indigoonlatigo(at)msn.com
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 Posted: Sat Nov 27, 2010 7:05 am Post subject: engine mount ears and attaching the Bendix Throttle body |
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Hi Bob,
I have all the manuals and I am still confused. The service table of limits says, "standard torque unless otherwise listed." That means all those other lised items in Section V have special requirements.
The beginning of section V lists, Studs. Although is uses the word studs, it doesn't say, Engine mount ear studs.
Looking at the parts manual, the nomenclature spells out these four bolts, sixteen total, eminating out of the case, which attach to the engine mount ears as, STUDS.
The service table of limits states Minimum driving torque in Inch/pounds with very low values. These low values would make no sense for these engine ear studs.
One would think that these studs holding the engine mount ears would be listed, as they would need to be very strong, handle vibration and heat. So I am assuming that they have the standard torque for a 3/8-16 bolt of 30 Ft/Lbs. But under section V, 3/8-16 studs are listed as 50 Inch/Lbs...this is a huge difference!!!
I am simply trying to be very thorough as I have broken bolts and screws with these long torque wrenches before and these studs are very important.
Thanks,
John
> Subject: Re: engine mount ears and attaching the Bendix Throttle body
| Quote: | From: bobturner(at)alum.rpi.edu
Date: Fri, 26 Nov 2010 22:01:03 -0800
To: rv10-list(at)matronics.com
--> RV10-List message posted by: "Bob Turner" <bobturner(at)alum.rpi.edu>
You need to get hold of the Lycoming manual. (search on line). Many of the torques recommended by Lycoming are higher than standard for AN. I don't know why. Maybe because they also use lock washers? Or the high vibration levels?
You got 2 gaskets so if you use Van's part to hold the cable ends, it goes between the throttle body and the engine, with one gasket on either side.
Bob
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=321117#321117
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