[C320-list] Perkins M30 Oil Change last drops - WARNING

[George Hunt]

Pat

You replace the plug with a fitting to allow suction from the bottom.  
Then you have gravity to assist, and you are not relying on suction from 
the top of the dipstick, or from whatever level you manage to reach with 
a flexible tube.  As I am sure you know, the Perkins has a bend in the 
dipstick tube, so it is difficult to tell when you are at the exact 
bottom.  When it hits the warm oil, a flexible tube tend to curl up away 
from the bottom.

George


Pat Moriarty wrote:

> George
>
> Does the plugged tube coming from the sump do a better job of oil 
> draining?
>
> Pat
>
> At 08:37 AM 5/4/2006, you wrote:
>
>> Folks with the Perkins engine,
>>
>> Please read, this is a serious issue.
>>
>> I no longer have my Perkins, had to repower with a new Yanmar, because
>> (and I want to whisper the following, because I can't believe how stupid
>> I was) I ignored the problem of getting ALL the old oil out.  I
>> religiously changed the (hot) oil and filter about every 50 hours (I had
>> about 900 hours total on the old engine).  But I always had trouble
>> finding the exact bottom of the sump, and left some oil behind.  Even
>> though I knew there was as much as a quart left behind, I figured the
>> nice new stuff would mix with the old and obviate any problems.  The
>> post-mortem on the engine showed a jelly-like sludge at the bottom, and
>> internals destroyed from lack of lubrication.  The poor old engine often
>> tried to tell me it was in trouble, but the symptoms mirrored the
>> problems many folks have had with fuel filters (slow loss of RPMs.)  I
>> lost count of how many times I changed fuel filters, almost always back
>> in port for obvious reasons.  The now cooled off engine always revved up
>> like a champ, convincing me I had solved the problem again.
>>
>> I believe the real solution is relatively simple:  Don't rely on a tube
>> thru the dipstick to change oil on the Perkins!!  Back in the days when
>> we all had Perkins engines, there was a lot of conversation about how to
>> add oil change systems at the drain plug on the bottom of the engine.
>> Some folks replaced the plug with a barbed fitting to accept a hose.  At
>> least one put in an automatic system.  But the point is, drain the oil
>> from the bottom, and if you still can't get it all out, talk to a
>> mechanic about kerosene rinsing, before it's too late.
>>
>> Good luck,
>> George Hunt
>> REPRISE   -  #215
>> Fort Myers, FL
>>
>>
>> Allan Field wrote:
>>
>> >Turn the boat upside down and give it a good shake...
>> >
>> >Seriously, what kind of pump are you using?  I have a self-priming 
>> (very
>> >important) pump that seems to do a good job although I'm not sure I 
>> know how
>> >to tell if ALL the old oil is out.  With a self-priming pump, I keep 
>> moving
>> >the wand part all around the bottom of the pan and stop when I don't 
>> see
>> >anything else coming up and the wand begins to cool due to lack of 
>> hot oil
>> >coming through.  I assume you are trying to pump hot - versus cold - 
>> oil.
>> >
>> >Allan S. Field
>> >Sea Shadow - #808
>> >Columbia, MD
>> >
>> >-----Original Message-----
>> >From: C320-List-bounces at catalina320.com
>> >[mailto:C320-List-bounces at catalina320.com] On Behalf Of A. R. Gates
>> >Sent: Thursday, May 04, 2006 12:44 AM
>> >To: C320-List
>> >Subject: [C320-list] Perkins M30 Oil Change last drops
>> >
>> >My dipstick hole oil extraction pump is not getting all of the old 
>> oil out.
>> >What else can be done by me?
>> >
>> >Rollie  #182
>> >
>> >
>> >
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>>
>>
>>
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