Will.iam Posted February 23, 2021 Report Posted February 23, 2021 I got my governor back today and an A&P is going to help me install it. Looking at the mccauley installtion manual, it calls for Dow Corning #7 release compound grease. My A&P had never heard of it. Is there a substitute I can use? Aircraft spruce doesn’t even sell it. Amazon is out of stock, ebay is out of stock. No body seems to have this so i was wanting to know what did you guys use when you had to reinstall your governor? Can you just use simple vacuum grease? Aeroshell #22? Aeroshell #5? thanks. Will Quote
bfreelove Posted February 23, 2021 Report Posted February 23, 2021 https://www.digikey.com/en/products/detail/ellsworth-adhesives/7%20CMPD%20150G%20TUBE/11495013?utm_adgroup=Coating%2C Grease%2C Repair&utm_source=google&utm_medium=cpc&utm_campaign=Shopping_Product_Prototyping%2C Fabrication Products_NEW&utm_term=&utm_content=Coating%2C Grease%2C Repair&gclid=EAIaIQobChMIg9CxqPGA7wIVAR6tBh3sdwOzEAQYAiABEgJTzPD_BwE Quote
Raymond J1 Posted February 23, 2021 Report Posted February 23, 2021 On 2/23/2021 at 8:44 PM, Will.iam said: J'ai récupéré mon gouverneur aujourd'hui et un A&P va m'aider à l'installer. En regardant le manuel d'installation mccauley, il réclame la graisse de démoulage Dow Corning # 7. Mon A&P n'en avait jamais entendu parler. Y a-t-il un substitut que je peux utiliser? L'épicéa d'avion ne le vend même pas. Amazon est en rupture de stock, ebay est en rupture de stock. Aucun organisme ne semble avoir cela, alors je voulais savoir ce que vous avez utilisé lorsque vous avez dû réinstaller votre gouverneur? Pouvez-vous simplement utiliser une simple graisse à vide? Aeroshell # 22? Aeroshell # 5? Merci. Volonté Expand Today "Molykote 7", demolding agent. Quote
MISSILEFLYER Posted February 23, 2021 Report Posted February 23, 2021 I know several Governors I would like to “uninstall”...but I digress. 2 Quote
PT20J Posted February 24, 2021 Report Posted February 24, 2021 I saw that also, and my A&P never heard of DC-7 either. I looked it up and it’s basically a thicker DC-4. We just used DC-4. Skip Quote
carusoam Posted February 24, 2021 Report Posted February 24, 2021 What is it used for? Lubricating the seals before installing? Best regards, -a- Quote
MikeOH Posted February 24, 2021 Report Posted February 24, 2021 On 2/23/2021 at 11:45 PM, MISSILEFLYER said: I know several Governors I would like to “uninstall”...but I digress. Expand And, I'd happily skip the reinstall part of the process 1 Quote
Will.iam Posted February 24, 2021 Author Report Posted February 24, 2021 We r going to use DC#4 thanks everyone. One more question. Does anybody have a parts diagram of the governor install we need to verify the gasket part number and are there only one gasket or two separated by a plate like lycomings? Quote
PT20J Posted February 24, 2021 Report Posted February 24, 2021 On 2/24/2021 at 2:27 AM, Will.iam said: We r going to use DC#4 thanks everyone. One more question. Does anybody have a parts diagram of the governor install we need to verify the gasket part number and are there only one gasket or two separated by a plate like lycomings? Expand Check the engine parts catalog for the correct assembly. BTW, Lycoming IO-360-A3B6D uses the spacer but the -A3B6 does not. Skip 1 Quote
Will.iam Posted February 24, 2021 Author Report Posted February 24, 2021 On 2/24/2021 at 4:11 AM, PT20J said: Check the engine parts catalog for the correct assembly. BTW, Lycoming IO-360-A3B6D uses the spacer but the -A3B6 does not. Skip Expand Thanks but we are findibg that continental is not as parts friendly in showing a diagram as Lycomings. The A&P is very familiar with lycomings but not so much with continental especially the TSIO 360mb engine. Even a fellow a&p googling a search could not find a diagram of the parts assembly and mccauley install instructions only have words no pictures and doesn’t list part numbers so no way to verify the gasket is the correct one or if it needs 2 instead of one. The old gasket is a different part number so we are assuming its been superceeded but hard to know for sure without a parts diagram. Quote
smwash02 Posted February 24, 2021 Report Posted February 24, 2021 On 2/24/2021 at 8:15 AM, Will.iam said: Thanks but we are findibg that continental is not as parts friendly in showing a diagram as Lycomings. The A&P is very familiar with lycomings but not so much with continental especially the TSIO 360mb engine. Even a fellow a&p googling a search could not find a diagram of the parts assembly and mccauley install instructions only have words no pictures and doesn’t list part numbers so no way to verify the gasket is the correct one or if it needs 2 instead of one. The old gasket is a different part number so we are assuming its been superceeded but hard to know for sure without a parts diagram. Expand Have you seen Continental's parts catalog? Here is their IPC and it's very good; however it does not list the governor since that's more up to the aircraft manufacturer. When I had mine overhauled the overhauler included the gasket. I'd suggest calling whomever overhauled your governor and asking them what to use. Quote
