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Date:         Mon, 7 May 2012 22:43:34 -0400
Reply-To:     "Chris S." <szpejankowski@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         "Chris S." <szpejankowski@GMAIL.COM>
Subject:      Re: Slow turnover when starting.
Comments: To: Ken Olsen <648.ken@GMAIL.COM>
In-Reply-To:  <vanagon%2012050718485222@GERRY.VANAGON.COM>
Content-Type: text/plain; charset=utf-8

That's very interesting indeed!

What is effective torque of a starting motor?

Chris.

Wysłane z iPhone'a

Dnia May 7, 2012 o godz. 18:34 Ken Olsen <648.ken@GMAIL.COM> napisał(a):

>> I'm pretty baffled. My 85' Westfalia waterboxer has been turning over >> slowly since I bought it several years ago, but it has finally got to the

>> point of stranding me. It is behaving like a low battery, but I think I >> have ruled that out. >> >> Symptoms: >> Turns over very slowly, sometimes stopping (or catching?) >> Runs fine when started. >> Battery voltage looks good. Jumping doesn't help. >> Voltage at starter matches battery. >> Turns over slowly with: >> - spark plugs removed. >> - fresh battery jumpered directly to starter. >> - WITH NEW STARTER INSTALLED! >> > > I'm thinking no one had the heart to break it to me. ITS THE MAIN BEARINGS! > > I dropped the engine and vowed to keep removing bolts until I found the > problem. It was taking about ~30 ft-lb to rotate the crank with spark-plugs > out, and still 10 to 20ft-lb with pistons removed. When I split the case, it > was quickly apparent the main bearing were in bad shape. I'm surprised this > motor was running all and should be thankful it got it self home in one > piece. > > I am now the proud owner of a precision German jig-saw puzzle, complete with > extra starter motor. Looks like a full rebuild is in order. Or, as my > youngest daughter suggested, we could tow the van around to the back yard > and make a playhouse / spare bedroom out of it.


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