pin. Rock the crank slightly and the rod will come
off the pin. BUT, if you can't do that for some reason, then proceed with what
Keith says.</DIV>
<DIV> </DIV>
<DIV>One thing that should not be done is to tap the bearing races to seat the
bearing. Tapping the wrong race will oftern score the balls and will cause
premature bearing failure. </DIV>
<DIV> </DIV>
<DIV>MattK</DIV>
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<DIV><FONT face=Arial size=2>The biggest trick on the Webra 1.45 is removing
the wrist pin from piston in order to remove the connecting rod. If you never
done this it's helpful to know the following trick. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Remove the sleeve and position the piston so the
wrist pin can be seen through the exhaust port. You'll see a wire retaining
clip that seats into a groove in the wrist pin hole. This clip keeps the wrist
pin from slipping out. Use pliers to remove this wire clip. Then take one of
the bolts that are used to hold the head on the motor and thread that bolt
into the end of the wrist pin. This will allow you to pull the wrist pin out.
Hope that was clear, it's really better to demonstrate.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Also, to add to what Don said, before putting the
crank case in the oven remove all other components including the carburetor
and the crank shaft from the crank case. Then when putting the bearings back
in I always slide the bearings onto the crank shaft first and then take the
heated crank case out of the oven and use the crank shaft to slide the
bearings in place. This helps keep them from getting in there a bit crooked.
But I guess there's more than one way to skin the proverbial cat.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Keith</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=mailto:dszczur@maranatha.net
href="mailto:dszczur@maranatha.net">Don Szczur</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=mailto:discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A
title=mailto:NVRC-List@yahoogroups.com
href="mailto:NVRC-List@yahoogroups.com">NVRC-List@yahoogroups.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, October 17, 2004 8:49
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Webra 145 SS bearing</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Randy, you must not have gone through home-ec
in high school. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Put the crankcase in the oven, bake
it for 15 minutes on 250. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>While the engine is baking, put the new set of
bearing on ice and let them marinate at 32 degees or so in the freezer- 10
minutes should work.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Don't forget to use your oven mits when you
take the crankcsase out.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Pull out the bearings with a pair of needle
nose pliers. Put the engine back in the oven and bake for another 15
minutes.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Pull out of the oven, take the bearings out of
the freezer, and slip them in. You should hear them go Flop. And slip
right in and seat at the front of the crankcase.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Sip a glass of hot chocolate as the engine
cools down. Re assemble. Fly.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Don</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=mailto:randy10926@comcast.net
href="mailto:randy10926@comcast.net">Randy</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=mailto:discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A
title=mailto:dszczur@maranatha.net href="mailto:dszczur@maranatha.net">Don
Szczur</A> ; <A title=mailto:NVRC-List@yahoogroups.com
href="mailto:NVRC-List@yahoogroups.com">NVRC-List@yahoogroups.com</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, October 17, 2004 7:02
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Webra 145 SS bearing</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>The new SS bearing came in from the freindly
bearing maker. They look really nice. So how hard is it to
change the rear bearing in a Webra145?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial
size=2>Randy</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></FONT></BLOCKQUOTE></DIV>
<DIV></DIV>
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