carusoam Posted February 26, 2021 Report Posted February 26, 2021 On 2/24/2021 at 8:15 AM, Will.iam said: Thanks but we are findibg that continental is not as parts friendly in showing a diagram as Lycomings. The A&P is very familiar with lycomings but not so much with continental especially the TSIO 360mb engine. Even a fellow a&p googling a search could not find a diagram of the parts assembly and mccauley install instructions only have words no pictures and doesn’t list part numbers so no way to verify the gasket is the correct one or if it needs 2 instead of one. The old gasket is a different part number so we are assuming its been superceeded but hard to know for sure without a parts diagram. Expand Seeing if the doc is familiar with this one... @M20Doc (details/pic for a Continental TSIO 360MB, Mccauley gov installation question... gasket question) Best regards, -a- Quote
Guest Posted February 26, 2021 Report Posted February 26, 2021 The AA9144 screened gasket and DC4 on both sides if you don’t have DC7. The prop shop I use sends a small vial of DC7 with each governor. Clarence Quote
Will.iam Posted February 26, 2021 Author Report Posted February 26, 2021 On 2/26/2021 at 6:09 AM, M20Doc said: The AA9144 screened gasket and DC4 on both sides if you don’t have DC7. The prop shop I use sends a small vial of DC7 with each governor. Clarence Expand Thanks doc. I’ll pass that on to him. How do you know AA9144 is the correct part number. I. E. Where is that documented? His point being how can an A&P tell the FAA that he installed the governor per blank blank manual when there isn’t one. Keeps the liability off the manufacturer and leaves the A&P open to fault since he can’t check the orientation, part number or how many parts are in the assembly. sad how litigation lawyers and people who look to blame anybody but themselves have really discouraged people helping out other people. Quote
Guest Posted February 26, 2021 Report Posted February 26, 2021 I looked through the manuals and also drew a blank. There are a few versions of paper gaskets used by both engine manufacturers, the one I quoted is a standard gasket but has a built in screen to protect the governor. Clarence Quote
skykrawler Posted June 27, 2022 Report Posted June 27, 2022 (edited) Bringing this topic back up. Currently in the process of having the 82'J A3B6D overhauled and attending to the details. When I removed the governor prior to sending the engine to the shop I found a single gasket. Examining carefully it seems likely to be two gaskets of the 72053 type that have since become as one. Disappointing to say the least. I see the LW-12347 'plate' available from Spruce for a whopping $90. This is the best explanation I have found as to WHY the stack-up thickness is important: https://vansairforce.net/community/showthread.php?p=1120922#post1120922 Has anyone laid hands on the 'existing spacer' depicted in the M20-120 service instruction who might describe it in terms of material and thickness? Edited June 27, 2022 by skykrawler Quote
EricJ Posted June 27, 2022 Report Posted June 27, 2022 On 6/27/2022 at 1:30 PM, skykrawler said: Bringing this topic back up. Currently in the process of having the 82'J A3B6D overhauled and attending to the details. When I removed the governor prior to sending the engine to the shop I found a single gasket. Examining carefully it seems likely to be two gaskets of the 72053 type that have since become as one. Disappointing to say the least. I see the LW-12347 'plate' available from Spruce for a whopping $90. This is the best explanation I have found as to WHY the stack-up thickness is important: https://vansairforce.net/community/showthread.php?p=1120922#post1120922 Has anyone laid hands on the 'existing spacer' depicted in the M20-120 service instruction who might describe it in terms of material and thickness? Expand My understanding of the "why" is that the drive on some governors is slightly long and may prevent the governor from fully seating, which leads to leaks. I've no idea whether that's completely correct, but this made sense to me. Here are my notes and a pic from when I did this a couple of years ago: Propeller governor gasket for Lyc IO-360-A3B6D, Lyc SI 1438A shows three-stack, two gaskets and a plate. The plate, Lyc pn LW 12347, is a piece of Al about 0.0385" thick, that can be cut using the gasket pn 72053 as a template. See pics from 06/14/2020. See also Mooney SI M20-120. Screened gasket is P/N MS914401 1 Quote
skykrawler Posted June 27, 2022 Report Posted June 27, 2022 Thanks, that's helpful. Your info confirms what I was seeing here: https://ww2.txtav.com/Parts/PartSearch/PartsDetail/LW12347. I'm going to get one cut with a water jet. Quote
Pinecone Posted June 27, 2022 Report Posted June 27, 2022 That is a weird thickness. Typically, al sheet comes in 0.032" and 0.040" Quote
EricJ Posted June 27, 2022 Report Posted June 27, 2022 On 6/27/2022 at 10:39 PM, Pinecone said: That is a weird thickness. Typically, al sheet comes in 0.032" and 0.040" Expand On mine and in every pic I've seen of one they look heavily brushed. I suspect it starts out as 0.040" and once somebody runs it over the brush wheel a couple times it's a little smaller. Quote
carusoam Posted June 28, 2022 Report Posted June 28, 2022 Altering the surface may be a method of keeping leaks from forming between the aluminum sheets. a long scratch would be enough to channel oil…. PP guesses only, not a mechanic… Best regards, -a- Quote
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