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Date: Mon, 10 Mar 2008 18:34:25 -0500
From: David Staten <Dastaten@earthlink.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Possible Causes : [FlyRotary] Re: Coolant leak
 - the teardown
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Tracy, the bearings I am speaking of are on the water pump side of the 
engine. The pilot hole is on the psru/prop side of the engine, isn't it?

That pilot bearing gave me fits to remove.. we had to dremel it and pry 
it out.. but it was all out to my knowledge.

Im pretty sure the end play was correct - I either talked to you or 
bruce on the phone a while back (2004?? 2005??) when we got to this 
stage because my end play was a little low - 2 or 3 thousands too 
tight.. and it was fixed by wetsanding the spacer (with the letter on it 
to denote size) for a bit to bring the end play into range (rather than 
ordering a new spacer)

I am guessing it happened with the pully swap months later.

The coolant issue confounds me though.

Dave

Tracy Crook wrote:
> The coolant leak is a mystery to me if none of the previous suggested 
> possibilities caused it.
>  
> The Thrust bearing thing bears more thought.  Lynn's point on the 
> redrive installation  is worth looking at closely.   This assumes you 
> are sure the end play was right before installing the drive.   BTW, I 
> once pinched a thrust bearing when changing to that Racing Beat 
> pulley.  I was trying to do it while engine was on the plane.
>  
> About the only thing that could go wrong is for the input shaft pilot 
> to have interference.  That hole in the crankshaft must be clean and 
> empty except for a dab of grease.   Are you sure there was no piece of 
> the pilot bearing (used with manual trans) in that hole?  Look for any 
> other possible debris in there before re-assembly.
>  
> Tracy
> .5.518 / Virus Database: 269.21.7/1323 - Release Date: 3/10/2008 11:07 AM
>