Sender: "Marvin Kaye" <marv@lancaironline.net>
To: lml@lancaironline.net
Date: Sun, 28 Nov 2004 15:10:12 -0500
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From: billhogarty <billhogarty@direcway.com>
Subject: TSIO550  Dipstick Info
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Here is some trivia that may come in handy  for TSIO 550 owners:

When my engine came back from prop strike overhaul, the dipstick had a 
problem.  When inserted and rotated to the locked position, it would pop 
back to the unlocked position every time...????...Ouch! - can't  run the 
engine like that!!!

The overhaul shop couldnt understand the problem however  the TCM 
factory mentioned that there was a convoluted washer under the gasket 
that could be the culpret.
When I removed the gasket, I couldnt see any washer but when using a 
magnafying glass, I could see a tiny line around the inside of the cap. 
If this was the washer, how to fix???

Since it appeared that the dipstick assembly was spotwelded together, I 
decided to drill  four evenly spaced 3/32 inch holes thru the top of the 
cap and then apply pressure thru the  holes, evenly around the spring, 
hoping to force it down into position.
But, as I completed drilling the first hole, there was a loud ":twang" 
as the spring reversed itself.  Problem solved!!!!!

I hope this trivia might save another builder a lot of time and 
frustration.  Regards,  Bill Hogarty

P.S.  Rebuilding N499R now 75% complete