Home » Public Forums » GMCnet » oil cooler adapter gasket (how much should it be torqued?)
| Re: [GMCnet] oil cooler adapter gasket [message #262029 is a reply to message #262013] |
Tue, 16 September 2014 09:22   |
rjw
Messages: 697
Registered: September 2005
Karma: 4
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USAussie wrote on Tue, 16 September 2014 02:10Richard,
I checked the bolts today and the 1" bolts extend 1/2" from the bottom of the adapter and the long bolt 3/8".
You can use these measurements to determine if you can get it off.
Rob,
I was told off line by someone who would know that it can be done with the manifold in place, but it is a tricky operation. You only have about an inch to play with and the orientation of the gasket is easy to mess up. My problems might have been caused by my not using lock washers for those three bolts when I finished putting the engine together before I installed it in the coach. Over time they loosened up causing the leak. It took 30,000 miles or so to do that. I was in a hurry to get it done and wonder now what else I screwed up during the install.
I need to get it done this week since I plan on leaving for Wisconsin on Sunday.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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| Re: [GMCnet] oil cooler adapter gasket [message #262036 is a reply to message #262029] |
Tue, 16 September 2014 10:25 |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma: -34
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Senior Member |
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Richard
If you have 30,000 miles on it I doubt you screwed up much else or you
would certainly know by now !
Mike n NS
On Tue, Sep 16, 2014 at 11:22 AM, RJW wrote:
> USAussie wrote on Tue, 16 September 2014 02:10
>> Richard,
>>
>> I checked the bolts today and the 1" bolts extend 1/2" from the bottom
> of the adapter and the long bolt 3/8".
>>
>> You can use these measurements to determine if you can get it off.
>
> Rob,
>
> I was told off line by someone who would know that it can be done with the
> manifold in place, but it is a tricky operation. You only have about an
> inch to play with and the orientation of the gasket is easy to mess up.
> My problems might have been caused by my not using lock washers for those
> three bolts when I finished putting the engine together before I installed
> it in the coach. Over time they loosened up causing the leak. It took
> 30,000 miles or so to do that. I was in a hurry to get it done and wonder
> now what else I screwed up during the install.
>
> I need to get it done this week since I plan on leaving for Wisconsin on
> Sunday.
>
>
> --
> Richard
> 76 Palm Beach
> SE Michigan
> www.PalmBeachGMC.com
>
>
> Coop Roller Cam 455, Howell TBI + EBL, 3.42 FD, Quadra Bag, Macerator,
> Manny Tranny etc.
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
I am not an alcoholic; alcoholics go to meetings.
I am a drunk; I go to parties !
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| Re: [GMCnet] oil cooler adapter gasket [message #262047 is a reply to message #262029] |
Tue, 16 September 2014 11:16 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Richard,
If you look in the Parts Book 78Z (reference provided in earlier email) you'll find there are no lock washers specified,
I reckon the gasket got crushed over time and you sprung a leak.
If it is possible to use a tiny bit of Permatex Black RTV on the both sides of the gasket that's what I'd do. The problem in doing
that is you have to be VERY careful not to use too much and have the RTV get into the oil stream as it could wind up in a lifter or
someplace else and cause a problem.
Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
USA '75 Avion - Double Trouble TZE365V100426
AUS '75 Avion - The Blue Streak TZE365V100428
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of RJW
Sent: Tuesday, September 16, 2014 9:22 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] oil cooler adapter gasket
USAussie wrote on Tue, 16 September 2014 02:10
> Richard,
>
> I checked the bolts today and the 1" bolts extend 1/2" from the bottom of the adapter and the long bolt 3/8".
>
> You can use these measurements to determine if you can get it off.
Rob,
I was told off line by someone who would know that it can be done with the manifold in place, but it is a tricky operation. You only
have about an
inch to play with and the orientation of the gasket is easy to mess up. My problems might have been caused by my not using lock
washers for those
three bolts when I finished putting the engine together before I installed it in the coach. Over time they loosened up causing the
leak. It took
30,000 miles or so to do that. I was in a hurry to get it done and wonder now what else I screwed up during the install.
I need to get it done this week since I plan on leaving for Wisconsin on Sunday.
--
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Coop Roller Cam 455, Howell TBI + EBL, 3.42 FD, Quadra Bag, Macerator, Manny Tranny etc.
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Dorman 917-036 was Re: oil cooler adapter gasket [message #265602 is a reply to message #260733] |
Fri, 07 November 2014 17:50 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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G'day,
I want to correct this email, when the P/N 2-231 were delivered I discovered that the dimensions were incorrect, the OD was too
large and I contacted PH again. I was told that the P/N 2-230 was the correct size. I ordered some and verified that the 2-230 does
fit correctly. Unfortunately I ran out of time in the USA to install one and leak check it. I did bring a number of them back to
Australia with me and will check it here.
However upon my return I noted that there was a strong gasoline smell in my workshop, turns out that one of the gas tanks had
corroded through and was leaking. I'll have to fix that before I can install and test the o-ring.
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Rob Mueller
Sent: Wednesday, September 03, 2014 8:03 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Dorman 917-036 was Re: oil cooler adapter gasket
Matt,
As promised I called Parker Hannifin today and spoke to an Applications Engineer. I gave him he ID / OD / Depth of the groove in the
oil cooler adapter and he came up with part number 2-231. He noted that it would fill 70% of the groove and have 18% compression. He
suggested when I call one of the PH distributors to tell them I wanted a general purpose O-ring compatible with engine oil at 260°
F. He noted that Viton would be better than silicone.
I then called a PH distributor here in Houston and their min order was $10.00 so I ordered 10 of them for $12.12. The distributor is
on the other side of Houston so I told him to ship them.
When they arrive I will check them in the oil cooler adapter I have here and photograph the result.
Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
USA '75 Avion - Double Trouble TZE365V100426
AUS '75 Avion - The Blue Streak TZE365V100428
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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