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04-28-2009, 10:10 AM
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Join Date: Jul 2007
Location: Santiago, Chile
Posts: 447
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Boss Mount Alternator Bolt Torque Help!!!
Hi Folks,
I bought a 60A planepower alternator for my RV-8. When I started the alternator installation I couldn't find torque value for bolts, plane power manual said to use torque value specify on engine manual. Unfortunately the manual and DVD that came with my new Lycoming YIO-360 doesn't have to much important information, I think I supoust to by a real mechanich maintanaince manual 
OK so please could help me with torque value so I will be able to finish my alternator intallation.
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04-28-2009, 10:16 AM
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Join Date: Jan 2006
Location: Belgium
Posts: 645
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Van's table?
Why don't you use the table from Van's in the manual?
Regards, Tonny.
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"Pilottonny"
Tonny Tromp
Lanaken, Belgium (EU)
RV9A, Registration: PH-VAN 
ECI-Titan IOX-320 with dual EI, turning a Whirlwind 200RV CS prop.
Sold
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04-28-2009, 10:23 AM
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Join Date: Mar 2007
Location: Corvallis Oregon.
Posts: 680
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Sitting here at the coffee shop I can't help you with the torque value. If no one else posts it I'll post it later after I've been to the shop. Sacremento Sky Ranch and several other sources sell Lycomming overhaul manuals pretty reasonably. Overhaul manuals come complete with a table of limits that pretty much outlines every measurment in your engine. It's a must have in your hanger tool kit.
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04-28-2009, 07:30 PM
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Join Date: Jul 2007
Location: Santiago, Chile
Posts: 447
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Quote:
Originally Posted by Rivethead
Sitting here at the coffee shop I can't help you with the torque value. If no one else posts it I'll post it later after I've been to the shop. Sacremento Sky Ranch and several other sources sell Lycomming overhaul manuals pretty reasonably. Overhaul manuals come complete with a table of limits that pretty much outlines every measurment in your engine. It's a must have in your hanger tool kit.
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You are right, I must buy an overhaul manual for my engine, problem is I am in Chile and is going to take some time to get it. Please send me the info that you have for those bolt so I continue working on my engine.
Cheers |
04-28-2009, 08:02 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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It's not specifically listed...
..in the Overhaul Manual, probably because the alternator is usually considered an airframe part, and not an engine part on certified planes.
The general Lycoming torque values should work for these bolts -
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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04-28-2009, 08:25 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
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The bracket mounting bolts are 5/16-18.
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Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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04-28-2009, 08:45 PM
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Join Date: Jul 2007
Location: Santiago, Chile
Posts: 447
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Great folks thanks |
10-14-2018, 05:20 PM
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Join Date: Apr 2006
Location: Murphy, NC
Posts: 532
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Stud Torque?
So is 25 in-lb min. the torque used for these bolts with the alternator bracket due to them going into the threaded engine case?
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John Johnson
Murphy, NC
RV7
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10-14-2018, 07:35 PM
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Join Date: Apr 2006
Location: Murphy, NC
Posts: 532
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OK, I see; 17 ft-lbs
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John Johnson
Murphy, NC
RV7
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10-14-2018, 09:09 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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Quote:
Originally Posted by Pilottonny
Why don't you use the table from Van's in the manual?
Regards, Tonny.
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This would be a better one since it covers the coarse thread Lycoming engine bolts rather than the fine thread airframe bolts of Vans numbers.
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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