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Subject:Re: Blower motor anatomy
From:Karl Wolz
Date:Tue, 14 Dec 2010 10:35:51 -0700

Karl,

I remember your post on this procedure.  Do you have any photos, or exact
measurements of where to put the hole(s), angle of the spray tube, etc?

Karl Wolz

|-----Original Message-----
|From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
|Karl Mullendore
|Sent: Tuesday, December 14, 2010 8:32 AM
|To: vanagon@GERRY.VANAGON.COM
|Subject: Re: Blower motor anatomy
|
|The heater fan that I resurrected, still in the dash of the van, was the
|one
|where I discovered this 'easy way' of lubing the end of the fan motor that
|usually sees the most corrosion. This fan was stuck and had melted the
|switch. New switch, nothing happened. So I drilled the [3/8"] hole based on
|staring at and measuring an old heater assembly on the bench. I hung a
|small
|LED headlamp over the upped edge to illuminate the bearing, and then I
|delivered a dose of PB Blaster directly to the bearing via an extended
|tube.
|After an hour or so, I turned on the switch and thumped the dash hard a few
|time with my fist, and voila! - it started running. I then delivered a few
|small doses of Triflow to the bearing and that quieted things down to a
|nice
|purr.
|
|This is the story of the 'Mullendore Port'. Since then I've done a few more
|that weren't stuck, but this shows that some stuck motors can in fact be
|freed. Almost every stuck motor I have pulled has had only the exposed
|bearing stuck. Next time I remove one, I think I'll install a small tube
|that can be more easily located to deliver lubricant as general
|maintenance.
|It is rather odd that the manufacturer couldn't have just installed small,
|sealed ball bearings.