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M-14P chip detector

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Mozam

Joined: 24 Nov 2006
Posts: 85

Posted: Thu Oct 08, 2009 6:02 pm Post subject: M-14P chip detector

Hey Y'all,



The rubber material encasing the triangular shaped mounting surface of my M-14P oil sump chip detector is falling apart. It is not completely insulating the unit when attached.



As a result, I get a chip detector light on when at low power settings, i.e. less than cruise power. (There's another question: why only at lower power settings?)



Note: It is an electrical/insulation issue, not a chip issue, the unit is clean as a whistle...no debris in it at all.  I also have an ADC filter screen with a chip light (also clean as a whistle.)



Question: Is there some way to repair the rubber insulation on this thing, or am I forced to just buy a new one...and can one buy one...from whom?



Thanks,

Steve Dalton

dsavarese0812(at)bellsout
Guest

Posted: Fri Oct 09, 2009 12:53 pm Post subject: M-14P chip detector

Steve,

 You may try repairing the cracked rubber with a high temp  silicone/RTV sealant.  If you want to smooth out the sealant,  try dipping your finger into light weight oil and rub your finger over the  lumps to smooth it out.  Keep your finger wet with the oil though or you'll  still have lumps.

 Dennis

 [quote]   ---

desmor944(at)aol.com
Guest

Posted: Sat Oct 10, 2009 9:21 am Post subject: M-14P chip detector

Steve,

    

   In the power generating business, we use Glyptal as a spray or brush-on insulator for generator rotors, stators, busbars, and motor windings.  It is oil, grease and temperature resistant.  The product is a bit pricey, but it does work well.  If you cannot find it locally, it is available from The Eastwood Company (www.eastwood.com) as Item # 46001 ZP for brush-on or 4600 Z for the spray.  Several coats will be needed to build up the thickness, but I think this will work.  Insulating washers under the nuts would help prevent scratching through the coating on installation.

    

   A more readily available alternative might be Krylon 1385 Red Insulating Varnish, but I can't vouch for its durability.

    

   Hope this helps.

 

 

   Rich Desmond

 

 

 --

Mozam

Joined: 24 Nov 2006
Posts: 85

Posted: Tue Oct 13, 2009 6:13 am Post subject: Re: M-14P chip detector

Thanks Dennis and Rich.  I already tried a quick RTV patch fix and complete cleaning/inspection, which helped some.  Next step is to remove it again and do a "thorough" RTV repair.



Question: Why do I have a "Chip" light with the engine shut off, but it goes out after start and warm up and RPM above about 1200?  It "appears" that increased oil pressure, which seems to make the light go out, is involved with this problem and not worn rubber insulation.  Anybody have any experience with this?



Thanks,

Steve

dsavarese0812(at)bellsout
Guest

Posted: Tue Oct 13, 2009 6:26 am Post subject: M-14P chip detector

About all I can think of is to make certain the two sections  of the chip detector screen are perfectly aligned and tight.  There are  some "disks" between the two sections and if they are loose, will allow the chip  detector screen in the rear section to shift around.  Make certain the  nut on the front of the chip detector at the center of the end with the rubber  insulation is tight.  A loose nut here will cause the looseness in the two  sections.  This can cause an erroneous and intermittent chip light to  come on.

  

 Carefully inspect the wiring from the chip detector  screen back to through the baffling and firewall.  Any intermittent ground  on this wire will cause the chip light to come on.

  

 Lastly, try replacing the chip detector screen assembly and  see if the problem disappears.

  

 Let us know what you find.

 Dennis

 [quote]   ---

Mozam

Joined: 24 Nov 2006
Posts: 85

Posted: Tue Oct 13, 2009 6:41 am Post subject: Re: M-14P chip detector

Thanks Dennis, I'll keep ya posted.



BTW, if I need to replace this chip detector who has one?  Doug?  Jill?



Cheers,

Steve

valleyauto(at)clearwire.n
Guest

Posted: Tue Oct 13, 2009 6:55 am Post subject: M-14P chip detector

Hi Steve



If you wan't a good sealant to use you might try Permatex Right Stuff Item #

29208 this is the best rtv gsaket stuff . Care must be taken when removing

the part after using this stuff it will seal anything, well almost anything.

---

dsavarese0812(at)bellsout
Guest

Posted: Tue Oct 13, 2009 7:35 am Post subject: M-14P chip detector

Don,

 Does this sealant cure to solid like other RTV or does it  remain soft and sticky?

 Dennis

 [quote]   ---

nc69666(at)aol.com
Guest

Posted: Tue Oct 13, 2009 7:40 am Post subject: M-14P chip detector

Steve,  Gary here in Las Vegas,, I have had a similar situation on my CJ with a Capacitance Fuel sending unit, it would indicate empty until I was at about 1200 RPM when the Alternator would come on line and then it would work ok , since then it has fixed itself, so Dennis's suggestion about a ground connection, or possibly B+ connection may have some resistance, may be a good thought... Just a thought..  Good Luck... Gary

  

 

 --

dougsappllc(at)gmail.com
Guest

Posted: Tue Oct 13, 2009 8:14 am Post subject: M-14P chip detector

Steve,No chip detectors in stock.

doug



On Tue, Oct 13, 2009 at 7:41 AM, Mozam <sdalton(at)hughes.net (sdalton(at)hughes.net)> wrote:

  	  Quote: 	
		  --> Yak-List message posted by: "Mozam" <sdalton(at)hughes.net (sdalton(at)hughes.net)>

  

 Thanks Dennis, I'll keep ya posted.

 

 BTW, if I need to replace this chip detector who has one?  Doug?  Jill?

 

 Cheers,

 Steve

 

 

 

 

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 http://forums.matronics.com/viewtopic.php?p=267742#267742

 

 

 

 

 

 

 

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-- 

 Douglas Sapp

Doug Sapp LLC

18B Riverview Road

Omak WA 98841

PH 509-826-4610

Fax 509-826-3644

 

  [quote][b]

valleyauto(at)clearwire.n
Guest

Posted: Tue Oct 13, 2009 8:19 am Post subject: M-14P chip detector

Dennis,

 It cures solid it sticks to any thing.

 ---

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