[Public-List] Problem with Universal M4-30

Tue Sep 13 07:38:22 PDT 2016

Eric, 
Get with the mfg. and locate the manual. Better yet get to a dealer who can provide a blow-up diagram of the engine to determine if the plug seals the cooling system or an oil gallery. Does the plug screw in? Screw in would be oil. Press in would be cooling system. 

The freeze plug is designed to pop out if the coolant freezes, thus no threads. (Sometimes due to age or corrosion the freeze plug will loosen and fall out on its own.) 

Oil pressure is far greater than coolant system pressure and requires a threaded plug to prevent oil leakage. (It is very unlikely that the tapered screwed in oil plug would loosen itself and fall out.) It is possible but not likely. Did you have small leaks from this area before the major oil leak? 

Michael #133 

----- Original Message -----

From: "Eric Chavigny via Public-List" <public-list at lists.alberg30.org> 
To: "alan schulman" <alan.schulman at gmail.com>, "Alberg 30 Public List -- open to all" <public-list at lists.alberg30.org> 
Sent: Monday, September 12, 2016 6:31:49 PM 
Subject: Re: [Public-List] Problem with Universal M4-30 

There is the same type of plug on the oil system, what I suspect is that there was water in the oil that have boiled out causing the the plug to release the pressure. I will do an oil change this weekend and inspect the oil for any trace of water. If there is, the next step will be to locate the source. 

> On Sep 12, 2016, at 17:41, n4lbl via Public-List <public-list at lists.alberg30.org> wrote: 
> 
> Frost plug would be for coolant, not oil. 
> 
> Alan 
> 
> On Mon, Sep 12, 2016 at 3:11 PM, Greg Hounsell via Public-List < 
> public-list at lists.alberg30.org> wrote: 
> 
>> I'll have to check the location but it sounds like a "frost plug" 
>> 
>> 
>> Sent from Samsung Mobile 
>> 
>> <div>-------- Original message --------</div><div>From: Randy Katz via 
>> Public-List <public-list at lists.alberg30.org> </div><div>Date:09-12-2016 
>> 4:29 PM (GMT-05:00) </div><div>To: A-30 List <public-list at lists.alberg30. 
>> org>, public-list-request at lists.alberg30.org </div><div>Subject: 
>> Re: [Public-List] Problem with Universal M4-30 </div><div> 
>> </div>Greetings, Eric, 
>> I have a Universal 3M-B diesel. The closest I've come to your experience 
>> was when my dipstick came out and oil was splashed all over into the bilge. 
>> (I think I maybe incorrectly replaced the dipstick, missing the actual 
>> tube it's meant to go in.) 
>> 
>> I'm unclear as to what plug on your engine came out. I've not had anything 
>> just fall off my engine like that. Was it something you'd loosened 
>> previously? 
>> 
>> Regards, 
>> 
>> Randy Katz 
>> Simple Girfts #249 
>> Bellingham/Seattle WA 
>> 
>>> 
>>> ------------------------------ 
>>> 
>>> Message: 2 
>>> Date: Mon, 12 Sep 2016 00:09:07 +0000 
>>> From: Eric Chavigny via Public-List <public-list at lists.alberg30.org> 
>>> To: "public-list at lists.alberg30.org" <public-list at lists.alberg30.org> 
>>> Subject: [Public-List] Problem with Universal M4-30 
>>> Message-ID: 
>>> <BLUPR11MB00195B3FCDBFA15D7BEB2A4FF9FF0 at BLUPR11MB0019. 
>>> namprd11.prod.outlook.com> 
>>> 
>>> Content-Type: text/plain; charset="us-ascii" 
>>> 
>>> Today we had an issue one of the plug (just behind the injector pump) on 
>>> the engine popping out and splashing a good amount of oil all over the 
>>> place. The engine did not over heat and I don't think there's any more 
>>> damage. 
>>> 
>>> I clean everything, reinstalled the plug, refill with oil. However not 
>>> knowing the cause of this plug or cap popping out makes me nervous for 
>> our 
>>> ride tomorrow. 
>>> 
>>> Anyone with experience with this type of problem? 
>>> 
>>> Thanks 
>>> 
>>> Eric 
>>> 
>>> Dimanche Matin #541 
>>> End of Public-List Digest, Vol 3341, Issue 1 
>>> ******************************************** 
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